LE ROLE DES SOLS

photo-mission-pout-087Le sol est le support de toute l’activité économique et le premier facteur de production dans une économie essentiellement agricole.

Partie superficielle de l’écorce terrestre il est la résultante de l’altération des roches sous l’action des interactions atmosphériques, de l’activité biologique et microbienne. Le sol est une interface entre biosphère et lithosphère. La partie du sol spécialement riche en matière organique se nomme l’humus. On différencie le sol de la croûte terrestre par la présence significative de vie. Le sol est aussi un des puits de carbone planétaires, mais semble perdre une partie de son carbone, de manière accélérée depuis au moins 20 ans.

Habitat des végétaux, animaux et de l’homme, le sol joue un rôle de régulateur. Il assure également les fonctions de filtre, de réservoir d’eau et d’éléments nutritifs.
Le sol est un conservateur culturel et historique. Il peut contenir et conserver des fossiles, vestiges historiques, et les traces d’anciennes activités humaines ou d’évènements géoclimatique.

Avec l’Agriculture au cœur de son intervention, l’Institut National de Pédologie intègre toutes ses fonctions du sol dans ses missions et programmes.

60 commentaires

  1. billigare alternativ till billigt, http://sverige-apotek.life/doxakne.html , köpa i USA pris.

  2. Congrats to the Winners! This is not a good candidate for a do-it-yourself
    project even though it is possible to buy air conditioners
    wholesale.

  3. I not to mention my buddies were found to be going through the good recommendations located on your web site and quickly got an awful feeling I had not expressed respect to the web blog owner for those strategies. Those young boys are already so stimulated to study them and have in effect absolutely been making the most of these things. Thanks for simply being indeed helpful and then for selecting this form of brilliant ideas most people are really desperate to understand about. My personal sincere regret for not saying thanks to you sooner.

  4. I am only commenting to let you be aware of of the outstanding experience my daughter had checking your site. She realized a lot of details, with the inclusion of how it is like to have an incredible helping style to let other individuals without hassle understand a variety of impossible things. You actually exceeded her expected results. Thanks for giving such beneficial, trustworthy, educational and in addition easy tips on the topic to Kate.

  5. very good post, i actually love this web site, carry on it

  6. I simply desired to say thanks yet again. I do not know the things I could possibly have done in the absence of those tips documented by you on this topic. This has been the frightening dilemma in my opinion, nevertheless understanding the professional form you processed it took me to leap for fulfillment. Now i’m happy for this guidance and thus trust you recognize what a great job you were putting in training men and women via your site. More than likely you’ve never encountered all of us.

  7. Thanks for your entire effort on this website. My daughter really loves managing research and it’s easy to understand why. My spouse and i learn all of the lively tactic you create functional tips and hints through your web site and therefore strongly encourage participation from the others about this article and our favorite girl has always been learning a great deal. Have fun with the rest of the new year. You are always carrying out a very good job.

  8. Oh my goodness! a tremendous article dude. Thanks However I am experiencing difficulty with ur rss . Don抰 know why Unable to subscribe to it. Is there anybody getting equivalent rss drawback? Anyone who is aware of kindly respond. Thnkx

  9. I have to express some appreciation to you for bailing me out of this type of predicament. Right after researching throughout the the web and coming across tricks which are not helpful, I believed my entire life was gone. Existing without the presence of solutions to the difficulties you have solved all through the site is a crucial case, and the kind which could have in a negative way affected my entire career if I hadn’t come across your blog post. Your main expertise and kindness in taking care of the whole lot was precious. I don’t know what I would have done if I had not come upon such a solution like this. I can at this point relish my future. Thanks for your time so much for this high quality and effective help. I will not hesitate to suggest the blog to anyone who needs and wants direction about this area.

  10. Hi! This post couldn’t be written any better! Reading this post reminds me
    of my previous room mate! He always kept chatting about this.
    I will forward this post to him. Pretty sure he will have a good
    read. Many thanks for sharing!

  11. My husband and i got very thankful Chris could carry out his investigation from your ideas he obtained in your weblog. It is now and again perplexing to just be making a gift of points which many people might have been trying to sell. And we also know we have got the blog owner to give thanks to because of that. The type of illustrations you have made, the simple site menu, the relationships your site assist to instill – it is mostly unbelievable, and it is facilitating our son in addition to our family consider that this article is exciting, and that’s very important. Many thanks for the whole lot!

  12. Hi there to all, how is all, I think every one
    is getting more from this site, and your views are fastidious in favor
    of new people.

  13. I’m just writing to make you know what a useful encounter our child undergone viewing your web page. She figured out many details, most notably how it is like to possess a very effective helping nature to have certain people really easily have an understanding of specific multifaceted topics. You really exceeded visitors’ expectations. I appreciate you for presenting those necessary, dependable, edifying and also easy guidance on this topic to Jane.

  14. I wanted to write a note to thank you for some of the amazing guides you are placing on this site. My rather long internet look up has finally been paid with awesome points to exchange with my visitors. I ‘d suppose that many of us site visitors are truly blessed to exist in a notable place with many wonderful professionals with great tips. I feel pretty blessed to have discovered your weblog and look forward to many more fun minutes reading here. Thank you once again for a lot of things.

  15. Thanks so much for giving everyone an extremely wonderful chance to discover important secrets from this site. It really is so nice plus jam-packed with a good time for me and my office acquaintances to search the blog a minimum of 3 times per week to study the fresh issues you will have. And definitely, I’m also usually fulfilled for the awesome things you give. Some two facts in this article are definitely the most suitable we have all ever had.

  16. My wife and i have been absolutely thankful that Chris could do his researching through the precious recommendations he obtained when using the blog. It is now and again perplexing to simply possibly be offering information and facts which often the rest could have been making money from. We see we need the website owner to thank for this. All of the explanations you have made, the straightforward blog navigation, the friendships your site make it possible to engender – it is many overwhelming, and it’s letting our son and our family recognize that this subject matter is brilliant, and that’s very vital. Thank you for all the pieces!

  17. I have to point out my gratitude for your kind-heartedness in support of those who require help on that field. Your special commitment to getting the solution along turned out to be rather insightful and has always enabled most people just like me to attain their desired goals. Your amazing insightful guide denotes a whole lot to me and even more to my office colleagues. Many thanks; from everyone of us.

  18. I truly wanted to construct a small remark to express gratitude to you for some of the magnificent solutions you are showing on this website. My extensive internet search has at the end of the day been compensated with reasonable know-how to go over with my pals. I would assume that most of us readers actually are very lucky to dwell in a great community with very many outstanding professionals with helpful suggestions. I feel very much lucky to have encountered your weblog and look forward to plenty of more cool times reading here. Thanks once more for a lot of things.

  19. Needed to draft you this very little observation to help say thank you yet again with the stunning guidelines you have provided on this site. It was quite generous of people like you to deliver freely just what a lot of folks could possibly have distributed for an ebook to help with making some dough for themselves, particularly now that you might have tried it in case you wanted. The advice additionally served to provide a easy way to fully grasp that other individuals have a similar dream just like my own to find out significantly more with regards to this matter. I think there are some more pleasant occasions ahead for individuals that look into your site.

  20. I enjoy you because of your whole hard work on this site. My daughter delights in participating in investigations and it’s obvious why. A lot of people hear all of the dynamic form you render invaluable guides via your blog and even increase contribution from the others on that area of interest while our own child is now studying a great deal. Have fun with the remaining portion of the new year. You have been performing a first class job.

  21. I want to express my appreciation for your kindness supporting people that require assistance with in this study. Your special dedication to getting the message up and down came to be wonderfully effective and have continuously empowered employees much like me to realize their targets. Your entire invaluable information implies much to me and even more to my peers. Thanks a ton; from everyone of us.

  22. I’m just commenting to make you know of the impressive discovery my friend’s princess enjoyed reading through yuor web blog. She discovered a wide variety of things, with the inclusion of how it is like to have a wonderful teaching character to have many others without difficulty fully understand specific impossible topics. You truly did more than people’s desires. Many thanks for presenting the good, trusted, informative not to mention fun guidance on that topic to Julie.

  23. I and also my guys were found to be checking out the excellent points from your web blog and suddenly came up with a horrible feeling I had not thanked the web blog owner for those strategies. These young boys came so thrilled to read all of them and have clearly been making the most of them. We appreciate you simply being well thoughtful and also for picking out this kind of high-quality subject matter millions of individuals are really needing to understand about. Our own sincere regret for not expressing gratitude to you sooner.

  24. Thank you so much for providing individuals with an exceptionally special opportunity to check tips from this blog. It is always so fantastic and stuffed with a lot of fun for me personally and my office co-workers to search your blog at the very least thrice in a week to study the newest guides you have. And indeed, I’m also actually fulfilled with all the fantastic creative ideas you give. Certain two points in this post are in truth the most impressive we’ve ever had.

  25. Excellent goods from you, man. I’ve understand your stuff previous to and you are just extremely
    magnificent. I actually like what you have acquired here, certainly like what you are saying and the way in which you say it.

    You make it entertaining and you still take care of to keep it smart.
    I can’t wait to read far more from you. This is really a wonderful web site.

  26. I simply wanted to thank you so much yet again. I’m not certain what I could possibly have accomplished without the entire concepts discussed by you regarding my question. Entirely was a challenging crisis in my view, but encountering the professional technique you resolved the issue made me to weep over contentment. Now i’m happier for this advice and hope that you are aware of an amazing job you are always undertaking training many people thru your blog. I am sure you haven’t got to know all of us.

  27. I am glad for writing to let you understand what a wonderful discovery my daughter developed studying your site. She discovered a wide variety of things, with the inclusion of what it’s like to have an amazing giving character to have the mediocre ones with no trouble fully grasp several complicated issues. You really did more than her expectations. I appreciate you for delivering the precious, trustworthy, revealing and even cool thoughts on your topic to Sandra.

  28. I want to get across my passion for your generosity supporting those people that should have guidance on the issue. Your real commitment to getting the solution all over had been exceedingly insightful and has all the time enabled most people just like me to attain their goals. Your new invaluable help and advice indicates a whole lot to me and even further to my colleagues. With thanks; from everyone of us.

  29. I wish to show my thanks to this writer just for rescuing me from this particular instance. Just after looking throughout the search engines and getting views which are not pleasant, I figured my life was over. Being alive without the strategies to the problems you have solved through the blog post is a serious case, as well as ones that could have in a negative way damaged my entire career if I hadn’t come across your web site. The natural talent and kindness in handling the whole lot was invaluable. I am not sure what I would’ve done if I had not come across such a solution like this. I’m able to now look forward to my future. Thanks very much for this specialized and results-oriented help. I won’t think twice to suggest your web blog to any person who would need guide on this subject matter.

  30. I in addition to my pals have already been reading through the great items from the blog while suddenly I got a horrible feeling I had not thanked the blog owner for them. Most of the guys appeared to be certainly glad to read through them and already have unquestionably been taking advantage of those things. Appreciate your genuinely simply accommodating and then for using this kind of ideal subject areas millions of individuals are really desirous to be aware of. My personal honest apologies for not expressing appreciation to you earlier.

  31. I precisely wished to thank you so much all over again. I do not know the things that I would have undertaken in the absence of these advice discussed by you on that question. It actually was a real difficult situation for me, but spending time with a new professional technique you resolved the issue took me to jump for fulfillment. I am just happier for this service and even believe you find out what a powerful job that you are undertaking educating most people via your web site. I am certain you haven’t got to know any of us.

  32. I am just commenting to make you know what a brilliant experience my wife’s daughter encountered using your web page. She even learned a wide variety of pieces, which included what it is like to possess a very effective teaching mindset to have others with ease know a variety of tortuous things. You actually exceeded people’s desires. Many thanks for rendering such invaluable, safe, informative and fun guidance on this topic to Jane.

  33. I enjoy you because of all of your effort on this web site. Kate really likes managing research and it’s really easy to see why. A number of us hear all about the compelling form you render very useful tips and tricks via your web site and even inspire response from some other people on that content and my princess is really discovering a lot. Take advantage of the rest of the new year. You’re the one carrying out a fantastic job.

  34. Thanks for all your effort on this blog. Kate loves working on internet research and it is easy to see why. Most people learn all relating to the dynamic manner you create simple thoughts by means of your blog and even recommend contribution from people on this area of interest then our simple princess has been studying a lot. Enjoy the rest of the new year. Your doing a stunning job.

  35. Thanks for your own efforts on this blog. Betty really loves engaging in internet research and it is easy to understand why. My partner and i know all about the dynamic medium you produce both useful and interesting guidelines by means of this website and as well inspire participation from some others on this concept and my girl is certainly discovering a lot. Enjoy the remaining portion of the year. Your doing a really good job.

  36. I must express thanks to this writer for rescuing me from this type of predicament. Just after scouting through the online world and getting methods that were not helpful, I assumed my life was well over. Existing minus the approaches to the issues you have solved all through your entire write-up is a crucial case, as well as those that might have badly affected my entire career if I hadn’t come across your web page. Your own expertise and kindness in controlling almost everything was very useful. I am not sure what I would’ve done if I had not come across such a subject like this. I am able to now relish my future. Thanks a lot so much for your high quality and effective help. I won’t be reluctant to propose your web page to anyone who would need recommendations about this matter.

  37. I precisely needed to appreciate you again. I do not know the things I could possibly have accomplished in the absence of the actual methods documented by you about my problem. It has been an absolute hard concern for me personally, however , noticing the very skilled style you processed the issue made me to cry for contentment. Now i’m grateful for this help as well as wish you recognize what a powerful job that you’re doing training people using your web page. Most likely you haven’t come across all of us.

  38. I enjoy you because of all your valuable effort on this website. Gloria really likes engaging in investigations and it’s easy to understand why. We learn all of the lively tactic you offer important solutions on the web blog and even increase contribution from other ones on that situation and our simple princess is actually starting to learn a lot. Take pleasure in the rest of the year. You have been performing a pretty cool job.

  39. I would like to show my passion for your generosity supporting those individuals that really need help with this concept. Your real commitment to getting the message all around ended up being wonderfully practical and has in every case helped guys and women just like me to reach their ambitions. Your personal warm and friendly information indicates a whole lot a person like me and even further to my fellow workers. Many thanks; from everyone of us.

  40. I must show my thanks to the writer just for rescuing me from such a matter. Because of browsing throughout the world-wide-web and meeting tricks that were not pleasant, I believed my life was done. Existing devoid of the approaches to the difficulties you have fixed by means of your main article is a critical case, as well as those which could have negatively damaged my entire career if I hadn’t discovered the website. Your personal ability and kindness in taking care of every item was vital. I am not sure what I would have done if I had not encountered such a subject like this. I’m able to now look forward to my future. Thank you so much for your high quality and amazing guide. I will not think twice to recommend your web blog to any individual who needs and wants care about this issue.

  41. I in addition to my friends happened to be digesting the excellent thoughts on your website then all of the sudden I had a terrible feeling I never expressed respect to you for those tips. All the young boys had been consequently happy to see them and have now surely been taking advantage of these things. Thank you for turning out to be very helpful and also for settling on certain ideal topics millions of individuals are really desirous to be informed on. My personal sincere apologies for not expressing gratitude to sooner.

  42. I really wanted to send a small remark to appreciate you for all the magnificent information you are showing on this website. My incredibly long internet research has at the end of the day been compensated with high-quality ideas to go over with my two friends. I ‘d express that many of us readers actually are really blessed to dwell in a superb network with many wonderful individuals with interesting hints. I feel very much grateful to have discovered your site and look forward to really more excellent times reading here. Thanks a lot once more for everything.

  43. I definitely wanted to construct a brief comment to be able to say thanks to you for some of the splendid tricks you are giving on this site. My incredibly long internet investigation has finally been compensated with useful content to go over with my close friends. I would state that that we website visitors are definitely endowed to dwell in a fine place with so many wonderful professionals with great tips and hints. I feel rather privileged to have come across your entire site and look forward to many more enjoyable moments reading here. Thanks a lot once more for everything.

  44. My husband and i got quite happy when Albert managed to conclude his homework via the precious recommendations he acquired in your web page. It is now and again perplexing to just choose to be freely giving hints which the others have been making money from. Therefore we know we need you to appreciate for that. Most of the explanations you made, the simple blog menu, the relationships you make it possible to foster – it is most remarkable, and it’s really helping our son and us understand that issue is exciting, and that’s truly vital. Thanks for the whole thing!

  45. I enjoy you because of all your work on this blog. Kim really likes carrying out investigations and it’s really obvious why. Most people learn all regarding the lively ways you present rewarding information through the blog and in addition improve response from some others on the point then my daughter is without a doubt becoming educated a lot. Take pleasure in the remaining portion of the year. You’re carrying out a great job.

  46. An attention-grabbing dialogue is price comment. I believe that you must write more on this topic, it won’t be a taboo subject but generally persons are not enough to speak on such topics. To the next. Cheers

  47. I discovered your blog website on google and verify a number of of your early posts. Continue to maintain up the very good operate. I just further up your RSS feed to my MSN Information Reader. Seeking ahead to reading more from you later on!?

  48. There are some fascinating points in time in this article however I don抰 know if I see all of them heart to heart. There’s some validity but I will take maintain opinion until I look into it further. Good article , thanks and we would like extra! Added to FeedBurner as effectively

  49. My wife and i ended up being now glad Louis could round up his studies out of the ideas he obtained while using the web site. It’s not at all simplistic just to choose to be giving freely secrets the rest could have been trying to sell. And we also take into account we have got the blog owner to thank for that. Most of the explanations you have made, the straightforward blog menu, the relationships you will make it possible to foster – it is everything overwhelming, and it is assisting our son in addition to our family do think the issue is amusing, and that is extremely pressing. Thank you for all!

  50. I抦 impressed, I need to say. Actually not often do I encounter a weblog that抯 each educative and entertaining, and let me tell you, you could have hit the nail on the head. Your idea is outstanding; the problem is something that not enough individuals are speaking intelligently about. I’m very blissful that I stumbled throughout this in my search for something referring to this.

  51. Spot on with this write-up, I truly think this website wants way more consideration. I抣l most likely be once more to learn far more, thanks for that info.

  52. There are some attention-grabbing points in time in this article however I don抰 know if I see all of them middle to heart. There’s some validity however I will take hold opinion until I look into it further. Good article , thanks and we would like extra! Added to FeedBurner as effectively

  53. I together with my friends came looking at the excellent tips and tricks located on your web site then all of a sudden got an awful suspicion I never thanked the web blog owner for them. The boys ended up as a consequence passionate to study them and have in effect undoubtedly been taking advantage of these things. Appreciation for indeed being considerably considerate and for considering these kinds of outstanding areas most people are really desirous to know about. Our sincere regret for not expressing gratitude to you earlier.

  54. Can I just say what a relief to seek out someone who truly is aware of what theyre speaking about on the internet. You definitely know methods to convey an issue to gentle and make it important. More folks have to learn this and perceive this facet of the story. I cant consider youre not more well-liked because you definitely have the gift.

  55. I am just starting to learn about all of this. Thanks!

  56. It is best to participate in a contest for the most effective blogs on the web. I’ll advocate this site!

  57. I’m not sure why but this blog is loading very slow for me. Is anyone else having this issue or is it a issue on my end? I’ll check back later on and see if the problem still exists.

  58. I抦 impressed, I must say. Really rarely do I encounter a blog that抯 each educative and entertaining, and let me inform you, you may have hit the nail on the head. Your thought is outstanding; the problem is something that not sufficient people are speaking intelligently about. I’m very completely happy that I stumbled across this in my search for one thing relating to this.

  59. I not to mention my guys were found to be reading the nice tips and hints located on the blog and so instantly I got an awful suspicion I had not expressed respect to the blog owner for those tips. All of the boys had been certainly joyful to see all of them and have without a doubt been tapping into them. Appreciate your indeed being very accommodating and then for using such great subject areas millions of individuals are really desirous to discover. My personal sincere regret for not expressing appreciation to you earlier.

  60. It抯 hard to seek out knowledgeable folks on this subject, but you sound like you recognize what you抮e talking about! Thanks

Laisser un commentaire

Votre adresse de messagerie ne sera pas publiée.