|
|
|
| Effects of soil and water conservation of the conversion of farmland to forest in Zigui County of the Three Gorges Reservoir Region |
| Wang Zhuna1,2,Wang Xiaoguang2,Shi Yuhu2,Pan Lei2,Yu Xuebiao1,Tang Zhangguo3 |
| 1.South China University of Tropic Agriculture,571737,Danzhou,Hainan;2.Hubei Academy of forestry,430079,Wuhan;3.State Hujiaping Forest Farm of in Laifeng County,445701,Enshi,Hubei: China |
|
|
|
|
Abstract To show the effect to implementation to the environment improvement,and promote the sustainable development of the project of conversion of farmland,taking the project of Zigui as an example,the effects of soil and water conservation of the project was analysed,based on the investigation in the field and observation on located experimental plots.The result showed: 1) the effect is visible to control soil erosion,the surface runoff of the forest land was reduced from 75.25%-85.21%,and the soil erosion reduced 85.4%-95.6% comparing with the farmland every year;2) the project reduced soil erosion 54 900 t per year,and reduced the amount of sediment of river 12 700 t,and the loss amount of soil organic matter,N,P,K decreased 652 t,32 t,82 t and 871 t respectively.
|
|
Received: 14 July 2006
|
|
|
|
|
|
|
