| In this study, the effect of vegetation restoration on soil aggregate, soil micro- aggregate, soil permeability has been studied in Chang ting county, Fujian province. Planted in 1980 and 2000 on severely eroded land after restoration were involved in this study. The objective of this study is that: clarified the role of improving the soil structure and soil anti-scourbility and soil antierodibility by vegetation restoration. The results showed that:After restoration restorated in granite erosion area, compared with bare CK-â…¡, the content of soil aggregates,micro-aggregate and soil stability were significantly increased. The mean weight diameter(MWD) and aggregate ratio increased, destruction of soil aggregates and dispersion rate reduced, but this physical indexes of soil had still gaps compared with the CK-â… .Vegetation restoration measures in 2000, prohibit measure has a significant effect in improving the content and stability of soil aggregates, sowing Bahia grass less, lespedeza formosa measure was the worst. Vegetation restoration measures in the 1980s, the content and stability of soil aggregates of black wattle measures significant increased, the mixed vegetation of arbors and shrubs was modest, but sowing grass measures was worst.Compared with bare CK-â…¡, the soil infiltration rate, steady infiltration rate, average infiltration permeability and total infiltration increased significantly, and the permeability of black wattle measure exceed CK-â… ,but other measures had not reached the level of CK-â… .Vegetation restoration measures in 2000, the soil permeability of prohibit measure was the best, sowing Bahia grass less, and the soil permeability of lespedeza formosa measure improved insignificant. Vegetation restoration measures in the 1980s, the soil permeability of increased very significant in black thorns measure, the mixed vegetation of arbors and shrubs was modest, but sowing grass measures was worst.
|
PDF Full Text Request