Study on the Model of Agroforestry System in Erosion Gully of Loess Based on Microtopography
The soil and water loss problem is concerned by people in erosion gully of loess.Based on the principle of water storage and agroforestry system combined with complex system theory,this paper used the microtopography analysis method,which focused on two typical erosion gully of loess in Sanyanjing watershed,Shouyang county,Shanxi province,to explore the mode of agroforestry system which was close to nature.The results showed that the water storage and water conservation was the key to the control of erosion gully of loess.The process of water behavior followed the law of recharge-discharge sequence.The method that using superposition of high resolution images of large scale topographic map for microtopography analysis could accurately identify the flat place-scarp and field surface-anatomized,and could rationally allocate plant materials.The model of agroforestry system,which was formed by applying the method of microtopography analysis,was consistent with the natural water storage law of erosion gully of loess,and could play the water storage function of erosion gully of loess normally.The agroforestry system model with water storages as core is an effective way to fundamentally control the erosion gully of loess,to achieve the goal of ecological construction of the natural-economic-social complex.
erosion gully of loessagroforestry systemwater storagemicrotopographyplant arrangement
NETL
NSTL
万方数据
维普
