Ecosystem Reconstruction Model of Degraded Grasslands in Mixed Cropland——Grassland Zone in Northern Shaanxi Province

Based on the qualitative description of the driving factors for grassland degradation in the mixed cropland—grassland region in Northern Shaanxi Province,we chose the dominant factors that were closely correlated to the grassland degeneration and also relatively easy to acquire,and obtained the most dominant factors affecting the grassland degradation using a principal component analysis and multiple linear regression analysis.Furthermore,for those selected factors,we proposed the prevention measures to control the degeneration of grassland in Northern Shaanxi Province.In addition,we suggested some concrete counter measures based on the moisture conditions and the severity of grassland degradation.Finally,we proposed a model of reconstructing the degradated ecosystem in Northern Shaanxi Province.