Key Scientific Questions of Grassland Protection,Restoration and Function Improvement
Grassland accounts for 27.6％of China's land area and plays an important role in maintaining ecological security of China.This paper summarized the development of China from a single pursuit of material production function of grassland resources,to the production and ecological balance,and to the current ecological priority and multi-functional goal management,analyzed the changes in the emphasis of the current status of grassland protection and restoration policy in China,and its role in curbing grassland degradation,and analyzed the constraints such as the germplasm resource of native grasses,soil nutrients and soil microorganisms during the process of China's grassland restoration,and then introduced the concept of close-to-nature restoration of grassland by relying on the natural processes to restore the degraded grassland to an ecosystem whose biodiversity and stability is close to that of the regional community;and the key scientific issues that need to be addressed in future protection and restoration of grasslands in China were condensed.It is suggested that under the guarantee of grassland protection and restoration policy in the new era,respecting and complying with nature,and practicing the concept of close-to-nature restoration will lead the grassland protection and restoration from vegetation to ecosystem in the future.
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维普
