Abstract:

Current studies mostly emphasize the matching of soil and water resources and its impact on resource development, while less attentions are paid to the effectiveness of water and the influence of soil nutrients on ecological processes. This paper firstly proposes the research framework of “pattern—effect—land use optimization” of soil and water interactions. The uncertainty and risks of land use allocation are evaluated on the basis of the complex interaction of water, soil and other environmental factors, and the constraints of economic, social and ecological factors. Considering the constraint factors such as soil, slope, soil water and temperature, and coordinating the trade-off relationship of ecosystem services, we optimized the land use pattern in the vertical mountain vegetation, and put forward the way to enhance the utilization of water and soil resources and improve ecosystem services. All these studies contribute to scientific bases for ecosystem services enhancement and ecological function conservation under the changing environment. Then, the priority research directions are suggested on the ecological and environmental effects of soil and water interaction, and the optimal allocation of land use.

Key words: soil and water interaction, land use optimization, trade-off of ecosystem service, research framework of soil and water interaction