Study on the adaptive scale of agricultural development and utilization in Mu Us Sandy Land based on NSGA-II

Abstract

The balance of water and soil resources directly influences the ecological environment and the potential of social and economic development in water shortage areas. Especially in the Mu Us Sandy Land, where was suffering extreme lack of water, when all kinds of agricultural development and utilization mode had caused obvious pressure on local water resources, if the mode and the existing agricultural planting structure were still continuing, disorderly expanding the developing scale, will undoubtedly made more serious ecological problems. In this study, taking Yulin District in the southern margin of Mu Us Sandy Land as the research object, the multi-objective optimization model of adaptive scale of development and utilization of the sandy land agriculture was established with the constraints of limited water resources and goals of economic, social, ecological benefits. Based on the NSGA-II algorithm, typical schemes including unitary planting structure, binary planting structure and three-component planting structure were proposed. After summing up and analyzing, seven different schemes including diversified agricultural planting pattern were recommended, also the planting areas of diverse crops were given. The final optimized schemes could provide references for the development, harnessing and utilization of sandy land, and improve the local ecological environment, expanding the effective cultivated land area of Yuyang District and promoting the coordinated development of regional water and soil resources.