Arid Zone Research ›› 2021, Vol. 38 ›› Issue (4): 1140-1151.doi: 10.13866/j.azr.2021.04.26

• Ecology and Environment • Previous Articles     Next Articles

Optimization of land use structure based on ecosystem service value in the mainstream of Tarim river

LIN Jing1(),ZHAO Chengyi1(),MA Xiaofei2,SHI Fengzhi2,WU Shixin2,ZHU Jian3   

  1. 1. Land Science Research Center, Nanjing University of Information Sciences and Technology, Nanjing 210044, Jiangsu, China
    2. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China
    3. Tarim River Basin Authority, Korla 841000, Xinjiang, China
  • Received:2021-01-19 Revised:2021-03-09 Online:2021-07-15 Published:2021-08-03
  • Contact: Chengyi ZHAO E-mail:LinjingX0228@163.com;zhaocy@nuist.edu.cn

Abstract:

In this study, the effect mechanism of land use and land cover change (LUCC) on ecosystem service value (ESV) in a complex environment was analyzed, and the land use structure was optimized based on ESV. The results showed that after the implementation of ecological water conveyance (EWC), the average annual variation rates of cultivated land, woodland, grassland, desert, water area in the mainstream of the Tarim River were 7.26%, 2.68%, -1.90%, 1.22% and 0.08%, respectively. The increase of cultivated land and woodland areas were mainly caused by grasslands, and the inflow of EWC increased the water areas. An increasing-decreasing-recovering tendency of time series in ESV with 299 million yuan in the lower reaches of the Tarim River was observed, and showed a decrease over all of the mainstream of Tarim River with 3.96 billion yuan. The water resources were of great significance to the stabilization and improvement of ESV in arid areas. Based on past analysis, the water area had the dominant influence on ESV, with the direct and indirect effects of 0.610 and 0.345, respectively. Based on the relationship between the different land use types, the optimal structure was calculated for the proportion of cultivated land, woodland, grassland, desert and wetland, which were 3.34%, 10.03%, 38.22%, 45.95%, and 0.96%, respectively. In this circumstance, the ESV can reach a maximum of 53.369 billion yuan. With the expansion of cultivated land areas, the contradiction between agricultural water consumption and ecological water utilization becomes more and more serious. It is of great significance to balance the characteristics of land use structure and water consumption for the maintenance of ESV and the rational allocation of water resources, which can provide a basis for exploring the optimal state of man-land relationships in the Tarim River Basin.

Key words: Land use change, ecosystem service value, optimization of land structure, mainstream of Tarim River