agriculture,water and land resources,carrying capacity,fuzzy comprehensive evaluation model,Kazakhstan

  ,"/> Evaluation on Carrying Capacity of Agricultural Water and Land Resources and Identification of Affecting Factors in Kazakhstan

Arid Zone Research ›› 2020, Vol. 37 ›› Issue (1): 254-263.

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Evaluation on Carrying Capacity of Agricultural Water and Land Resources and Identification of Affecting Factors in Kazakhstan

ZHU Wei1, 2, 3, ZHOU Hong-fei1, 2, LI Lan-hai1, 4, YAN Ying-jie1, 2, 3   

  1. 1. State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,Xinjiang,China;
    2. Fukang Station of Desert Ecology,Chinese Academy of Sciences,Fukang 831505,Xinjiang,China;
    3. University of Chinese Academy of Sciences,Beijing 100049,China;
    4. Ili Station for Watershed Ecosystem Research,Chinese Academy of Sciences,Xinyuan 835800,Xinjiang, China

  • Received:2019-06-06 Revised:2019-10-08 Online:2020-01-15 Published:2020-01-14

Abstract:  The quantity and quality of water and land resources are of great significance to the sustainable development of agriculture. The 22 indicators were used to establish the evaluation system of the carrying capacity of agricultural water and land resources in Kazakhstan. The analytic hierarchy process, entropy weight method and fuzzy comprehensive evaluation model were combined to analyze the dynamic change and regional difference of the carrying capacity of agricultural water and land resources in Kazakhstan from 2001 to 2017. The obstacle method was used to quantitatively identify the influencing factors. The results showed that:  = 1 \* GB3 From 2001 to 2017, the overall carrying capacity of agricultural water and land resources in Kazakhstan showed a slow upward trend, and the evaluation indexes of the water and land resources subsystem and the economic subsystem were all increased slowly, but those of the ecology subsystem and social subsystem were significantly decreased;  = 2 \* GB3 The carrying capacity of agricultural water and land resources was significantly different from different regions. The areas with high carrying capacity were mainly distributed in the northern, central and eastern regions, and those with low one were in the southern and western regions. The carrying capacity in North Kazakhstan, Costanay and Akmola was increased year by year, but that in Atyrau and Baplodar was low and decreased; = 3 \* GB3 The carrying capacity was mainly affected by the reclamation rate (C2), agricultural output value per unit area of cultivated land (C16) and agricultural irrigation rate (C4) during 2001-2009, but it was mainly affected by the agricultural water and land resources matching coefficient (C1), population density (C10) and land sewage load per unit area (C20) during 2010-2017. The factors related to the eco-environment have gradually became as the barriers to the carrying capacity.

Key words:  agriculture')">

 agriculture, water and land resources, carrying capacity, fuzzy comprehensive evaluation model,   ')">Kazakhstan