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Arid Land Geography ›› 2023, Vol. 46 ›› Issue (6): 982-992.doi: 10.12118/j.issn.1000-6060.2022.474

• Land Use and Agricultural Development • Previous Articles     Next Articles

Spatial and temporal matching characteristics of agricultural land and water resources in the Shule River Basin

YANG Jing1(),ZHOU Dongmei1,MA Jing1,ZHU Xiaoyan1,JIN Yinli1,ZHOU Fan2,ZHANG Jun1,3()   

  1. 1. College of Resources and Environment, Gansu Agricultural University, Lanzhou 730070, Gansu, China
    2. College of Management, Gansu Agricultural University, Lanzhou 730070, Gansu, China
    3. Research Center for Water-saving Agriculture in Gansu Province, Lanzhou 730070, Gansu, China
  • Received:2022-09-20 Revised:2022-11-28 Online:2023-06-25 Published:2023-07-24

Abstract:

As important resources for agricultural production, the effective spatial allocation of land and water resources is conducive to the full utilization of resources and sustainable regional development. In this study, we selected the Shule River Basin, northwest China as the research object. On the basis of the water footprint theory to account for the changes in the water footprint of agricultural production in the Shule River Basin, the Gini coefficient and the spatial mismatch model were used to quantitatively assess the dynamic trends of the spatial and temporal matching of agricultural land and water resources in the study area during 2000—2020 and their sensitivity. Our results showed the following: (1) The agricultural water footprint and crop planting area in the Shule River Basin showed a decreasing trend during 2000—2020. The peak of crop production water footprint appeared in 2007 and 2018, and the peak of crop planting area appeared in 2009 and 2018. The annual contribution rate of blue water footprint is 90.9%, which is complementary to green water footprint, indicating that blue water is the main source of agricultural water in the Shule River Basin. (2) The spatial matching degree of agricultural water and soil resources is gradually improved, and it is generally in a better matching state. The spatial mismatch between blue and green water footprint and crop planting area was gradually improved, and the spatial distribution showed the characteristics of high in the middle and low in the periphery. (3) The number of areas with moderate or high sensitivity to crop production footprint was increasing.

Key words: water footprint, land and water matching, sensitivity analysis, Shule River Basin