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Journal of Desert Research ›› 2026, Vol. 46 ›› Issue (3): 240-254.DOI: 10.7522/j.issn.1000-694X.2025.00264

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Spatial differentiation and governance mechanism of agricultural non-point source pollution in arid areas of Xinjiang

Zixiang Ma(), Weipeng Chao(), Ye Zhu   

  1. School of Economics and Management,Tarim University,Alar 843300,Xinjiang,China
  • Received:2025-07-06 Revised:2025-10-22 Online:2026-05-20 Published:2026-06-11
  • Contact: Weipeng Chao

Abstract:

In order to systematically analyze the spatial differentiation law and driving mechanism of agricultural non-point source pollution in Xinjiang, this study used the inventory analysis method and the equivalent pollution load intensity to calculate the average annual emissions and intensities of total nitrogen (TN), total phosphorus (TP), ammonia nitrogen and chemical oxygen demand (COD) from planting, livestock and poultry breeding, aquaculture and domestic sewage in 26 regions of Xinjiang from 2010 to 2021. Then, ArcGIS spatial cluster analysis was used to divide the pollution load intensity zone and pollution control zone. At the same time, the vegetation coverage and precipitation factors were combined to quantify the pollution sensitivity by the entropy weight method. The results showed that: (1) The peak emission of TN, TP and COD was concentrated in Yili, the peak of ammonia nitrogen occurred in Kashgar, and Karamay was the lowest value area of various pollutants. On the whole, the "Ili-Kashgar" belt showed a high-value distribution, while the economically developed areas in eastern and northern Xinjiang were low-value areas. (2) Cluster analysis shows that except for Baiyang City, all corps divisions are high-load areas; Urumqi, Kizilsu Kirgiz Autonomous Prefecture, and Baiyang City are medium-load areas; except for Urumqi and Kizilsu Kirgiz Autonomous Prefecture, all regions of the autonomous region are low-load areas; Urumqi is a composite highly sensitive area for domestic sewage and aquaculture; Kizilsu Kirgiz Autonomous Prefecture is a highly sensitive area dominated by livestock and poultry breeding; the sensitivity of planting in the corps area is the highest in the whole region. (3) In the single-factor driving force analysis, the industrial mode has the strongest driving effect on agricultural non-point source pollution in Xinjiang, and environmental sensitivity is the weakest, but the coupling of various factors in industrial mode-administrative division-environmental sensitivity has a synergistic enhancement effect on the spatial differentiation of non-point source pollution in Xinjiang.

Key words: Xinjiang, agricultural non-point source pollution, inventory analysis, equivalent pollution load intensity

CLC Number: