数字农科院2.0

Evaluation of carrying capacity of agricultural water and soil resources and targeted regional management in Northwest China

文献类型： 外文期刊

作者： Yun Gao;Dawei Ding;Youming Zhang;Ping Li;Kaiyang Li;Tianhao Ruan;Yang Han;Chunya Ma

作者机构：

关键词： Agricultural water and soil resource carrying capacity;Degree of coupling coordination;Green water measurement;Northwest China;Pressure index (PIGY and PIES);Spatial differentiation of barrier factors

期刊名称： Journal of Environmental Management

ISSN： 0301-4797

年卷期： 2025 年 395 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Traditional agricultural water and soil resource carrying capacity evaluation models exhibit systematic biases because they neglect grain yield pressure and agricultural output scale sustainability pressures. In this study, the yield pressure index (PIGY) and output pressure index (PIES) are innovatively incorporated as correction factors to construct an integrated carrying capacity (CC) model for the agricultural resources of Northwest China. A green water measurement framework is introduced to optimize agricultural water assessment, with a system coordination degree (CCD) to determine system coordination and an entropy-weighted barrier model to analyze spatially differentiated barriers. The results demonstrate the following: (1) Model validity: The CC model shows deviations of −4.5 %–8.4 % compared with traditional methods (WL), accurately identifying overloaded types such as low-efficiency yield overloads in Gansu (PIGY > 1.95) and insufficient output development in Qinghai (eg. 2020 PIES = 3.14). (2) System coordination evolution: The CCD in the five provinces shows gradient differentiation (Shaanxi 0.70–0.83、Xinjiang 0.62–0.78 > Gansu 0.55–0.64, Qinghai 0.58–0.67, Ningxia 0.58–0.71) with divergent interprovincial trends. (3) Barrier mechanisms: Four dominant mechanisms are revealed: labor-reclamation rate negative feedback (Gansu–Ningxia–Shaanxi, labor force per unit area and reclamation rate r = −0.80), dual water resource pressures (Gansu), ecological water diversion for soil management (Xinjiang), and industrial overdependence (Qinghai). (4) Regional-targeted governance: A “problem-oriented, space-targeted” approach is proposed to resolve resource conflict transmission chains. Through pressure index correction and spatial barriers diagnosis, this study provides methodological tools for sustainable agricultural water and soil resource management in Northwest China.

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