江西省绿水资源消耗量及利用效率时空变化特征

doi:10.11988/ckyyb.20240735

raybet体育在线院报 ›› 2025, Vol. 42 ›› Issue (8): 61-67.DOI: 10.11988/ckyyb.20240735

江西省绿水资源消耗量及利用效率时空变化特征

吴治玲¹^,²(), 涂安国¹^,²(), 聂小飞¹^,², 莫明浩¹^,²

¹ 江西省水利科学院流域水土保持江西省重点实验室,南昌 330029
² 江西省水利科学院江西省鄱阳湖流域生态水利技术创新中心,南昌 330029

收稿日期:2024-07-10 修回日期:2024-09-01 出版日期:2025-08-01 发布日期:2025-08-01
通信作者:
涂安国(1983-),男,江西余干人,高级工程师,博士,主要从事生态水利与水土保持研究。E-mail:tag20@163.com
作者简介:
吴治玲(1978-),女,江西井冈山人,工程师,主要从事水土保持规划设计研究。E-mail:1059751189@qq.com
基金资助:
江西省科技厅揭榜挂帅项目(20213AAG01012); 江西省水利科技项目(202023ZDKT11); 江西省水利科技项目(202324TGKT06)

Spatiotemporal Variation Characteristics of Green Water Resource Consumption and Utilization Efficiency in Jiangxi Province

WU Zhi-ling¹^,²(), TU An-guo¹^,²(), NIE Xiao-fei¹^,², MO Ming-hao¹^,²

¹ Jiangxi Key Laboratory of Watershed Soil and Water Conservation,Jiangxi Academy of Water Science and Engineering,Nanchang 330029,China
² Jiangxi Provincial Technology Innovation Center for Ecological Water Engineering in Poyang Lake Basin,Jiangxi Academy of Water Science and Engineering, Nanchang 330029,China

Received:2024-07-10 Revised:2024-09-01 Published:2025-08-01 Online:2025-08-01

摘要/Abstract

摘要： 了解区域绿水资源的消耗量和利用效率,有助于制定更合理的水资源管理和农业政策。以2001—2020年间的蒸散发和净生产力数据资料为基础,采用Mann-Kendall趋势分析方法,对江西省的绿水资源消耗量及利用效率的时空变化进行定量评估。结果表明,2001—2020年20 a间,江西省绿水资源消耗总量为796~965 mm,平均值为887.75 mm,其中生产性绿水和非生产性绿水消耗量分别为519.12~692.53、230.64~356.30 mm。生产性绿水消耗量占总消耗量的比例为60.83%~74.02%,全省平均为69.26%。年均绿水利用效率为0.67~0.81 g C/(kg H₂O)。2001—2020年间,江西省绿水资源消耗总量、生产性绿水和非生产性绿水消耗量均呈显著下降趋势,下降速率分别为5.26、1.73、3.53 mm/a,而绿水利用效率呈显著的上升趋势,上升速率为0.006 7 g C/((kg H₂O)·a)。空间分布上,江西省绿水资源消耗总量和生产性绿水消耗量均呈南高北低的分布格局。其中生产性绿水消耗量除鄱阳湖周边呈上升趋势外,其他地区均呈下降趋势,而绿水消耗总量除九江市和景德镇部分地区呈不显著的下降趋势外,其他区域均呈极显著的下降趋势。全省92.70%的区域绿水利用效率呈不同程度的增加趋势。

关键词: 绿水资源, 蒸散发, Mann-Kendall趋势分析方法, 水分利用效率, 变化特征, 江西省

Abstract:

[Objective] This study aims to conduct an in-depth analysis of the spatiotemporal variation characteristics of green water resource consumption and utilization efficiency in Jiangxi Province over the past two decades (2001-2020) to provide scientific support for regional water resource management and agricultural policy making. [Methods] We calculated green water utilization efficiency using two key datasets: (1) the transpiration-to-evapotranspiration ratio dataset (2001-2020) from China’s National Ecological Science Data Center, and (2) annual net primary productivity estimates derived from the MYD17A3H.006 remote sensing product. The Mann-Kendall trend analysis method was then applied to quantitatively evaluate the spatiotemporal trends in green water consumption and utilization efficiency across Jiangxi Province. [Results] From 2001 to 2020, total green water consumption in Jiangxi Province ranged from 796 to 965 mm, with an average of 887.75 mm, showing a significant downward trend at a rate of 5.26 mm/a. Productive green water consumption ranged from 519.12 to 692.53 mm, averaging 614.95 mm, and also showed a clear decreasing trend at 1.73 mm/a. Non-productive green water consumption ranged from 230.64 to 356.30 mm, with an average of 272.79 mm, showing a relatively significant downward trend at 3.53 mm/a. The annual green water utilization efficiency ranged from 0.67 to 0.81 g C/(kg H₂O), with a multi-year average of 0.74 g C/(kg H₂O), demonstrating a significant increasing trend at 0.006 7 g C/((kg H₂O)·a). Spatially, both total green water consumption and productive green water consumption exhibited a distribution pattern of higher values in the south and lower values in the north, with the highest observed in Ganzhou. Productive green water consumption showed an increasing trend around the Poyang Lake area, while most other regions exhibited decreasing trends. Total green water consumption showed an extremely significant decreasing trend across all regions, except in parts of Jiujiang and Jingdezhen. Across 92.70% of the province, green water utilization efficiency exhibited varying degrees of increase, with Ji’an and Yichun showing extremely significant improvements. [Conclusion] The decline in total green water consumption and the improvement in its utilization efficiency demonstrate notable achievements in water resources management and water-saving practices in Jiangxi Province. Future efforts should focus on optimizing water allocation, promoting water-saving irrigation technologies, and adopting high-efficiency cultivation practices to further enhance green water utilization efficiency in response to challenges posed by climate change and human activities.

Key words: green water resource, evapotranspiration, Mann-Kendall trend analysis method, water utilization efficiency, variation characteristic, Jiangxi Province

中图分类号:

吴治玲, 涂安国, 聂小飞, 莫明浩. 江西省绿水资源消耗量及利用效率时空变化特征[J]. raybet体育在线院报, 2025, 42(8): 61-67.

WU Zhi-ling, TU An-guo, NIE Xiao-fei, MO Ming-hao. Spatiotemporal Variation Characteristics of Green Water Resource Consumption and Utilization Efficiency in Jiangxi Province[J]. Journal of Changjiang River Scientific Research Institute, 2025, 42(8): 61-67.

图/表 7

图1 江西省2001—2020年绿水消耗量年际变化过程

Fig.1 Interannual variation of green water consumption in Jiangxi Province from 2001 to 2020

图2 江西省绿水消耗年内动态变化

Fig.2 Dynamic changes of green water consumption in Jiangxi Province within a year

图3 江西省多年平均绿水消耗量及组成

Fig.3 Multi-year average green water consumption and its composition in Jiangxi Province

图4 江西省绿水消耗M-K趋势检验

Fig.4 M-K trend test for green water consumption in Jiangxi Province

图5 2001—2020年江西省WUE年际变化

Fig.5 Green water utilization efficiency in Jiangxi Province from 2001 to 2020

图6 江西省WUE空间分布及其M-K趋势检验

Fig.6 Spational distribution of green water utilization efficiency in Jiangxi Province and its Mann-Kendall trend test

图7 江西省年WUE与ET、T、NPP的相关性

Fig.7 Correlation between annual WUE and ET, T, NPP in Jiangxi Province

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江西省绿水资源消耗量及利用效率时空变化特征

Spatiotemporal Variation Characteristics of Green Water Resource Consumption and Utilization Efficiency in Jiangxi Province

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