河西走廊水资源-生态环境-社会经济系统耦合关系及时空分异

doi:10.13866/j.azr.2024.09.09

Abstract

Abstract:

Promoting the coordinated development of water resources, the ecological environment, and the socio-economic system provides technical support for enhancing regional economic growth, social progress, ecological harmony, and high-quality development. Based on the modified coupling coordination degree model, this paper evaluated the coupling coordination level of water resources-ecological environment-social economic system in the Hexi Corridor. The gray correlation degree model and Theil index were used to identify the driving factors and spatial heterogeneity. The trend surface was utilized to map the global distribution of the coupling coordination degree. The results showed that: (1) The comprehensive development level of water resources-economy-ecosystem driven by economic development increased every year, and the comprehensive development index enhanced from 0.29 in 2006 to 0.65 in 2021. (2) The coupling coordination degree between the water resources, economic, and ecological subsystems in the Hexi Corridor showed different trends, and the development of the coupling degree of the water resources-ecology-economy system was upgraded from the antagonistic to the running-in stage. The coordination degree experienced five stages of “mild imbalance recession-on the verge of imbalance recession-reluctant coordinated development-primary coordinated development-intermediate coordinated development”. (3) The spatial heterogeneity in the region first increased and then decreased. The spatial distribution revealed that the development of the southeast was better than that of the northwest. Jinchang and Zhangye have gradually become the dominant areas of development in Hexi. (4) Urbanization rate, total pollutant discharge, and water-saving irrigation areas played a remarkable role in driving the coupling development of water resources-ecological environment-social economy in the Hexi Corridor. These results have a certain reference-related significance for the coordinated development of the economy-ecology-water resources system in the five cities of the Hexi Corridor.

Key words: modified coupling coordination model, water resources-ecological environment-social economic system, spatio-temporal change features, driving factors, Hexi Corridor

ZHANG Wenrui, SUN Dongyuan, WANG Yike, YANG Jun, LAN Lijun, JIN Hujia, XU Yu. Coupling relationship and spatiao-temporal differentiation of the water resources-ecological environment-social economic system in the Hexi Corridor[J].Arid Zone Research, 2024, 41(9): 1527-1537.

Figures/Tables 9

Fig. 1

Fig. 2

Tab. 1

Tab. 2

Evaluation criteria for the interval division of system coupling degree and coordinated development"

不可接受区间			可接受区间
区间	协调发展度 $D$ 评价	耦合度 $C$ 评价	区间	协调发展度 $D$ 评价	耦合度 $C$ 评价
0~0.09	极度失调衰退	低水平耦合状态	0.50~0.59	勉强协调发展	磨合阶段
0.10~0.19	严重失调衰退		0.60~0.69	初级协调发展
0.20~0.29	中度失调衰退		0.70~0.79	中级协调发展
0.30~0.39	轻度失调衰退	颉颃阶段	0.80~0.89	良好协调发展	高水平耦合阶段
0.40~0.49	濒临失调衰退	颉颃阶段	0.90~1.00	优质协调发展	高水平耦合阶段

Tab. 2

Fig. 3

Fig. 4

Fig. 5

Tab. 3

Fig. 6

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目标层	指标层	指标属性	指标编号	变异系数法权重	层次分析法权重	综合权重
社会经济	人口/10⁴人	+	S1	0.02	0.07	0.04
	城市化率/%	+	S2	0.06	0.11	0.09
	三产占比/%	+	S3	0.29	0.10	0.19
	人均GDP/10⁴元	+	S4	0.17	0.12	0.15
	第三产业占GDP比例/%	+	S5	0.14	0.17	0.15
	工业增加值/10⁸元	+	S6	0.17	0.15	0.16
	农田实际灌溉面积/hm²	+	S7	0.06	0.13	0.10
	粮食总产量/10⁴ t	+	S8	0.09	0.15	0.12
生态环境	排污总量/10⁸ t	-	E1	0.07	0.16	0.12
	生态环境用水量/10⁸ m³	+	E2	0.46	0.54	0.50
	城市环境用水量/10⁸ m³	+	E3	0.47	0.30	0.38
水资源	万元工业增加值用水量/10⁸ m³	-	W1	0.10	0.08	0.09
	年降水量/mm	+	W2	0.04	0.09	0.06
	地表水供水量/10⁸ m³	+	W3	0.03	0.08	0.06
	地下水供水量/10⁸ m³	+	W4	0.09	0.08	0.08
	农田灌溉用水量/10⁸ m³	-	W5	0.03	0.09	0.06
	林牧渔畜用水量/10⁸ m³	-	W6	0.03	0.08	0.06
	工业用水量/10⁸ m³	-	W7	0.07	0.08	0.08
	城镇公共用水量/10⁸ m³	-	W8	0.07	0.08	0.08
	居民生活用水量/10⁸ m³	-	W9	0.07	0.09	0.08
	节水灌溉面积/hm²	+	W10	0.05	0.08	0.06
	人均用水量/L	-	W11	0.17	0.09	0.13
	万元GDP用水量/m³	-	W12	0.25	0.08	0.16

年份	耦合协调度	泰尔指数	年份	耦合协调度	泰尔指数
2006年	0.34	0.0119	2014年	0.43	0.0151
2007年	0.38	0.0058	2015年	0.50	0.0122
2008年	0.37	0.0050	2016年	0.56	0.0067
2009年	0.36	0.0037	2017年	0.60	0.0038
2010年	0.42	0.0050	2018年	0.61	0.0138
2011年	0.45	0.0080	2019年	0.58	0.0024
2012年	0.45	0.0046	2020年	0.65	0.0188
2013年	0.38	0.0093	2021年	0.70	0.0067

Coupling relationship and spatiao-temporal differentiation of the water resources-ecological environment-social economic system in the Hexi Corridor

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