
The Response of Water Resources System to Urbanization in Poyang Lake Basin
Chun FU, Yong LUO, Wu-han PEI, Jun-peng DENG, Le-zhi WANG
The Response of Water Resources System to Urbanization in Poyang Lake Basin
In order to explore the internal response mechanism and response degree of urbanization development and water resources utilization, and optimize the allocation of water resources, and coordinate the urban development speed and the degree of water resources development and utilization, the temporal and spatial distribution of water resources is taken as the cornerstone, a response model is constructed, the weight is determined by the entropy weight method, and the correlation analysis method analyzes the correlation between urbanization and water resources utilization. The results show that the urbanization development level and the utilization of water resources in the Poyang Lake Basin increases simultaneously. The upward trend of social, demographic, and spatial urbanization in the urbanization system is relatively synchronized, with large economic fluctuations and signs of decline in the early stage, but it has shown an increasing trend since 2016. The Poyang Lake Basin is a typical humid area. The resources endowment is greatly affected by rainfall, and the occurrence is unstable. Coupled with the rapid development of urbanization, the load of the water resources system is constantly loading. The development of urbanization has a great effect on the development and utilization of urban water resources. Urbanization has two-sided effects on the water resources system. On the one hand, a lot of water resources are consumed in the process of urbanization. On the other hand, the development of urbanization promotes the water resources system objectively.
Poyang Lake basin / water resource utilization / responsiveness / urbanization / entropy method / regression analysis {{custom_keyword}} /
Tab.1 Urbanization and water resources utilization evaluation system表1 城镇化与水资源利用评价体系 |
目标层 | 准则层 | 权重 | 指标层 | 测算方法 | 权重 |
---|---|---|---|---|---|
城 镇 化 系 统 | 社会城镇化X 1 | 0.280 | 人均消费水平X 11/(元·人-1) | 消费总额/区域总人口 | 0.067 |
人均邮电业务量X 12/(元·人-1) | 邮电业务总额/区域总人口 | 0.067 | |||
万人拥有卫生机构床位数X 13/张 | 卫生机构床位数/区域总人口 | 0.074 | |||
每万人中中专及以上学历在校学生X 14/人 | 中专及以上学历人数/区域总人口 | 0.072 | |||
人口城镇化X 2 | 0.212 | 人口规模X 21/万人 | 区域总人口 | 0.056 | |
城镇人口比重X 22/% | 城镇总人口/区域总人口 | 0.054 | |||
城镇人口密度X 23/(人·km-2) | 城镇总人口/城区建成区面积 | 0.044 | |||
非农从业人员比重X 24/% | 非农从业人员数/区域总人口 | 0.057 | |||
经济城镇化X 3 | 0.228 | 人均GDP X 31/(元·人-1) | GDP总量/区域总人口 | 0.078 | |
城镇居民人均可支配收入X 32/(元·人-1) | 城镇居民可支配收入/城镇总人口 | 0.071 | |||
工业增加值占GDP比重X 33/% | 工业增加值/GDP总量 | 0.054 | |||
非农产值占GDP比重X 34/% | 非农产值/GDP总量 | 0.026 | |||
空间城镇化X 4 | 0.280 | 城镇密度X 41 | 城镇房屋建筑面积/建成区面积 | 0.067 | |
建成区经济密度X 42/(万元·km-2) | 建成区非农产业增加值/建成区面积 | 0.044 | |||
人均建成区面积X 43/(m2·人-1) | 建成区面积/城镇总人口 | 0.074 | |||
园林绿化面积占建成区比重X 44/% | 园林绿化面积/建成区面积 | 0.023 | |||
交通运输网密度X 45/(km·km-2) | 区域内所有的道路的总长度/区域总面积 | 0.071 | |||
水 资 源 系 统 | 水资源自然禀赋Y 1 | 0.182 | 城镇密度X 41 | 城镇房屋建筑面积/建成区面积 | 0.067 |
建成区经济密度X 42/(万元·km-2) | 建成区非农产业增加值/建成区面积 | 0.044 | |||
人均建成区面积X 43/( m2·人-1) | 建成区面积/城镇总人口 | 0.074 | |||
园林绿化面积占建成区比重X 44/% | 园林绿化面积/建成区面积 | 0.023 | |||
水资源用水负荷Y 2 | 0.212 | 交通运输网密度X 21/(km·km-2) | 区域内所有的道路的总长度/区域总面积 | 0.071 | |
人均城镇公共用水量Y 22/亿m3 | 城镇公共用水量/城镇总人口 | 0.024 | |||
工业用水量Y 23/亿m3 | 统计指标 | 0.066 | |||
生态环境用水量Y 24/亿m3 | 统计指标 | 0.063 | |||
水资源利用效率Y 3 | 0.258 | 万元GDP用水量Y 31/(m3·万元-1) | 地区水资源消耗量/ GDP总量 | 0.083 | |
万元工业增加值用水量Y 32/( m3·万元-1) | 工业总用水量/工业总增加值 | 0.095 | |||
工业重复用水率Y 33/% | 统计指标 | 0.080 | |||
水资源管理质量Y 4 | 0.349 | 水功能区水质达标率Y 41/% | (达标河长/总河长)×100% | 0.052 | |
万元工业增加值废水排放量Y 42/(m3·万元-1) | 工业废水排放量/工业增加值 | 0.101 | |||
城镇污水处理率Y 43/% | (城镇污水处理量/城镇污水排放量)×100% | 0.107 | |||
工业废水达标排放率Y 44/% | (工业废水排放达标量/工业废水排放量)×100% | 0.089 |
Tab.2 Correlation between each component of urbanization and each component of water resources表2 城镇化各分量与水资源各分量的相关关系 |
分量 | 统计指标 | 社会城镇化X 1 | 人口城镇化X 2 | 经济城镇化X 3 | 空间城镇化X 4 |
---|---|---|---|---|---|
水资源自然禀赋Y 1 | 相关系数 | 0.199 | 0.344 | 0.253 | 0.309 |
p值 | 0.516 | 0.250 | 0.404 | 0.304 | |
水资源用水负荷Y 2 | 相关系数 | -0.782*** | -0.895*** | -0.896*** | -0.922*** |
p值 | 0.002 | 0 | 0 | 0 | |
水资源利用效率Y 3 | 相关系数 | 0.839*** | 0.945*** | 0.948*** | 0.951*** |
p值 | 0 | 0 | 0 | 0 | |
水资源管理质量Y 4 | 相关系数 | 0.921*** | 0.982*** | 0.932*** | 0.979*** |
p值 | 0 | 0 | 0 | 0 |
Tab.3 The comprehensive response of urban water resources comprehensive utilization to urbanization in the Poyang Lake Basin from 2006 to 2018 and its test表3 2006-2018年鄱阳湖流域城镇水资源综合利用对城镇化的综合响应度及其检验 |
指数 | 函数表达式 | 拟合优度 | 响应 | ||
---|---|---|---|---|---|
R2 | F | P | |||
水资源自然禀赋指数 | Y 1=0.075-0.424X+1.743X 2-1.489X 3 | 0.470 | 2.665 | 0.111 | 0.225 |
水资源用水负荷指数 | Y 2=0.195-0.257X-0.178X 2+0.295X3 | 0.900 | 26.979 | 0 | 0.200 |
水资源用水效率指数 | Y 3=-0.025+0.705X-0.55X 2+0.129X 3 | 0.988 | 249.939 | 0 | 0.304 |
水资源管理质量指数 | Y 4=-0.008+0.568X-0.175X 2-0.019X 3 | 0.990 | 301.688 | 0 | 0.391 |
水资源综合利用指数 | Y=0.237+0.592X+0.841X 2-1.085X 3 | 0.928 | 38.791 | 0 | 0.558 |
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