Evaluation of Water Resources Carrying Capacity in Gansu Section of Yellow River Basin Based on Fuzzy Comprehensive Evaluation Model

As a basic natural resource and strategic economic resource,the development and utilization of water resources is an important issue related to the national economy and people's livelihood.How to scientifically evaluate the water resources carrying capacity is the premise to improve the regional water resources carrying capacity and ensure the regional water security.The Gansu section of the Yellow River basin is an important water conservation and recharge area.Whether the water resources in this area can ensure the normal operation of the ecosystem and whether it can carry the sustainable development of social economy is the key to realize the high-quality development of the Yellow River basin.In this study,from the three dimensions of water consumption per capita,water consumption of 10000 yuan GDP and ecological water use rate,by constructing the evaluation index system and index grading standard of water resources carrying capacity,the fuzzy comprehensive evaluation model was used to evaluate the water resources carrying capacity of Gansu section of the Yellow River Basin,in order to provide theoretical decision-making basis for the comprehensive development,utilization and planning management of water resources in Gansu section of the Yellow River basin and even the whole basin,and help the high-quality development of the Yellow River basin.

Fuzzy Comprehensive Evaluation Model for Water Resources Carrying Capacity in Tarim River Basin,Xinjiang,China

This paper explores the method of comprehensive evaluation of water resources carrying capacity and sets up an evaluation model applying the fuzzy comprehensive evaluation method. Based on the data of nature,society,economics and water resources of the Tarim River Basin in 2002,we evaluated the water resources carrying capacity of the basin by means of the model. The results show that the comprehensive grades are 0.438 and 0.454 for Aksu and Kashi prefectures respectively,where the current water resources exploitation and utilization has reached a relative high degree and there is only a very limited water carrying capacity,0.620 for Kizilsu Kirgiz Autonomous Prefecture,where water resources carrying capacity is much higher,and in between for Hotan Prefecture and Bayingolin Mongo-lian Autonomous Prefecture. As a whole,the comprehensive grade of the Tarim River Basin is 0.508 and the current water resources exploitation and utilization has reached a relative high degree. Thus,we suggest that the integrated management of the water resources in the basin should be strengthened in order to utilize water resources scientifically and sustainably.

Evaluation of regional water resources carrying capacity based on binary index method and reduction index method

Based on the regional water resources carrying capacity(WRCC)evaluation principles and evaluation index system in the National Technical Outline of Water Resources Carrying Capacity Monitoring and Early Warning(hereafter referred to as the Technical Outline),this paper elaborates on the collection and sorting of the basic data of water resources conditions,water resources development and utilization status,social and economic development in basins,analysis and examination of integrity,consistency,normativeness,and rationality of the basic data,and the necessity of WRCC evaluation.This paper also describes the technique of evaluating the WRCC in prefecture-level cities and city-level administrative divisions in the District of the Taihu Lake Basin,which is composed of the Taihu Lake Basin and the Southeastern River Basin.The evaluation process combines the binary index evaluation method and reduction index evaluation method.The former,recommended by the Technical Outline,uses the total water use and the amount of exploited groundwater as evaluation indices,showing stronger operability,while the latter is developed by simplifying and optimizing the comprehensive index system with greater systematicness and completeness.The mutual validation and adjustment of the results of the above-mentioned two evaluation methods indicate that the WRCC of the District of the Taihu Lake Basin is overloaded in general because some prefecture-level cities and city-level administrative divisions in the Taihu Lake Basin and the Southeastern River Basin are in a severely overloaded state.In order to explain this conclusion,this paper analyzes the causes of WRCC overloading from the aspects of basin water environment,water resources development and utilization,water resources regulation and control ability,water resources utilization efficiency,and water resources management.

Evaluation of water resources carrying capacity of Gonghe basin based on fuzzy comprehensive evaluation method

Gonghe Basin belongs to arid and semi-arid climatic zone, where water resource is relatively scarce and desertification is serious, so it is necessary to find out water resources carrying capacity. By using fuzzy comprehensive evaluation method, the assessment on water resources carrying capacity in Gonghe Basin was conducted: Water resource carrying capacity of Gonghe County is less, while that of Guinan County and Chaka Town of Wulan County are greater; water resources of Gonghe Basin could sustain cultivated land of 652.6 thousand acres and grassland of 2 368.6 thousand acres respectively in 2020, water resources of Gonghe Basin could sustain cultivated land of 948.2 thousand acres and grassland of 2 247.6 thousand acres respectively in 2030.

Evaluation Model of Carrying Capacity of Water Resources Based on Standardized Indices of Radial Basis Function

[Objective] The aim was to study on RBF model about evaluation on carrying capacity of water resources based on standardized indices. [Method] The indices were transformed and the averages of standard values in different levels were taken as the standardized values of components of central vectors for basic functions of RBF hidden nodes. Hence, the basic functions are suitable for most indices, simplifying expression and calculation of basic functions. [Result] RBF models concluded through Monkey-king Genetic Algorithm with weights optimization are used in evaluation on water carrying capacity in three districts in Changwu County in Shaanxi Province, which were in consistent with that through fuzzy evaluation. [Conclusion] RBF, simple and practical, is universal and popular.

Evaluation of the water resources carrying capacity of Shandong peninsula, China

Research on the carrying capacity and security of water resources is vital for its contribution to implementing sustainable development goals. The limitation of water resources is one of the most important factors that influence the sustainable utilization of resources. Studying the carrying capacity of water resources will not only facilitate monitoring and forecast of national resources and environmental carrying capacity, but also be valuable for building ecological civilization. According to the principles of evaluation system, the carrying capacity of water resources on Shandong peninsula is explored. A comprehensive evaluation model of the carrying capacity of water resources is constructed based on the carrying capacity of water resources index and the composite of water resources index. The results show that the capacity of water resources on Shandong peninsula is generally consistent with overexploitation, and that the development and utilization of water resources has reached a considerable scale under existing economic and technological conditions. The carrying capacity of water resources in this region is relatively small, and the contradiction between supply and demand of water resources is alarming. Relative countermeasures are put forward, to improve the water resources carrying capacity and to provide a basis for future sustainable development and utilization of water resources in this region.

Evaluation on water resources carrying capacity of Changchun-Jilin Region

Based on such principles as sustainable development and ecological cycle, this paper evaluates the water resources carrying capacity(WCC) of Changchun-Jilin region using a population-economy-water resources correlation evaluation model built on the basis of WCC evaluation method as elaborated in the methodology of Functional Zoning of Population Development. Results show that the annual WCC of Changchun-Jilin region is able to support the population there, as a basic balance is struck between population and water resources. The incorporation of WCC into overall urban planning is one of the building blocks for sustainable city development with an advisable size.

Dynamic evaluation of water resources carrying capacity of the Dianchi Lake Basin in 2005-2015,based on DSPERM framework model and simulated annealing-projection pursuit model

With the intensi fed impact of human activities,most lakes have been severely disturbed and the lake ecosystem has been seriously damaged,which exerted a great impact on the living envi-ronment of human beings in the lake basins.The health of the lake ecosystem has gradually become one of the hot issues in recent years.In this study,the water resources carrying capacity(WRCC)was used to reveal the chain rel ationship between human activities and water environ-ment in the economic dewelopment of the Dianchi Lake Basin in Kunming City of China during 2005-2015.Specifically,we chose 25 ewaluation indicators related to the water environment and socialeconomic activities,classified them into six subsystems,Le,the driwing force subsystem(D),the water resources si tuation and consumption subsystem(S),the water resources pressure subsystem(P),the water environmental situation subsystem(E),the response subsystem(R),and the management subsystem(M),and built a comprehensive assessment system-DSPERM frame-work model.Si mulated annealing-projection pursuit model which reflects the structure or feature of high-dimensional data was adopted to calculate the WRCC of the Dianchi Lake Basin during 2005-2015 by weighting each evaluation indicator and each subsystem of the DSPERM frame work model.The resuls show that the WRCC of the Dlanchi Lake Basin was in level II(medium carying capacity)from 2005 to 2012.Since 2013,the WRCC has been at level II(strong carying capacity),and from 2005 to 2015,it showed a gradual upward trend.The evaluation indicators of each subsystem varied greatly and exhibited different development trends.The indicators of the water resources pressure subsystem had the greatest impact on the WRCC,followed by the in-dicators of the water environmental si tuation subsystem and the water resources situation and consumption subsystem.We recommend that the DSPERM framework model and the simulated anneal ing-projection pursuit model constructed in this work can be used to analyze the dynamic changes of the WRCC over the years.They have the advantages of practicability and feasibilty,and can provide the basis for the scienti fic decision-making and comprehensive management of regional water environment planning.

Assessment on the Water Resources Carrying Capacity in Karst Area Based on the Cosine Vector Included Angle

[Objective] The research aimed to assess the water resources carrying capacity in Guizhou Province based on the cosine vector included angle method. [Method] By using the cosine vector included angle method, the index weight was determined. The projection value of water resources carrying capacity in Guizhou Province was counted by using the multi-objective gray relational projection method. Moreover, the projection value which was counted by the index weight determined by the mean-variance method was as the control. [Result] The projection values which were obtained by two kinds of methods were very close, and the ordering result was consistent. [Conclusion] In the assessment of water resources carrying capacity, it was feasible to use the cosine vector included angle method to determine the index weight.

Comprehensive Assessment of Water Environment Carrying Capacity of Yunnan Province

Based on the concept and connotation of water environment carrying capacity, taking Yunnan Province as a case, this paper built water environment carrying capacity evaluation system from the perspectives of water resources, water environment carrying capacity and socio-economic development, and applied the index evaluation model to analyze the trends of water environment carrying capacity in Yunnan from 2006 to 2014. The results showed that, during those years, the evaluation value of water environment carrying capacity ranged from 0.23 to 0.46 in Yunnan Province.The minimum value was 0.23 in 2013, the maximum value was 0.46 in 2010. From 2006 to 2014, the evaluation value of water environment carrying capacity was less than 0.5 in general, and the water environment in a fragile state on the whole.

Integrating multisource RS data and GIS techniques to assist the evaluation of resource-environment carrying capacity in karst mountainous area

The karst mountainous area is an ecologically fragile region with prominent humanland contradictions.The resource-environment carrying capacity(RECC)of this region needs to be further clarified.The development of remote sensing(RS)and geographic information system(GIS)provides data sources and processing platform for RECC monitoring.This study analyzed and established the evaluation index system of RECC by considering particularity in the karst mountainous area of Southwest China;processed multisource RS data(Sentinel-2,Aster-DEM and Landsat-8)to extract the spatial distributions of nine key indexes by GIS techniques(information classification,overlay analysis and raster calculation);proposed the methods of index integration and fuzzy comprehensive evaluation of the RECC by GIS;and took a typical area,Guangnan County in Yunnan Province of China,as an experimental area to explore the effectiveness of the indexes and methods.The results showed that:(1)The important indexes affecting the RECC of karst mountainous area are water resources,tourism resources,position resources,geographical environment and soil erosion environment.(2)Data on cultivated land,construction land,minerals,transportation,water conservancy,ecosystem services,topography,soil erosion and rocky desertification can be obtained from RS data.GIS techniques integrate the information into the RECC results.The data extraction and processing methods are feasible on evaluating RECC.(3)The RECC of Guangnan County was in the mid-carrying level in 2018.The midcarrying and low-carrying levels were the main types,accounting for more than 80.00%of the total study area.The areas with high carrying capacity were mainly distributed in the northern regions of the northwest-southeast line of the county,and other areas have a low carrying capacity comparatively.The coordination between regional resource-environment status and socioeconomic development is the key to improve RECC.This study explores the evaluation index system of RECC in karst mountainous area and the application of multisource RS data and GIS techniques in the comprehensive evaluation.The methods can be applied in related fields to provide suggestions for data/information extraction and integration,and sustainable development.

基于陆海统筹的资源环境承载力评价方法探讨

海洋、海岸带蕴含的资源丰富,与人类生存发展息息相关。近年来,随着海洋经济的迅速增长,自然岸线和滨海湿地面积减少、生物多样性降低、典型生态系统受损、近岸海域灾害频发、渔业资源减少等问题日益显现。如何从战略高度提升海洋经济,开发和保护并举,确保海岸带、海洋资源取用合理是新时代的重要课题。陆地和海洋是生态系统不可分割的组成部分,开展陆海统筹的资源环境承载力评价是衡量区域经济发展与生态环境是否协调可持续发展的有效途径。文章系统地梳理了承载力概念的发展历程,对比了常用的海洋资源环境承载力评价方法,初步构建了陆海统筹的资源环境承载力评价指标体系,并提出使用熵值法来确定指标权重,采用状态空间评价模型或TOPSIS模型进行承载力综合评价,可以体现陆地和海洋相互影响、相互制约的关系,并具有较强的可操作性,评价结果可以反映区域资源环境承载力的空间差异或随时间变化情况,能够为海洋和海岸带保护利用提供有效借鉴。

雄安新区环境承载力评价指标体系构建与应用研究

基于水环境、大气环境和地质环境3个维度,选择工业万元GDP废水排放量、空气质量优良天数占比、平均地下水埋深度等26个三级评价指标,通过相关性分析和主成分分析等定量方法进行评价指标筛选,构建涵盖城市污水日处理能力、空气质量综合指数、地面沉降速率等11个三级评级指标的雄安新区环境承载力评价指标体系,并运用模糊综合评价法对2014-2020年新区的环境承载力进行评价。结果表明:2014-2020年,雄安新区的环境承载力评价结果分别为0.219 7、0.211 8、0.216 0、0.240 7、0.266 7、0.340 4、0.428 4,年均增长率为11.77%,总体呈现上升趋势,主要是由于2017年后新区持续加大白洋淀水环境的治理力度,区域环境状况明显改善,环境承载力大幅提升。

安徽省资源型城市水资源承载力时空演变及其驱动因素分析

以安徽省资源型城市为样本区域,建立“人口-水质-水量-社会”评价体系;采用秩和比综合评价法,分级评价安徽省资源型城市水资源承载力;借助标准差椭圆和地理探测器分析研究区域水资源承载力的空间分异性及驱动因子的解释力大小。结果表明:2011—2021年,安徽省资源型城市的水资源承载力指数整体相对较低,2011—2015年以Ⅱ级(超载)状态为主,2015—2021年逐渐改善为Ⅲ级(临界)或Ⅳ级(不超载);安徽北部城市水资源承载力比南部城市更低,但增速较快,不均衡的水资源承载力分布格局正逐步改善;对各市水资源承载力空间分异性解释力最大的因子为生态补水用水量,其次为水污染次数和采掘业从业人员数。

基于热传递减法集对势的区域水资源承载力评价

为有效评估区域水资源承载力系统演变特征并诊断脆弱性影响因素,引入物理学热传递思想,在集对分析传统减法集对势基础上进一步深化确定性项和不确定项之间的势差概念,构建了基于热传递减法集对势的区域水资源承载力评价方法,并应用于安徽省江淮丘陵区。结果表明:2011—2018年安徽省江淮丘陵区除合肥市外,其余地市水资源承载力水平整体有所改善,合肥市水资源承载力等级较低;人均水资源量、产水模数、生态用水率等因素是影响安徽省江淮丘陵区水资源承载力变化的重要脆弱性因素。整体而言,本文计算分析结果与传统减法集对势及半偏减法集对势计算结果基本一致,这表明构建的基于热传递减法集对势的水资源承载力评价方法计算结果合理有效,且丰富和发展了集对势的内涵,可为开展区域水资源承载力评价及脆弱性因素识别提供新的研究途径。

基于代谢理论的城市群水资源承载力综合评价

【目的】随着中国城市群的可持续发展,水资源短缺和时空分布不均等问题日益突出,水资源承载力对城市群的可持续发展具有重要的理论和现实意义【方法】基于区域水资源代谢理论,构建综合考虑区域水资源特征、社会经济系统特征和可持续发展原则的评价指标体系,采用TOPSIS计算了2019年京津冀城市群(BTHUA)的水资源承载力(WRCC)指数。在综合分析区域水资源现状的基础上,提出了提高区域水资源承载力的建议。【结果】结果显示:2019年BTHUA的整体承载能力指数并不高,北京市(0.5612)、天津市(0.5306)和唐山市(0.4075)评分较高,WRCC处于中等水平,仍有进一步发展的潜力。石家庄市(0.3843)、秦皇岛市(0.3165)、衡水市(0.2952)、承德市(0.2935)和邢台市(0.2674)评分中等,WRCC达到了临界值,并且发展潜力有限。而廊坊市(0.2214)、邯郸市(0.2188)、张家口市(0.2115)、保定市(0.2086)、沧州市(0.2026)评分偏低,WRCC达到上限,进一步发展的潜力非常有限。【结论】根据物质流分析,(1)水资源系统上,京津冀地区整体水资源生产能力不容乐观,水资源开发潜力不足;(2)社会经济上,BTHUA社会规模已经超过了水资源的承载能力,未来还将继续扩大;(3)生态系统上,除北京、天津、秦皇岛市,其余城市生态用水占比皆达不到标准。该研究考虑整个用水系统,可以得到比其他方法更全面、更准确的水资源承载力状况,可以为制定科学、可持续的水资源发展战略提供参考,并提供水资源利用政策和未来社会经济发展的建议。

京津冀城市群虚拟水流动格局变化对区域水资源压力的影响

【目的】合理的虚拟水调动是缓解水压力的重要途径,尤其在人口聚集的城市群地区,用水需求激增导致区域缺水问题严重。城市群内部不同地区间的紧密关联有助于促进虚拟水贸易,对优化城市群水资源配置、缓解水资源压力具有重要意义。【方法】采用多区域投入产出法,解析极端缺水的京津冀城市群内外间及其内部的虚拟水流动格局与变化,并揭示其对缓解区域水压力的作用。【结果】结果表明:(1)2012—2017年京津冀城市群与外部地区的虚拟水贸易量先增加后减少,而城市群内部虚拟水自给量却先减少后增加,2015年后京津冀内部虚拟水贸易增强;(2)京津冀城市群内部虚拟水流动格局呈现明显的时空异质性,虚拟水主要由经济相对欠发达的周边城市流入经济相对发达的中心城市(北京市、天津市、石家庄市和廊坊市),且随时间的推移,流动强度和向中心城市的集中程度均不断加强;(3)虚拟水流动明显缓解了京津冀中心城市的水资源压力,其实际水压力指数比虚拟水流动后的假定水压力指数年均下降12.12%,且下降程度逐年增加,但却加重了周边城市的水资源压力。【结论】京津冀城市群虚拟水流动有效缓解了中心城市的缺水压力,但不同城市的产业结构调整、虚拟水流动格局优化仍有很大提升空间。

基于改进模糊综合评价的十堰市水资源承载力评价

十堰市是南水北调中线工程调水源头所在地和核心水源区,为全面了解十堰市水资源可持续性开发利用情况,基于水资源、生态环境、社会经济三个层面构建了十堰市水资源承载力评价指标体系,使用灰色关联分析法对指标体系进行筛选,采用熵权法-层次分析法组合权重计算指标权重,通过改进的模糊综合评价法评价了2010~2021年十堰市水资源承载力情况。结果表明,十堰市水资源承载力整体呈波动上升趋势,2016年开始稳定达到可承载状态,丰水年可达到良好承载状态;生态环境子系统和社会经济子系统呈上升趋势,而水资源子系统波动较大,无明显规律;十堰市应继续加大污、废水治理力度,调整用水结构,建设节水型社会,以实现水资源与人类社会和谐发展。

熵权法和TOPSIS模型协同下的黄河流域(甘肃段)水资源承载力时空变化分析

本文基于2009、2012、2015、2018、2021年统计、国土调查和影像数据,采用熵权法和TOPSIS模型协同分析黄河流域(甘肃段)57个县级行政区的水资源承载力水平。结果表明:(1)2009—2021年,黄河流域(甘肃段)水资源子系统、社会经济子系统和生态环境子系统等级低和较低的县级行政区数量明显减少,等级高和较高的数量增加;(2)黄河流域(甘肃段)水资源承载力为不理想的区域集中位于陇中及陇东,水资源承载力为中等理想、较理想和理想的区域集中在玛曲、碌曲、卓尼及夏河县等甘南高原区域;(3)研究时期内,黄河流域(甘肃段)大部分区域水资源承载力为稳定或提高,这也反映了近20年环境治理成效显著,水源涵养能力与水资源综合利用效率稳步提升。

基于DPSIR模型的梁子湖流域水资源承载力评价与保护策略

水资源承载力评价是“双评价”的重要内容,是国土空间规划的前提和基础。如何全面量化测度水资源承载力并对接国土空间规划进行区域空间格局优化,是梁子湖流域社会经济可持续发展中亟待解决的问题。本文选取社会、经济、生态多维度评价指标,以Arc GIS为平台,通过构建DPSIR评价模型,对梁子湖流域2020年水资源承载力进行评价并将评价结果进行空间落位。研究结果表明,基于DPSIR模型构建的梁子湖水资源承载力评价体系中,驱动力子系统权重占比最大,人为调控对水资源承载力具有较大影响。流域2020年水资源承载力总体居于良好水平,各城市之间由于社会经济发展水平的不同以及地形地貌差异,其水资源承载力也存在显著区域差别,水资源承载力高的区域,应以保护为主,水资源承载力较高的区域,应保护与开发并举,水资源承载力较低的区域,要以污染防治,控制规模为主。通过探索梁子湖流域水资源承载力从评估框架到保护实施的技术方法,以期为流域国土空间规划与生态保护提供参考。