Extensive land use will cause many environmental problems.It is an urgent task to improve land use efficiency and optimize land use patterns.In recent years,due to the flow decrease,the Guanzhong Basin in Shaanxi Prov...Extensive land use will cause many environmental problems.It is an urgent task to improve land use efficiency and optimize land use patterns.In recent years,due to the flow decrease,the Guanzhong Basin in Shaanxi Province is confronted with the problem of insufficient water resources reserve.Based on the Coupled Ground-Water and Surface-Water Flow Model(GSFLOW),this paper evaluates the response of water resources in the basin to changes in land use patterns,optimizes the land use pattern,improves the ecological and economic benefits,and the efficiency of various spatial development,providing a reference for ecological protection and high-quality development of the Yellow River Basin.The research shows that the land use pattern in the Guanzhong Basin should be further optimized.Under the condition of considering ecological and economic development,the percentage change of the optimum area of farmland,forest,grassland,water area,and urban area compared with the current land use area ratio is+2.3,+2.4,-6.1,+0.2,and+1.6,respectively.The economic and ecological value of land increases by14.1%and 3.1%,respectively,and the number of water resources can increase by 2.5%.展开更多
Groundwater is an important water resource in Haihe River basin,North China.The number of aquifers that appear to be declining under conditions of groundwater overdraft is increasing.To effectively manage the water re...Groundwater is an important water resource in Haihe River basin,North China.The number of aquifers that appear to be declining under conditions of groundwater overdraft is increasing.To effectively manage the water resources,there is a strong scientific need to analyze the net use of this important water resource and to quantify the water rights allocation for improved understanding of the future water展开更多
Agricultural water allocation system based on priority rights has caused regional conflicts and down-stream ecological degradation.It is the urgent need to introduce the concept of the initial water rights and estab-l...Agricultural water allocation system based on priority rights has caused regional conflicts and down-stream ecological degradation.It is the urgent need to introduce the concept of the initial water rights and estab-lish benefi ts compensation mechanism to resolve such problems.This paper takes the Shiyang River basin as an example to calculate the opportunity cost of 0.97×108 m3 of agricultural water encroached by the middle reach based on initial water right allocation system under which water is allocated in accordance with the ratio between agricultural population of two different regions concerning the downstream ecological reconstruction needs with Bio-economic model(BEM).The results suggest that the total economic loss of Minqin County for ecological reconstruction amounts to 2.57×108 yuan,of which 1.68×108 yuan is ecological compensation,representing the economic loss Minqin suffered for ecological reconstruction which should burden benefi cial groups of ecological reconstruction and 0.89×108 yuan is the economic loss Minqin suffered due to Liangzhou's encroachment behavior which should be compensated by Liangzhou.展开更多
以2000-2021年Web of Science 3大引文数据库和中国知网收录的524篇流域初始水权分配研究文献为基础,利用Citespace软件对文献的作者研究机构与团队、关键词进行了可视化分析,并综述了流域初始水权分配方法的研究进展。结果表明:流域初...以2000-2021年Web of Science 3大引文数据库和中国知网收录的524篇流域初始水权分配研究文献为基础,利用Citespace软件对文献的作者研究机构与团队、关键词进行了可视化分析,并综述了流域初始水权分配方法的研究进展。结果表明:流域初始水权分配实质上是将流域多年平均水资源量(或某一水文频率下的天然径流量)作为流域用水总量控制指标,按照“流域区域行业”水权科层制分配模式,分配给流域内所辖各行政区及行业,以推进区域均衡协调发展与产业结构优化升级;在流域初始水权分配过程中,主要依据流域所辖各行政区的经济社会特征,统筹体现社会公平、经济效益、生态保护、风险控制等多维目标,明确水权分配原则,设计水权分配指标体系,建立基于分配模式的初始水权分配模型。指出今后亟须深入贯彻落实“以水定产”绿色发展理念,强化水资源刚性约束与双控行动,探索流域初始水权与产业结构优化适配模式。展开更多
基金jointly supported by the National Natural Science Foundation of China(41702280)the projects of the China Geology Survey(DD20221754 and DD20190333)。
文摘Extensive land use will cause many environmental problems.It is an urgent task to improve land use efficiency and optimize land use patterns.In recent years,due to the flow decrease,the Guanzhong Basin in Shaanxi Province is confronted with the problem of insufficient water resources reserve.Based on the Coupled Ground-Water and Surface-Water Flow Model(GSFLOW),this paper evaluates the response of water resources in the basin to changes in land use patterns,optimizes the land use pattern,improves the ecological and economic benefits,and the efficiency of various spatial development,providing a reference for ecological protection and high-quality development of the Yellow River Basin.The research shows that the land use pattern in the Guanzhong Basin should be further optimized.Under the condition of considering ecological and economic development,the percentage change of the optimum area of farmland,forest,grassland,water area,and urban area compared with the current land use area ratio is+2.3,+2.4,-6.1,+0.2,and+1.6,respectively.The economic and ecological value of land increases by14.1%and 3.1%,respectively,and the number of water resources can increase by 2.5%.
文摘Groundwater is an important water resource in Haihe River basin,North China.The number of aquifers that appear to be declining under conditions of groundwater overdraft is increasing.To effectively manage the water resources,there is a strong scientific need to analyze the net use of this important water resource and to quantify the water rights allocation for improved understanding of the future water
基金supported by the "100 Talents Pro-gramme" of Chinese Academy of Sciences.
文摘Agricultural water allocation system based on priority rights has caused regional conflicts and down-stream ecological degradation.It is the urgent need to introduce the concept of the initial water rights and estab-lish benefi ts compensation mechanism to resolve such problems.This paper takes the Shiyang River basin as an example to calculate the opportunity cost of 0.97×108 m3 of agricultural water encroached by the middle reach based on initial water right allocation system under which water is allocated in accordance with the ratio between agricultural population of two different regions concerning the downstream ecological reconstruction needs with Bio-economic model(BEM).The results suggest that the total economic loss of Minqin County for ecological reconstruction amounts to 2.57×108 yuan,of which 1.68×108 yuan is ecological compensation,representing the economic loss Minqin suffered for ecological reconstruction which should burden benefi cial groups of ecological reconstruction and 0.89×108 yuan is the economic loss Minqin suffered due to Liangzhou's encroachment behavior which should be compensated by Liangzhou.
文摘以2000-2021年Web of Science 3大引文数据库和中国知网收录的524篇流域初始水权分配研究文献为基础,利用Citespace软件对文献的作者研究机构与团队、关键词进行了可视化分析,并综述了流域初始水权分配方法的研究进展。结果表明:流域初始水权分配实质上是将流域多年平均水资源量(或某一水文频率下的天然径流量)作为流域用水总量控制指标,按照“流域区域行业”水权科层制分配模式,分配给流域内所辖各行政区及行业,以推进区域均衡协调发展与产业结构优化升级;在流域初始水权分配过程中,主要依据流域所辖各行政区的经济社会特征,统筹体现社会公平、经济效益、生态保护、风险控制等多维目标,明确水权分配原则,设计水权分配指标体系,建立基于分配模式的初始水权分配模型。指出今后亟须深入贯彻落实“以水定产”绿色发展理念,强化水资源刚性约束与双控行动,探索流域初始水权与产业结构优化适配模式。
