Subjects: Other Disciplines >> Synthetic discipline submitted time 2023-03-28 Cooperative journals: 《中国科学院院刊》
Abstract： Clean water and sanitation (SDG 6) is one of the 17 Sustainable Development Goals (SDGs) of the United Nations, but so far, the world is not on the right track to achieve SDG 6 targets. In order to change this situation and lead the world to achieve the goal of sustainable water resources management, the United Nations initiated the SDG 6 global acceleration framework including financing, data and information, capacity development, innovation, and governance. From the perspective of data and information that serving SDG 6 target monitoring and evaluation, this study analyzes the current global data progress, the role of Big Earth Data, technology, and the integrated application in SDG 6 target monitoring and evaluation. The study summarizes two problems in the global SDG 6 monitoring and evaluation: 1) There is still a lack of sustainably provided high-precision indicator monitoring data set. 2) Lack of operational system integrating data acquisition, indicator calculation and target evaluation. On this basis, the study proposes to establish standardized statistical forms and technical guidelines, to build a system platform for the monitoring and evaluation of all the SDG 6 targets and indicators.
Subjects: Hydraulic Engineering >> River Silt Engineering submitted time 2021-09-01
Abstract： "
Peer Review Status:
Awaiting Review
Subjects: Hydraulic Engineering >> River Silt Engineering submitted time 2021-01-29
Abstract： This article systematically summarized the development process of the operation mode of reservoirs on sediment-laden rivers in China since the 1950s, especially explained the application and design technology of "storing clean water and regulating muddy flow". The so-called " storing clean water and regulating muddy flow " application is to fully consider the changes in the incoming water and sediment process in the reservoir according to the requirements of the reservoir development task, and coordinate the impact of the sediment on the siltation form and effective reservoir capacity to maximize the coordination degree of the water-sediment relationship in the downstream river as the core. Through the comprehensive coordinated control of "blocking, regulating and discharging", the comprehensive utilization benefits of reservoirs can be brought. In design, in order to better exert the reservoir regulation function, it is necessary to consider the demand for storage capacity of water and sediment regulation, and set up sufficient water and sediment regulation storage capacity to reduce the adverse impact of the forced sediment discharge of the reservoir on the downstream water-sediment relationship. The storage capacity distribution design is based on the rules of “deep channel for sediment regulation, medium channel for benefit and high channel for flood regulation”, to avoid the use of effective reservoir capacity due to sedimentation. Rivers with ultra-high sediment content should set abnormal sediment discharge bottom outlets to form a "normal + abnormal" double sediment erosion datum plane, to realize the recycling of part of the sediment storage capacity, and the integrated utilization of sediment storage capacity and water and sediment regulation storage capacity. Reservoir should adopt water and sediment separation development method, which is “"mainstream large reservoirs for sediment regulation, tributary small reservoirs for water supply", in rivers with super high sediment content to solve the contradiction between effective reservoir capacity maintenance and water supply regulation. On the basis of achieving long-term preservation of effective storage capacity, "storing clean water and regulating muddy flow" better takes into account the needs of reservoir water and sediment regulation in sediment-laden rivers. The results will provide guidance and reference for the reservoir engineering design and operation of sediment-laden river, in the current and future periods.
Peer Review Status:Awaiting Review
Subjects: Geosciences >> Geography submitted time 2020-12-17 Cooperative journals: 《干旱区研究》
Abstract：干旱区湖泊对气候变化和人类活动的影响极为敏感，湖泊面积变化是区域水循环和水平衡改变的结果。以新疆吐鲁番艾丁湖为例，利用陆地卫星遥感影像采用水体指数法解译了艾丁湖1986—2018年的湖泊面积变化，分析了湖泊面积变化与区域气候变化、河流径流量变化的相关关系，并分析了艾丁湖历年最大湖水容积和湖面蒸发量变化。结果表明：艾丁湖最大湖面面积一般在3月，湖泊最大面积的年际变化规律与入湖河流径流变化基本一致，自1980年代中期以来，东天山冰川萎缩造成河流径流增加，艾丁湖总体呈增大趋势；1996—2006年计算的最大湖水容积要明显大于湖水蒸发量。2006年以后随径流增加趋势减弱，湖面面积缩小。干旱区气温变化导致冰川萎缩影响的河流径流量是影响干旱区河流尾闾湖泊面积变化的决定性因素。
Subjects: Environmental Sciences, Resource Sciences >> Basic Disciplines of Environmental Science and Technology submitted time 2019-06-13 Cooperative journals: 《干旱区地理》
Abstract：水—经济空间关系是干旱区与半干旱区水资源研究的热点，揭示水—经济空间分布演变规律和因果关系，可为优化水资源合理配置、合理部署产业结构调整政策提供理论和决策参考。研究应用水足迹理论，核算新疆各地州1991—2015年农作物水足迹，结合信息熵值理论分析新疆各地州农作物水足迹、国内生产总值、第一产业增加值其熵值的空间演变规律及因果关系。结果表明：新疆农作物水足迹与第一产业增加值、国内生产总值空间演变整体向着均衡有序的方向发展，水—经济的空间不均衡性逐步缩小；新疆农作物水足迹显著影响其第一产业增加值空间演变，影响期1～5 a，农业经济空间分布受农业用水空间分布的长期制约；农作物水足迹和国内生产总值没有空间演变因果关系，全疆经济发展向着第二产业、第三产发展转型，农业经济不再显著影响全疆经济发展。
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