Improved maps of surface water bodies, large dams, reservoirs, and lakes in China

IF 11.2 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Earth System Science Data Pub Date : 2022-08-23 DOI:10.5194/essd-14-3757-2022

Xinxin Wang, Xiangming Xiao, Yuanwei Qin, Jinwei Dong, Jihua Wu, Bo Li

{"title":"Improved maps of surface water bodies, large dams, reservoirs, and lakes in China","authors":"Xinxin Wang, Xiangming Xiao, Yuanwei Qin, Jinwei Dong, Jihua Wu, Bo Li","doi":"10.5194/essd-14-3757-2022","DOIUrl":null,"url":null,"abstract":"Abstract. Data and knowledge of surface water bodies (SWB), including large lakes and\nreservoirs (surface water areas > 1 km2), are critical for\nthe management and sustainability of water resources. However, the existing\nglobal or national dam datasets have large georeferenced coordinate offsets\nfor many reservoirs, and some datasets have not reported reservoirs and\nlakes separately. In this study, we generated China's surface water bodies,\nLarge Dams, Reservoirs, and Lakes (China-LDRL) dataset by analyzing all\navailable Landsat imagery in 2019 (19 338 images) in Google Earth Engine and\nvery-high spatial resolution imagery in Google Earth Pro. There were\n∼ 3.52 × 106 yearlong SWB polygons in China for\n2019, only 0.01 × 106 of them (0.43 %) were of large size\n(> 1 km2). The areas of these large SWB polygons accounted\nfor 83.54 % of the total 214.92 × 103 km2 yearlong\nsurface water area (SWA) in China. We identified 2418 large dams, including\n624 off-stream dams and 1794 on-stream dams, 2194 large reservoirs (16.35 × 103 km2), and 3051 large lakes (73.38 × 103 km2). In general, most of the dams and reservoirs in China\nwere distributed in South China, East China, and Northeast China, whereas\nmost of lakes were located in West China, the lower Yangtze River basin, and\nNortheast China. The provision of the reliable, accurate China-LDRL dataset\non large reservoirs/dams and lakes will enhance our understanding of water\nresources management and water security in China. The China-LDRL dataset is\npublicly available at https://doi.org/10.6084/m9.figshare.16964656.v3 (Wang et al., 2021b).\n","PeriodicalId":48747,"journal":{"name":"Earth System Science Data","volume":" ","pages":""},"PeriodicalIF":11.2000,"publicationDate":"2022-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"12","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Earth System Science Data","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.5194/essd-14-3757-2022","RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 12

Abstract

Abstract. Data and knowledge of surface water bodies (SWB), including large lakes and reservoirs (surface water areas > 1 km2), are critical for the management and sustainability of water resources. However, the existing global or national dam datasets have large georeferenced coordinate offsets for many reservoirs, and some datasets have not reported reservoirs and lakes separately. In this study, we generated China's surface water bodies, Large Dams, Reservoirs, and Lakes (China-LDRL) dataset by analyzing all available Landsat imagery in 2019 (19 338 images) in Google Earth Engine and very-high spatial resolution imagery in Google Earth Pro. There were ∼ 3.52 × 106 yearlong SWB polygons in China for 2019, only 0.01 × 106 of them (0.43 %) were of large size (> 1 km2). The areas of these large SWB polygons accounted for 83.54 % of the total 214.92 × 103 km2 yearlong surface water area (SWA) in China. We identified 2418 large dams, including 624 off-stream dams and 1794 on-stream dams, 2194 large reservoirs (16.35 × 103 km2), and 3051 large lakes (73.38 × 103 km2). In general, most of the dams and reservoirs in China were distributed in South China, East China, and Northeast China, whereas most of lakes were located in West China, the lower Yangtze River basin, and Northeast China. The provision of the reliable, accurate China-LDRL dataset on large reservoirs/dams and lakes will enhance our understanding of water resources management and water security in China. The China-LDRL dataset is publicly available at https://doi.org/10.6084/m9.figshare.16964656.v3 (Wang et al., 2021b).

查看原文本刊更多论文

改进了中国地表水、大型水坝、水库和湖泊的地图

摘要地表水体(SWB)的数据和知识，包括大型湖泊和水库(地表水面积100平方公里)，对水资源的管理和可持续性至关重要。然而，现有的全球或国家水坝数据集对许多水库具有较大的地理参考坐标偏移，并且一些数据集没有单独报告水库和湖泊。在本研究中，我们通过分析谷歌Earth Engine中所有可用的2019年Landsat图像(19338张图像)和谷歌Earth Pro中的超高空间分辨率图像，生成了中国地表水体、大型水坝、水库和湖泊(China- ldrl)数据集。2019年中国全年有~ 3.52 × 106个SWB多边形，其中只有0.01 × 106个(0.43%)为大尺度(bb0.1 km2)。这些大的水面多边形面积占中国全年水面总面积(214.92 × 103 km2)的83.54%。共发现大型水坝2418座，其中下游水坝624座，上游水坝1794座;大型水库2194座(16.35 × 103 km2);大型湖泊3051座(73.38 × 103 km2)。总体而言，中国大部分的水坝和水库分布在华南、华东和东北地区，而大部分的湖泊分布在西部、长江下游和东北地区。提供可靠、准确的中国大型水库/水坝和湖泊ldrl数据将增强我们对中国水资源管理和水安全的认识。中国- ldrl数据集可在https://doi.org/10.6084/m9.figshare.16964656.v3公开获取(Wang et al.， 2021b)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Earth System Science Data GEOSCIENCES, MULTIDISCIPLINARYMETEOROLOGY-METEOROLOGY & ATMOSPHERIC SCIENCES

CiteScore

18.00

自引率

5.30%

发文量

231

审稿时长

35 weeks

期刊介绍： Earth System Science Data (ESSD) is an international, interdisciplinary journal that publishes articles on original research data in order to promote the reuse of high-quality data in the field of Earth system sciences. The journal welcomes submissions of original data or data collections that meet the required quality standards and have the potential to contribute to the goals of the journal. It includes sections dedicated to regular-length articles, brief communications (such as updates to existing data sets), commentaries, review articles, and special issues. ESSD is abstracted and indexed in several databases, including Science Citation Index Expanded, Current Contents/PCE, Scopus, ADS, CLOCKSS, CNKI, DOAJ, EBSCO, Gale/Cengage, GoOA (CAS), and Google Scholar, among others.