Improved maps of surface water bodies, large dams, reservoirs, and lakes in China
<p>Data and knowledge of surface water bodies (SWB), including large lakes and reservoirs (surface water areas <span class="inline-formula">></span> 1 km<span class="inline-formula"><sup>2</sup></span>), are critical for the manage...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2022-08-01
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| Series: | Earth System Science Data |
| Online Access: | https://essd.copernicus.org/articles/14/3757/2022/essd-14-3757-2022.pdf |
| _version_ | 1828433906057084928 |
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| author | X. Wang X. Wang X. Xiao Y. Qin J. Dong J. Wu B. Li B. Li |
| author_facet | X. Wang X. Wang X. Xiao Y. Qin J. Dong J. Wu B. Li B. Li |
| author_sort | X. Wang |
| collection | DOAJ |
| description | <p>Data and knowledge of surface water bodies (SWB), including large lakes and
reservoirs (surface water areas <span class="inline-formula">></span> 1 km<span class="inline-formula"><sup>2</sup></span>), 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
<span class="inline-formula">∼</span> 3.52 <span class="inline-formula">×</span> 10<span class="inline-formula"><sup>6</sup></span> yearlong SWB polygons in China for
2019, only 0.01 <span class="inline-formula">×</span> 10<span class="inline-formula"><sup>6</sup></span> of them (0.43 %) were of large size
(<span class="inline-formula">></span> 1 km<span class="inline-formula"><sup>2</sup></span>). The areas of these large SWB polygons accounted
for 83.54 % of the total 214.92 <span class="inline-formula">×</span> 10<span class="inline-formula"><sup>3</sup></span> km<span class="inline-formula"><sup>2</sup></span> 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 <span class="inline-formula">×</span> 10<span class="inline-formula"><sup>3</sup></span> km<span class="inline-formula"><sup>2</sup></span>), and 3051 large lakes (73.38 <span class="inline-formula">×</span> 10<span class="inline-formula"><sup>3</sup></span> km<span class="inline-formula"><sup>2</sup></span>). 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 <a href="https://doi.org/10.6084/m9.figshare.16964656.v3">https://doi.org/10.6084/m9.figshare.16964656.v3</a> (Wang et al., 2021b).</p> |
| first_indexed | 2024-12-10T18:41:20Z |
| format | Article |
| id | doaj.art-f422214c4a47429298d4a4000518f1e4 |
| institution | Directory Open Access Journal |
| issn | 1866-3508 1866-3516 |
| language | English |
| last_indexed | 2024-12-10T18:41:20Z |
| publishDate | 2022-08-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Earth System Science Data |
| spelling | doaj.art-f422214c4a47429298d4a4000518f1e42022-12-22T01:37:38ZengCopernicus PublicationsEarth System Science Data1866-35081866-35162022-08-01143757377110.5194/essd-14-3757-2022Improved maps of surface water bodies, large dams, reservoirs, and lakes in ChinaX. Wang0X. Wang1X. Xiao2Y. Qin3J. Dong4J. Wu5B. Li6B. Li7Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai 200438, ChinaDepartment of Microbiology and Plant Biology, Center for Earth Observation and Modeling, University of Oklahoma, Norman, OK 73019, USADepartment of Microbiology and Plant Biology, Center for Earth Observation and Modeling, University of Oklahoma, Norman, OK 73019, USADepartment of Microbiology and Plant Biology, Center for Earth Observation and Modeling, University of Oklahoma, Norman, OK 73019, USAKey Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, ChinaState Key Laboratory of Grassland Agro-Ecosystems and College of Ecology, Lanzhou University, Lanzhou, Gansu 730000, ChinaMinistry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai 200438, ChinaYunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology and Centre for Invasion Biology, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming, Yunnan 650504, China<p>Data and knowledge of surface water bodies (SWB), including large lakes and reservoirs (surface water areas <span class="inline-formula">></span> 1 km<span class="inline-formula"><sup>2</sup></span>), 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 <span class="inline-formula">∼</span> 3.52 <span class="inline-formula">×</span> 10<span class="inline-formula"><sup>6</sup></span> yearlong SWB polygons in China for 2019, only 0.01 <span class="inline-formula">×</span> 10<span class="inline-formula"><sup>6</sup></span> of them (0.43 %) were of large size (<span class="inline-formula">></span> 1 km<span class="inline-formula"><sup>2</sup></span>). The areas of these large SWB polygons accounted for 83.54 % of the total 214.92 <span class="inline-formula">×</span> 10<span class="inline-formula"><sup>3</sup></span> km<span class="inline-formula"><sup>2</sup></span> 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 <span class="inline-formula">×</span> 10<span class="inline-formula"><sup>3</sup></span> km<span class="inline-formula"><sup>2</sup></span>), and 3051 large lakes (73.38 <span class="inline-formula">×</span> 10<span class="inline-formula"><sup>3</sup></span> km<span class="inline-formula"><sup>2</sup></span>). 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 <a href="https://doi.org/10.6084/m9.figshare.16964656.v3">https://doi.org/10.6084/m9.figshare.16964656.v3</a> (Wang et al., 2021b).</p>https://essd.copernicus.org/articles/14/3757/2022/essd-14-3757-2022.pdf |
| spellingShingle | X. Wang X. Wang X. Xiao Y. Qin J. Dong J. Wu B. Li B. Li Improved maps of surface water bodies, large dams, reservoirs, and lakes in China Earth System Science Data |
| title | Improved maps of surface water bodies, large dams, reservoirs, and lakes in China |
| title_full | Improved maps of surface water bodies, large dams, reservoirs, and lakes in China |
| title_fullStr | Improved maps of surface water bodies, large dams, reservoirs, and lakes in China |
| title_full_unstemmed | Improved maps of surface water bodies, large dams, reservoirs, and lakes in China |
| title_short | Improved maps of surface water bodies, large dams, reservoirs, and lakes in China |
| title_sort | improved maps of surface water bodies large dams reservoirs and lakes in china |
| url | https://essd.copernicus.org/articles/14/3757/2022/essd-14-3757-2022.pdf |
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