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Evapotranspiration on Natural and Reclaimed Coral Islands in the South China Sea

文献类型：期刊论文

作者Han, Shengsheng1,2; Liu, Suxia1,2; Hu, Shi1; Song, Xianfang1,2; Mo, Xingguo1,2
刊名REMOTE SENSING
出版日期2021-02-01
卷号13期号:6页码:18
关键词evapotranspiration coral islands water balance VIP-RS model
DOI10.3390/rs13061110
通讯作者Liu, Suxia(liusx@igsnrr.ac.cn)
英文摘要Studies of evapotranspiration on remote tropical coral islands are important to explore and sustain scarce freshwater resources. However, there is a significant knowledge gap between research to evaluate evapotranspiration based on remote sensing methods and the influences of different land use types on water dynamics on reclaimed coral islands. This study applied the remote-sensing-based Vegetation Interfaces Processes (VIP-RS) model to estimate actual evapotranspiration (ETa) on Zhaoshu Island, Yongxing Island, and Yongshu Island in the South China Sea from 2016 to 2019. The results showed that the average annual ETa of Zhaoshu Island, Yongxing Island, and Yongshu Island was 685 mm, 530 mm, and 210 mm, respectively. Annual transpiration (E-c) and soil evaporation (E-s) exhibited similar patterns on the natural islands; however, E-s controlled the water consumption on the reclaimed islands. Water dynamics exhibited seasonal fluctuations due to the uneven distribution of precipitation (PRP). However, ETa of the natural islands was higher than PRP in the dry season, indicating vegetation has to absorb water from the groundwater to sustain growth. The results also agreed with the analysis of dominant driving factors based on partial correlation analysis, which demonstrated that the Normalized Difference Vegetation Index (NDVI) is the most important factor that influences ETa, while relative humidity (RH) controlled the bare land or sparsely vegetated areas on the reclaimed islands. The setting of different land use types showed that vegetation and built-up or hardened roads took control of evapotranspiration and rainwater collection, respectively, which play important roles in water dynamics on corals islands. The evaluation of ETa based on a remote-sensing-based model overcame the difficulty in fieldwork observation, which improves the certainty and accuracy at a spatial scale. In addition, it gave us a new reference to protect and manage scarce freshwater resources properly.
WOS关键词FRESH-WATER LENSES ; ATOLL ISLANDS ; CLIMATE ; MANAGEMENT ; EVAPORATION ; VEGETATION ; PACIFIC ; WHEAT ; HYDROGEOLOGY ; CONDUCTANCE
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDA13010303]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种英语
WOS记录号WOS:000651946400001
出版者MDPI
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/162760]  
专题中国科学院地理科学与资源研究所
通讯作者Liu, Suxia
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Sino Danish Ctr, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Han, Shengsheng,Liu, Suxia,Hu, Shi,et al. Evapotranspiration on Natural and Reclaimed Coral Islands in the South China Sea[J]. REMOTE SENSING,2021,13(6):18.
APA Han, Shengsheng,Liu, Suxia,Hu, Shi,Song, Xianfang,&Mo, Xingguo.(2021).Evapotranspiration on Natural and Reclaimed Coral Islands in the South China Sea.REMOTE SENSING,13(6),18.
MLA Han, Shengsheng,et al."Evapotranspiration on Natural and Reclaimed Coral Islands in the South China Sea".REMOTE SENSING 13.6(2021):18.

入库方式： OAI收割

来源：地理科学与资源研究所

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