Preliminary analysis of spatiotemporal pattern of global land surface water
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- 作者：Xin Cao (1)
Jun Chen (2)
LiJun Chen (2)
AnPing Liao (2)
FangDi Sun (3)
Yang Li (1)
Lei Li (4)
ZhongHui Lin (5)
ZhiGuo Pang (6)
Jin Chen (1)
ChaoYing He (2)
Shu Peng (2) - 关键词：global land surface water ; water area ; water ratio ; spatial distribution pattern ; fluctuation
- 刊名：Science China Earth Sciences
- 出版年：2014
- 出版时间：October 2014
- 年：2014
- 卷：57
- 期：10
- 页码：2330-2339
- 全文大小：1,627 KB
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Jun Chen (2)
LiJun Chen (2)
AnPing Liao (2)
FangDi Sun (3)
Yang Li (1)
Lei Li (4)
ZhongHui Lin (5)
ZhiGuo Pang (6)
Jin Chen (1)
ChaoYing He (2)
Shu Peng (2)
1. State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, 100875, China
2. National Geomatics Center of China, Beijing, 100830, China
3. International Institute for Earth System Science, Nanjing University, Nanjing, 210093, China
4. College of GeoExploration Science and Technology, Jilin University, Changchun, 130026, China
5. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
6. China Institute of Water Resources and Hydropower Research, Beijing, 100038, China - ISSN：1869-1897
文摘
Land surface water (LSW) is one of the most important resources for human survival and development, and it is also a main component of global water recycling. A full understanding of the spatial distribution of land surface water and a continuous measuring of its dynamics can support to diagnose the global ecosystem and environment. Based on the Global Land 30-water 2000 and Global Land 30-water 2010 products, this research analyzed the spatial distribution pattern and temporal fluctuation of land surface water under scale-levels of global, latitude and longitude, continents, and climate zones. The Global Land 30-water products were corrected the temporal inconsistency of original remotely sensed data using MODIS time-series data, and then calculated the indices such as water area, water ration and coefficient of spatial variation for further analysis. Results show that total water area of land surface is about 3.68 million km2 (2010), and occupies 2.73% of land area. The spatial distribution of land surface water is extremely uneven and is gathered mainly in mid- to high-latitude area of the Northern Hemisphere and tropic area. The comparison of water ratio between 2000 and 2010 indicates the overall fluctuation is small but spatially differentiated. The Global Land 30-water products and the statistics provided the fundamental information for analyzing the spatial distribution pattern and temporal fluctuation of land surface water and diagnosing the global ecosystem and environment.