Study on Spatial Distribution of Surface Water Resources in Lhasa Based on RS and GIS

2013 ◽  
Vol 368-370 ◽  
pp. 417-420
Author(s):  
Xia Xu
Keyword(s):  
Spatial Distribution ◽  
Surface Water ◽  
Water Resources ◽  
Distribution Characteristics ◽  
Vital Function ◽  
Surface Water Resources ◽  
Rs And Gis ◽  
Spatial Distribution Characteristics ◽  
Increasing Trend ◽  
Landscape Ecological

Surface water resources study has vital function for Lhasa and whole Tibet. TM images in 2000 and 2010, GIS and landscape ecological theory are applied to analyze the spatial distribution characteristics of Lhasas surface water resources. The results show: there are 6662 patches in 2000 and 6340 patches in 2010, which means there have disappeared 322 patches, while the area have increased 20.95km2. The lakes class is the main surface water resources with 41.11% in 2000 and 41.03% in 2010. Tibetan Plateau is very sensitive to global cliamte change, espectially in water resouces. The areas of ice and glaciers, forested swamps, shrub swamps have no change. While other kinds of classs area shows increasing trend, especially rivers area, which increased 12.20 km2.

The Study of Available Water Resources in Northern Shaanxi

2014 ◽  
Vol 580-583 ◽  
pp. 1906-1909
Author(s):  
Xi Jun Wu
Keyword(s):  
Economic Development ◽  
Surface Water ◽  
Water Resources ◽  
Basic Flow ◽  
Distribution Characteristics ◽  
Available Water ◽  
Surface Water Resources ◽  
Flood Discharge ◽  
Socio Economic Development ◽  
Northern Shaanxi

In order to alleviate the contradictions about water resources shortage and socio-economic development in Northern Shaanxi, the water resources and their availability were studied. Through use the method of surface water resources deducte river ecological basic flow and flood discharge, calculated the surface available water resources and total available water resources of Northern Shaanxi, summarized their distribution characteristics. Study result showed that the available water resources of Northern Shaanxi is low, only 1.6 billion m3, available rate is 40%, water resources and their availability principally distribute in Yulin.

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