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Impacts of Eucalyptus (Eucalyptus exserta) Plantation on Soil Erosion in Guangdong Province, Southern China --A Kinetic Energy Approach.
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出 版 社:CATENA  
发表时间:2002  
台  站: 鼎湖山森林生态系统定位研究站  
作  者:Zhou Guoyi、Wei Xiaohua、Yan Junhua  
点 击 率:8778
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关 键 字:无  
摘  要:null  
关 键 字(英文):Kinetic energy; Sediment yield; Soil erosion; Eucalyptus plantation  
摘  要(英文):The relationship between the kinetic energy of waterdrops (rainfall and throughfall) and sediment yield (suspended solid (SS) and bed load (BL)) was studied in paired watersheds (one without vegetation and the other covered by an eucalyptus (Eucalyptus exserta) plantation) in Guangdong Province, Southern China. The results showed that there was a significant correlation between the kinetic energy of waterdrops and sediment yield in both watersheds. Sediment yield in the unvegetated watershed is significantly affected by the kinetic energy of atmospheric raindrops.Sediment yield in the plantation watershed, however, is significantly related to the kinetic energy of throughfall waterdrops, but not to the atmospheric rainfall intensity or the rainfall kinetic energy. When rainfall amount is greater than 5 mm, and their intensities are less than 20 mm h-1, the singlelayer eucalyptus plantations significantly increased the kinetic energy of waterdrops to the land surface, and consequently, accelerated soil erosion. However, these plantations do have positive impacts on the reduction of soil erosion for the rainfall events of larger intensities (particularly > 40mm h-1). Management implications of these results are discussed in the context of soil protection and ecosystem rehabilitation. D 2002 Elsevier Science B.V. All rights reserved.  
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Impacts of eucalyptus (Eucalyptus exserta) plantation on sediment yield in Guangdong Province, Southern China --a kinetic energy Approach.pdf

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