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Volume 21 Issue 6
Dec 2010
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Article Contents
Geissler Christian, Peter Kühn, Xuezheng Shi, Thomas Scholten. Estimation of Throughfall Erosivity in a Highly Diverse Forest Ecosystem Using Sand-Filled Splash Cups. Journal of Earth Science, 2010, 21(6): 897-900. doi: 10.1007/s12583-010-0132-y
Citation: Geissler Christian, Peter Kühn, Xuezheng Shi, Thomas Scholten. Estimation of Throughfall Erosivity in a Highly Diverse Forest Ecosystem Using Sand-Filled Splash Cups. Journal of Earth Science, 2010, 21(6): 897-900. doi: 10.1007/s12583-010-0132-y

Estimation of Throughfall Erosivity in a Highly Diverse Forest Ecosystem Using Sand-Filled Splash Cups

doi: 10.1007/s12583-010-0132-y
Funds:

This study was supported by the Deutsche Forschungsgemeinschaft (German Science Foundation) DFG FOR 891/1

National Natural Science Foundation of China 30710103907

National Natural Science Foundation of China 30930005

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  • Corresponding author: christian.geissler@uni-tuebingen.de
  • Received Date: 06 Jun 2010
  • Accepted Date: 10 Aug 2010
  • Publish Date: 01 Dec 2010
  • Sand-filled splash cups were used to study the erosive power of rainfall and throughfall in the humid subtropics of Southeast China. The splash cup measurements yielded precise and reproducible results under both open field conditions and forest vegetation. The splash cups were exposed to specific forest stands of different ages and to selected species (Schima superba, Castanopsis eyrei, Daphniphyllum oldhamii, Lithocarpus glaber) in the Gutianshan (古田山) National Nature Reserve (GNNR). The results of the measurements under forest vegetation show that the erosive power of throughfall drops to be 2.59 times higher compared to the open field. This accentuates the importance of shrub, herb and litter layers in forest ecosystems to protect the soil against erosion. Coalescing drops from leaves and branches (drips) are responsible for this notable gain in erosive power. Moreover, differences in sandloss between the investigated tree species (deciduous, evergreen) revealed that the erosion potential and the spatial heterogeneity of throughfall are species-specific. This highlights the importance of selecting specific species for afforestation projects considering the prevention of soil erosion.

     

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