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《Journal of Anhui Agricultural Sciences》 2009-07
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Research on the Runoff Characteristics of Small Watershed under the Reafforestation Patterns in Northwest Guangxi

LI Bao-ping et al(Forestry College,Guangxi University,Nanning,Guangxi 530005)  
The amount of surface runoff in the mode of returning farmland to forest in Northwest Guangxi was surveyed and studied.And the change laws of different types of surface runoff were found,which could provide the basis for returning farmland to forest and choose the more effective types of returning farmland to forest to speed up the recovery of the ecological environment in the region.The results showed the surface runoff had relationship with physical and chemical properties of soil,as well as temperature.The monthly surface runoff had the relationship with the average rainfall in the month.The average annual surface runoff in three three sample plots were as follows:Camptotheca acuminata plantation(2.52 mm)corn(2.17 mm)Camptotheca acuminata+ D.minor(McClure)Chia et H.L.Fung plantation(0.84 mm).The results indicated that the amount of surface runoff in sample plot of Camptotheca Acuminata and D.minor(McClure)Chia et H.L.Fung was less,its water retaining effect was better than that of corn sample plots.So it was the better reafforestation patterns.The surface runoff and rainfall amount of different vegetation types showed a certain linear relationship.The overall trend was that the surface runoff increased with the increasing of rainfall,with a positive correlation.But they had no direct proportion relationship and their correlativity was not significant.
【Fund】: 广西退耕还林工程建设效益监测项目(AB180102)
【CateGory Index】: S715
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