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| Capacity of soil moisture conservation of different microhabitats under different mulching techniques in karst area |
| Li Anding1,2,Li Weijie2,Yang Rui1,Yu Lifei1 |
1.College of Forestry,Guizhou University,550025,Huaxi,Guizhou;2.Karst Resource Environment and Development Research Center of Guizhou Academy of
Sciences,550001,Guiyang:China |
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Abstract In this paper,the capacity of soil moisture conservation of different microhabitats under different mulching technology in Huajiang karst typical valley area was studied.The results showed that the soil moisture change of soil surface,stone gully and stone pit is almost same by litter mulching,stone mulching and plastic mulching,among which the stone pit has the highest soil moisture content,while the soil surface is the lowest.The soil moisture content of all soil layers were increased,but the increasing extent was different.A frequency of the water stress was decreased in a year.Effects of soil moisture conservation is better,and daily average soil water loss is less under different mulching,among which plastic mulching is best,while that of litter mulching and stone mulching were followed.But by afforestation on the spot,the results showed that the survival rate of litter mulching and stone mulching is higher than that of plastic mulching.So afforestation under plastic mulching should be further studied in karst typical valley area.
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Received: 13 January 2010
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