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| Study on Spatial Variety of Soil Moisture and Distribution of Vegetation and Biomass in Hegou Small Watershed |
| Wang Chunhong1,Wang Zhiguo2,Yi Tiemei1，Wang Guoshen1 |
| 1 Forestry college, Shanxi Agricultural University, 030801, Taigu, Shanxi; 2 Academy of hydraulic and hydroelectric, General Institute of Planning and Designing, Ministry of Water Resource, 100011, Beijing: China |
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Abstract The spatial variety of soil moisture, distribution of vegetation community and species and biomass in different physiognomies and land use types are analyzed based on soil moisture survey and vegetation investigation in Hegou small watershed in Shanxi province. The results showed that soil moisture of loess remnant ridge varies in a certain law from ridge top to gully foot. In the terms of soil moisture, that is descending from middle part of ridge to middle up part of gully slope and highest in the foot of slope and gully, ubac is higher than adret, farmland is higher than grassland, forestland is the lowest. The relation between the spatial distribution of soil moisture, vegetation distribution and biomass is positively correlative on the whole. Vegetation distribution and growth are controlled by suitability of vegetation to different physiognomy locations. The evaluation tables of vegetation suitability in different locations are put forward with comprehensive analysis, which can provide scientific basis for the vegetation restoration, watershed management and soil and water conservation.
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Received: 11 March 2004
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