Carbon Distribution of Main Vegetation Types of Mengzhai Watershed in South China Karst Canyon Area
A Carbon storage of different vegetation types base on a survey on the arbor,shrub and herb layer in Mengzhai watershed,Qinglong county of Guizhou,China,combing with survey on the biomass and soil organic mat-ter,We measured several vegetation layer and soil layer,analysised layer of Carbon density of the canyon karst,the plant type characteristics of Carbon density and distribution,found that Carbon density of upstream and midstream are higher than the downstream. The Carbon density of the steep slope at the top of is greater than the top of gentle slope,Carbon density of the middle steep slope less than central gentle slope. Furthermore,to steep section,the Carbon density of the top is higher than the bottom of the central. To gentle slope section,Carbon density of the bottom under than the top and central part of the slope. Carbon density of several vegetation layer between in 2. 01~64. 83 t/hm2 which in Mengzhai watershed. Comparing with other parts of the vegetation layer,Carbon density in our study area showed low biomass and low Carbon density. The soil Carbon density was higher than vegetation lay-ers which in 58. 16~154. 13 t/hm2 . Litter layer of Carbon deposits on the contribution of the whole ecosystem Car-bon deposits is not big,all less than 5%. The thin soil,gravel content in karst valley is the main cause of the lower Carbon density than other regions.
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万方数据
