武夷山挂墩茶园和竹杉林下山地黄壤可蚀性差异

The difference in Erodibility of Mountain Yellow Soil Between Tea Plantation and Moso Bamboo and Cunninghamia lanceolata Mixed Forests at Guadun in Wuyi Mountain

为明晰茶园、竹杉林2种植被发育下土壤可蚀性差异,以武夷山挂墩茶园、竹杉林2种植被下山地黄壤为研究对象,基于室内实验得出的土壤机械组成与有机质数据,运用EPIC模型计算土壤可蚀性K值。结果表明:(1)2种植被发育下黄壤有机质存在显著的差异,表现为茶园黄壤<竹杉林黄壤。(2)在机械组成方面,仅有Ah层茶园黄壤砂粒含量显著大于竹杉林黄壤,其余无显著的差异。(3)2种黄壤Ah层K值差异不大,Bs层差异显著,呈现茶园黄壤>竹杉林黄壤。

In order to clarify the difference in soil erodibility under the development of tea plantation and moso bamboo and Cunninghamia lanceolata mixed forests, the mountain yellow soil under the two kinds of vegetation of Wuyi Mountain was selected as the research object. Based on the soil mechanical composition and organic matter data obtained from laboratory experiments,EPIC was used The model calculates the soil erodibility K value. The results showed that:(1) There were significant differences in the organic matter of the yellow soil under the two types of vegetation development, which showed that the yellow soil of the tea plantation was less than the yellow soil of the bamboo and fir forest.(2) In terms of mechanical composition, only the sand content of the yellow soil of the tea plantation in the Ah layer was significantly greater than that of the yellow soil of the bamboo and fir forest, and the rest had no significant difference.(3) The K value in the Ah layer of the two yellow soils had little difference, but the difference in the Bs layer was significant.