通过对武夷山进行实地考察,选取了竹林(坳头),杉木林(桐木关西侧),茶园(挂墩)3个不同土地利用方式下的土壤剖面,并通过室内理化分析实验,测定剖面土壤的有机质总量、全氮含量及其机械组成,研究土地利用方式对其土壤养分的影响.通过实地考察和室内理化分析实验,得到以下主要结论:(1)竹林、杉木林和茶园的土壤机械组成以壤质土为主;(2)茶园、杉木林、竹林的土壤黏粒含量差别不大;(3)在A层中,不同土地利用方式下土壤有机质含量大小顺序为竹林〉茶园〉杉木林;而在B层中,土壤有机含量大小顺序为竹林〉杉木林〉茶园;(4)在A层中,不同土地利用下土壤全氮含量大小顺序为竹林〉茶园〉杉木林;而在B层中,土壤全氮含量大小顺序为竹林〉杉木林〉茶园;(5)土地利用方式影响着土壤的养分含量,不同的土地利用对土壤养分有着不同的影响.
This article studies the impact of land use pattern on soil nutrients based on the investigation of the bamboo( Ao Tou),the fir forest( the West of Tongmuguan ),the tea garden( gua dun )in Wuyi Mountain and experiments of physical-chemical analysis conducted in laboratory,which measures the total organic matter of soil profile,total nitrogen content and mechanical composition. The results show:1)the soil mechanical composi-tion of bamboo,fir forest and tea garden consist mainly of loamy soil;2)There is little difference in the soil clay content among the tea garden,the fir forest and the bamboo;and 3)In the A layer,the order of soil organic con-tent is:bamboo﹥ tea garden ﹥ fir forest;while in the B layer,the soil organic content order is bamboo﹥ fir for-est﹥ tea garden;(4)In the A layer ,the soil nitrogen content order is bamboo﹥ tea garden ﹥ fir forest;while in the B layer,the soil nitrogen content order is bamboo﹥fir forest﹥tea;(5)Land use patterns affects the nutrient content of the soil,different land use patterns on soil nutrients have different effects.