武夷山风景区土壤有机质及全氮含量研究

Study on Soil Organic Matter and Total Nitrogen Content of Wuyi Mountain Scenery Spot

分析武夷山风景区2008-2010年3年期间土壤有机质和全氮含量的空间变异特征,分析植被分布格局和海拔与土壤有机质和全氮的关系。结果表明,①武夷山风景区表层土壤有机质和全氮含量总体呈现随海拔升高而上升的趋势,气候和植被类型的综合作用决定了有机质和氮素的空间分布。②土壤有机质、全氮在0～20 cm、20～40 cm、40～60 cm土层具有空间相关性。土壤深度与有机质含量和全氮含量呈现负相关,0～20 cm土层有机质含量占0～60 cm土层有机质含量的40%以上,甚至可高达66.33%。③从整体上看,3年间土壤有机质、全氮含量基本上呈现不变的趋势,表明武夷山景区在近几年开发旅游过程中对土壤有机质和全氮含量保持较好。

The spatial variability characteristics of soil organic matter and total nitrogen content of Wuyi mountain scenery spot in 2008～2010 as well as the relationship between distribution pattern of vegetation and altitude and soil organic matter and total nitrogen were analyzed.The results showed that firstly,surface soil organic matter and total nitrogen content increased with the increase of altitude.And the spatial distribution of soil organic matter and total nitrogen content was determined by comprehensive function of climate and vegetation.Secondly,there was spatial correlativity for soil organic matter and total nitrogen in 0～20 cm,20～40 cm,40～60 cm soil layers.The level of soil depth and content of organic matter and total nitrogen was negatively correlated.The organic matter in 0～20 cm soil level accounted for more than 40% organic matter in 0～60 cm soil level,even up to 66.33%.Thirdly,the content of soil organic matter and total nitrogen in Wuyi mountain scenery spot was generally stable,showing that soil organic matter and total nitrogen was kept well during tourism development.