云南白水台泉华台地土壤理化性质初步研究

Preliminary Study on Physical and Chemical Properties of Soil in Baishuitai Sinter Platform of Northwestern Yunnan

对云南白水台泉华台地5种植被类型的土壤理化性质进行了研究,结果表明:从以草本为主的裸露地到乔灌木林,土壤含水量、有机质、全氮、水解氮等总体上呈增加趋势,土壤保肥、供肥能力加强,土壤自肥能力也加强;而受成土母质影响的pH、钙镁含量却无大的变化。相关分析表明,土壤含水量、有机质、全氮、水解氮呈正相关关系,而土壤全磷与pH,钙总量和全氮呈负相关关系。

Physical and chemical properties of soil in 5 different vegetations on Baishuitai Sinter platform were studied. Results indicated that water, organic matter content, total - N and available - N in soil almost increased from pattern of bare earth to forest ; the fertility and nutrients of soil enhanced ; but pH, Ca and Mg content did not change greatly ; correlation analysis showed the correlation of water, organic matter content, total -N and available -N in soil was positive, while total -P and pH, total -Ca and total -N was negative.