云南白水台泉华台地植物多样性与土壤因子关系研究  

Characters of Plant Diversity and Its Correlations with Soil Factors in Baishuitai Sinter Platform of Yunnan

作　　者：刘香玲[1] 何平荣[2] 麻维华[2] 孙海龙[1] 苏春田[2] 杨睿[1] 

机构地区：[1]中国科学院地球化学研究所环境地球化学国家重点实验室,贵州贵阳550002 [2]广西师范大学生命科学学院,广西桂林541004

出　　处：《农业现代化研究》2008年第3期372-375,共4页Research of Agricultural Modernization

基　　金：中国科学院“百人计划”中国科学院知识创新工程重要方向项目(编号:KZCX2-Yw-306);国家自然科学基金项目(批准号:40572107);国家社会公益项目(编号:2005DIB3J067)

摘　　要：探讨了云南白水台泉华台地植物多样性特征和5种不同植被类型的土壤理化性质。结果表明:灰背栎是群落的建群种和优势种,各样方的多样性指数和土壤理化性质均有明显差异:从以草本为主的裸露地到乔灌林,土壤含水量、有机质、全氮、水解氮等土壤养分指标总体上呈递增趋势,这表明植物多样性指数比较高的乔灌木林比其它植被类型能更好地改善土壤养分状况。并用逐步多元回归分析了不同样方中植物多样性指数与土壤因子之间的相关性,大多数多样性指数均受特定土壤因子的影响,结果也显示土壤酸碱度、全磷、速效磷、速效钾、全钙量和Ca/Mg,对白水台泉华台地群落多样性的维持和发育起重要作用。The characters of plant diversity and soil factors in five different vegetations on Baishuitai Sinter Platform of Yunnan were studied. The results showed that Quercus senescens was establish and predominancy genus of the community, obvious differences of the diversity indices and soil factors in different quadrat had been found; the water, organic matter contents, total- N,available-N of soil almost increased from quadrat of bare earth to arbor and shrub forest, it indicated that compared with other quadrats, arbor and shrub forest could improved primely the soil nutrient. The relationships between the plant diversity indices and the soil factors in different quadrat were analyzed by multiple regression analyse, most of the diversity indices were influenced by specifical soil factors, the results also showed soil acidity＇,totol-P,available-P,available-K,＇total capacity of calcium,calcium/magnesium had important function on maintaining and developing of the community diversity on Baishuitai Sinter Platform.

关 键 词：植物多样性 土壤因子 逐步回归分析 白水台泉华台地 

分 类 号：S792.39[农业科学—林木遗传育种] Q948.158[农业科学—林学]