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天山云杉林生态系统健康评估中林下土壤指标筛选及综合指数的研究

作  者:
王千军;张毓涛;李吉玫;芦建江;王文栋;李翔
单  位:
新疆农业大学草环学院;新疆林业科学院森林生态研究所
关键词:
土壤理化因子;归一化;综合指数;聚类分析;郁闭度
摘  要:
在天山中部林区,采用样带法布设20m×20m的固定样地44个,通过监测各样地的土壤理化性质,运用综合指数公式H=∑(i=1 to n)WiHi对土壤理化因子进行归一化处理,计算各样地的土壤综合指数,并采用聚类法对其进行分类。研究结果表明:样地土壤综合指数得分范围在3.36~6.18,共分成4类,其中Ⅰ类样地7个,均值为5.89;Ⅱ类样地25个,均值为4.92;Ⅲ类样地11个,均值为4.32;Ⅳ类样地1个,值为3.36。天山云杉森林生态系统林下土壤总体表现为Ⅰ类和Ⅱ类,其中林分郁闭度为0.6的综合指数最大,林分郁闭度为1的综合指数最小。不同林分郁闭度的林下土壤综合指数表现顺序为:郁闭度为0.6>郁闭度为0.4>郁闭度为0.8>郁闭度为0.2>郁闭度为1。
译  名:
Comprehensive Study on the Forest Soil in the Forest Ecosystem Health
作  者:
Wang Qianjun et al.(College of Grassland and Environment Sciences,Xinjiang Agricultural University,Urumqi 830052,China)
关键词:
Physical and chemical of the soil;Normalization;Composite index;Classify;Densities
摘  要:
this paper chose Tian shan forest ecosystem research station as the research spot,and chose the Picea schrenkiana var.tian schanica(Rupr.)Chen et Fu as the research target,random selecte belt transect and bandwidth is 200m,as the 50m height for the interval set 20m×20m sample area,Total 44.Monitor the all of the charator of the physical and chemical of soil.use the form ula H=∑(i=1 to n)WiHi and SPSS to analysis all of the samples,calculate all of the sample’s composite index,and classify all of the samples.The composite index is the comprehensive of the physical and chemical of the soil,so the value of the composite index bigger the condition of the soil better.Analysis result show: all of the sample composite index is 3.36 ~ 6.18,use the SPSS to classify all of the samples,and all of samples can calssify to four types,in all of the types Ⅰtypes have 7,and the mean value is 5.89;Ⅱtypes have 24,and the mean value is 4.92;Ⅲ types have 11,and the mean value is 4.32;Ⅳ types have 1,and the mean value is 3.36;the total station of the soil show the Ⅰ,Ⅱ,the composite index show the biggest for the 0.6 of the densities,and the composite index show the minimum for the 1 of the densities.

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