新疆呼图壁种牛场天然草地类型数量分析研究  

RESEARCH ON THE QUANTITATIVE ANALYSIS OF THE NATURAL GRASSLAND TYPES IN HUTUBI COW BREEDING FARM

作　　者：何立新[1] 李卫军[1] 许鹏[1] 

机构地区：[1]新疆八一农学院草原系

出　　处：《植物生态学报》1995年第2期175-182,共8页Chinese Journal of Plant Ecology

基　　金：国家自然科学基金

摘　　要：呼图壁种牛场位于天山北麓冲积扇缘和古冲积平原，具有地带性的荒漠草地类型和隐域性的低地草甸草地类型。由于地形、潜水和土壤盐渍化的作用，影响了草地类型的形成和分布。本文采用二歧指示种分析（ＴＷＩＮＳＰＡＮ）和多元等级聚合分类法划分出１６个草地型；通过无偏对应分析（ＤＣＡ）揭示了研究区域草地类型的生态梯度，并用多元回归分析对其做了定量环境解释，结果表明该地区草地类型形成及其分布与土壤水分、盐分和质地密切相关。Hutubi Cow Breeding Farm is localed in the border of the alluvial fan and the paleo-alluvial plain of the northern slope of Tianshan Mountain,The zonal grassland type in this region is desert and the interzonal grassland typeis low land rneadow,The formation and distribution of grassland types aremainly controlled by topography,ground water and soil salinity.Using methods of TWINSPAN and polythetic hierarchical agglomerativeclassification, the grassland types are divided into 16 types and their hierar-chical classification system is formed. The ecological gradient in this regioncan be given by DCA ordination and the interpretation of its quantitative en-vironment can aslo be given after multivariate regression analysis. The resultshows that the grassland types and their distribution are strongly correlatedwith soil moisture,soil salinity and soil texture.

关 键 词：新疆 草地类型 天然草地 数量分析 

分 类 号：S812.3[农业科学—草业科学]