放牧对典型草原羊草形态特征及土壤理化性质的影响  

THE EFFECTS OF GRAZING ON THE MORPHOLOGICAL CHARACTERISTICS OF LEYMUS CHINENSIS AND SOIL PHYSICAL AND CHEMICAL PROPERTIES IN TYPICAL GRASSLAND

作　　者：乌尼尔[1] 海棠[1] 

机构地区：[1]内蒙古农业大学生态环境学院,呼和浩特010019

出　　处：《内蒙古农业大学学报（自然科学版）》2015年第4期71-76,共6页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：国家自然基金项目(DD41061026);中农合作项目(ZN201005)

摘　　要：研究放牧利用对典型草原羊草植株形态特征及土壤理化性质的影响,结果表明:放牧影响典型草原羊草植株形态特征及地上、地下生物量,围栏区羊草植株高度、叶片长度、宽度、每穗小穗数及羊草地上、地下生物量都显著高于放牧区,同时放牧影响羊草高度、叶片长度、宽度、每穗小穗数的变幅,放牧区羊草形态特征的变异系数低于围栏区;放牧影响土壤速效钾含量,放牧区、围栏区土壤的有机碳、速效氮、有效磷、速效钾和p H值与羊草植株各器官指标之间都呈正相关关系。The Research of grazing impact on the morphological characteristics of Leymus chinensis and soil physical and chemical properties in Typical grassland,the results showed that： The effects of Grazing on Leymus chinensis morphology and above ground,below ground biomass,Leymus chiinensis height,leaf length,width,number of spikelets per spike and chinensis above ground and below ground biomass in enclosed area were significantly higher than grazing area,meanwhile grazing impact on Leymus height,leaf length,width,number of spikelets per spike in range,Leymus morphological variation coefficient in Grazing area is lower than the enclosed area; The effects of Grazing on soil potassium content,L. chiinensis various organs of indicators is a positive correlation between soil organic carbon,available nitrogen,phosphorus,potassium and p H in Grazing area,Enclosed area.

关 键 词：典型草原 羊草 放牧 土壤理化性质 

分 类 号：S812.29[农业科学—草业科学]