伊犁河谷沟壑区坡面尺度地形、植被与土壤性质的相互关系  

Correlation among Terrain,Vegetation and Soil Properties at Hillslope Scale Topography in Ili Valley

作　　者：李晓原[1] 张文太[2] 李建贵[1] 仲亚婷 张佩佩[2] 魏影[2] 

机构地区：[1]新疆农业大学林业研究所,乌鲁木齐830052 [2]新疆土壤与植物生态过程自治区重点实验室,新疆农业大学草业与环境科学学院,乌鲁木齐830052 [3]新疆农业大学林学与园艺学院,乌鲁木齐830052

出　　处：《新疆农业大学学报》2016年第6期477-482,共6页Journal of Xinjiang Agricultural University

基　　金：国家科技支撑计划项目(2014BAC15B03)

摘　　要：通过野外实地调查采样并结合室内实验,分析新疆伊犁河谷坡向与坡位、植被覆盖度、土壤含水量与有机质含量等之间的相互关系。结果表明:地形和土壤性质影响植被覆盖度,上、中、下坡位之间植被覆盖度存在明显的差异性(P<0.05),相关分析表明坡位之间植被覆盖度与有机质含量、黏粒呈极显著正相关(P<0.01)。地形和植被的相互关系影响有机质含量的分布,使得有机质含量在不同坡位之间存在明显的差异性(P<0.05),其与黏粒呈极显著正相关(P<0.01),而与砂粒和土壤可蚀性K值呈极显著负相关,植被对有机质含量与土壤机械组成也会产生影响。土壤可蚀性K值与植被覆盖度、有机质含量、土壤容重、砂粒、黏粒呈显著性相关(P<0.05),其受地形、植被与土壤性质三者的综合影响沿坡面从上至下逐渐变小。Correlation among aspect and slope position,vegetation coverage,soil moisture content,organic matter were analyzed through field survey sampling and laboratory experiment in Ili Valley in the hope of providing sustainable utilization of land resources and effective measurement of soil and water conservation.The results showed that there was obvious difference in vegetation coverage of upper,middle and lower positions under effects of terrain and soil properties（P 0.05）.And correlation analysis showed vegetation coverage,the content of organic matter and clay had extremely significant positive correlation in slope positions（P 0.01）.Distribution of organic matter content was influenced by correlation of terrain and vegetation,with obvious difference of content of organic matter in slope positions.The content of organic matter and clay had extremely significant positive correlation（P 0.05）,but extremely significant negative correlation with sand and soil erodibility factor K（P〈0.01）.Vegetation coverage also impacted the content of organic matter and soil mechanical composition.Soil erodibility factor K,vegetation coverage,the content of organic matter,soil bulk density,sand and clay were significantly correlated（P〈0.0 5）.Meanwhile,the integrated effects of terrain,vegetation and soil properties gradually decreased from top to bottom along the slope.

关 键 词：坡向 坡位 植被 土壤 相互关系 

分 类 号：S151.9[农业科学—土壤学]