摘要
以云南省不同海拔高度杜鹃群落土壤为研究对象.测定不同海拔高度（2 183～3 310m）杜鹃土壤有机质、全氮、全磷、全钾的含量及土壤脲酶、蔗糖酶、过氧化氢酶、蛋白酶的活性,并分析变化特征.结果表明：土壤养分含量随海拔的升高变化各不相同,各海拔高度间均表现出显著差异.同样土壤酶活性在不同海拔之间也存在明显的差异性,各种酶活性之间以蔗糖酶活性最高,其次为脲酶活性.通过相关性分析,海拔高度与土壤酶活性、土壤养分含量之间均呈极显著相关,土壤酶活性之间、土壤养分含量之间也有一定的相关性.说明不同海拔高度对杜鹃土壤酶活性与养分含量存在一定的影响.
The soil samples of Rhododendron community at different altitude （2 183～3 310 m） in Yunnan Province were used in the study.The content of soil organic matter,total nitrogen,total phosphorus and total potassium and the enzyme activity of urease,invertase,catalase and the protease were measured and analyzed.The results indicated that with the change of altitude,the nutrients of soil,soil enzyme activity were changed significantly.In addition,invertase enzyme activity was the highest,followed by urease enzyme activity.The correlation analysis indicated there was a significant correlation among enzyme activity,soil nutrient and the elevation gradient in various kinds of soils.Both soil enzyme activity and soil nutrient had a good correlation with the elevation gradients.It showed a certain relationship between soil enzyme activity and soil nutrients.
出处
《热带作物学报》
CSCD
北大核心
2013年第12期2363-2367,共5页
Chinese Journal of Tropical Crops
基金
国家自然科学基金(No.31170641)
中国科学院知识创新工程项目(No.KSCX2EWQ17
No.KSCX2EWZ15
No.XTBG-T02)
国家林业局西南风景园林工程技术研究中心
关键词
杜鹃
海拔
土壤养分
土壤酶活性
相关性分析
Rhododendron
Altitude
Soil nutrient
The enzymatic activity
Correlation analysis
