北京林业大学学报2012，Vol.34Issue(6)：23-29,7.
内蒙古灌木叶性状关系及不同尺度的比较
Relationships among shrub leaf traits in Inner Mongolia and comparison in different spatial scales.
摘要
Abstract
Based on the sampling and measurement along a 1 100 km shrub-biome transect across the arid and semi-arid region in Inner Mongolia, northern China, we examined the relationships of leaf mass- and area-based leaf mass per area (LMA) , net photosynthetic rate, N and P content, and compared the leaf trait relationships in this study with shrub trait data across Chinese grassland and global scales. The main results were as follows : 1 ) In Inner Mongolia, LMA was significantly and negatively correlated with mass- based net photosynthetic rate, N and P content, and was positively related to area-based N and P content. Mass- or area-based, leaf net photosynthetic rate, N and P content were positively correlated with each other. 2) LMA, N and P content showed an isometric scaling relationship with each other, and area-based traits were more tightly related with each other than mass-based ones. The scaling relationships between leaf photosynthetic rate and LMA, N and P content were allometric, and mass- based traits were more tightly correlated than area-based traits. 3 ) Leaf traits showed stronger scaling relationships with increasing spatial scales, and the scaling exponents also revealed systematically change with increasing spatial scales. Our results strongly support that there is a global general scaling relationship among key functional leaf traits.关键词
叶性状/相关关系/内蒙古/灌木/空间尺度Key words
leaf traits/correlationship/Inner Mongolia/shrub/spatial scale分类
农业科技引用本文复制引用
刘超,武娴,王襄平,尹伟伦,张淑静..内蒙古灌木叶性状关系及不同尺度的比较[J].北京林业大学学报,2012,34(6):23-29,7.基金项目
“十二五”国家科技支撑计划课题（2011BAD38801）、高等学校博士学科点专项科研基金课题（20090014120002）、北京市教育委员会学科建设与研究生培养项目. （）
