干旱区生态环境知识资源中心(Arid): 内蒙古灌木叶性状关系及不同尺度的比较

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	内蒙古灌木叶性状关系及不同尺度的比较
其他题名	Relationships among shrub leaf traits in Inner Mongolia and comparison in different spatial scales
	刘超; 武娴; 王襄平; 尹伟伦; 张淑静
来源期刊	北京林业大学学报
ISSN	1000-1522
出版年	2012
卷号	34 期号:6 页码:23-29
中文摘要	为了探讨灌木叶片比叶质量、N、P含量、净光合速率等性状间的比例关系,在内蒙古干旱半干旱区约1100 km样线上进行了灌木的采样和测定,并同更大空间尺度的全国草地和全球生态系统进行了比较。结果表明: 1)内蒙地区灌木叶片比叶质量(LMA)与基于质量的净光合速率、N、P含量显著负相关,与基于面积的N、P含量正相关;叶片净光合速率、N、P含量三者之间显著正相关。2)叶片LMA、N、P含量之间为等速生长关系,且基于面积的性状间关系更加紧密;叶净光合速率与LMA、N、P含量三者呈异速生长关系,且基于质量的性状间关系更加紧密。3)灌木叶性状间的关系具有全球一致性,并且空间尺度越大,相关性越强,SMA回归斜率有规律的增加或减小。本文的结论支持存在一个全球统一的叶性状间的比例关系。
英文摘要	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 massbased 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.
中文关键词	叶性状 ; 相关关系 ; 内蒙古 ; 灌木 ; 空间尺度
英文关键词	leaf traits correlationship Inner Mongolia shrub spatial scale
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:4719848
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227710
作者单位	北京林业大学, 森林培育与保护教育部重点实验室;;林木育种国家工程实验室, 100083
推荐引用方式 GB/T 7714	刘超,武娴,王襄平,等. 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,2012,34(6):23-29.
APA	刘超,武娴,王襄平,尹伟伦,&张淑静.(2012).内蒙古灌木叶性状关系及不同尺度的比较.北京林业大学学报,34(6),23-29.
MLA	刘超,et al."内蒙古灌木叶性状关系及不同尺度的比较".北京林业大学学报 34.6(2012):23-29.