内蒙古和青藏高原草原植物叶片与根系氮利用效率空间格局及影响因素
符义稳1,2,田大栓2,汪金松2,牛书丽2,3,赵垦田1,*(
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Patterns and affecting factors of nitrogen use efficiency of plant leaves and roots in Nei Mongol and Qinghai-Xizang Plateau grasslands
FU Yi-Wen1,2,TIAN Da-Shuan2,WANG Jin-Song2,NIU Shu-Li2,3,ZHAO Ken-Tian1,*()
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图2. 年平均气温和年降水量与草原植物叶片或根系氮利用效率之间的关系。n表示样本量。
Fig. 2. Relationships of leaf or root nitrogen use efficiency (NUE) with mean annual air temperature and mean annual precipitation. n represents the sample size of observations.
