Variations in carbon isotope ratios of C3 plants and distribution of C4 plants along an altitudinal transect on the eastern slope of Mount Gongga

被引：80

作者：

Li JiaZhu ^{[2
]}

Wang GuoAn ^{[1
]}

Liu XianZhao ^{[2
]}

Han JiaMao ^{[3
]}

Liu Min ^{[4
]}

Liu XiaoJuan ^{[1
]}

机构：

[1] China Agr Univ, Coll Resources & Environm Sci, Key Lab Plant Soil Interact, Minist Educ, Beijing 100193, Peoples R China

[2] Ludong Univ, Coll Geog & Planning, Yantai 264025, Peoples R China

[3] Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China

[4] Peking Univ, MOE Lab Earth Surface Proc, Coll Environm Sci, Beijing 100871, Peoples R China

来源：

SCIENCE IN CHINA SERIES D-EARTH SCIENCES | 2009年 / 52卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Mount Gongga; carbon isotopic ratios; C-3/C-4; plants; C-4; distribution; altitude; RAINFALL GRADIENT; HERBACEOUS PLANTS; FOLIAR DELTA-C-13; ARID REGION; DISCRIMINATION; LEAF; DIOXIDE; GRASSES; GROWTH; SOIL;

D O I：

10.1007/s11430-009-0170-4

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Variations in carbon isotopic ratios (delta C-13) of C-3 plants and distribution of C-4 plants were investigated along an altitudinal transect on the eastern slope of Mount Gongga, and the environmental effects on them were discussed. It is shown that plants with C-4 photosynthetic pathway mainly occur at altitudes below 2100 m a.s.l., suggesting that the low summer temperature is responsible for the distributional pattern. In addition, delta C-13 of C-3 plants increases with elevation at the region above 2000 m a.s.l. with the characteristics of humid climate, and the increase rate in delta C-13 for C-3 plants is about 1.3%. per kilometer. Temperature determines the altitudinal trend of delta C-13.

引用

页码：1714 / 1723

页数：10

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