期刊
BASIC AND APPLIED ECOLOGY
卷 15, 期 2, 页码 122-132出版社
ELSEVIER GMBH
DOI: 10.1016/j.baae.2014.01.003
关键词
Leaf epidermal cell; Stomatal index; CO2 partial pressure; Chinese grasslands; Tibetan Plateau; Inner Mongolia
类别
资金
- National Natural Science Foundation of China [31025005, 31021001]
- Major State Basic Research Development Program of China [201.003950602]
We aimed to disentangle he influence of environmental variables on the spatial patterns in stomatal occurrence and stomatal traits. We surveyed the stomatal occurrence and the stomatal length (SL), density (SD) and index (SE) of 99 species in 150 grassland sites on the Tibetan and Inner Mongolian Plateau to explore their spatial patterns and evaluate the influence of climate. Of all species studied, two thirds were amphistomatous. The species from the Tibetan Plateau had larger but fewer stomata than those from Inner Mongolia. Among the climate factors examined, temperature and insolation affected SD, SI and SL, whereas the CO2 partial pressure and the relative humidity affected SD. The climatic variables showed similar effects on the spatial variation of the adaxial and abaxial stomatal traits. We conclude that the low temperature and high insolation at high altitudes may be responsible for the larger and fewer stomata in plants on the Tibetan Plateau, The stomatal parameters that are presented here can be used to model. The gas exchanges at the ecosystem scale.
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