摘要
通过总结主要环境因子对植物体δ13C值影响,认为大气CO2浓度增加时,植物体δ13C值会下降;光照增强,植物δ13C值增大;UV-B增强时,植物体的δ13C值降低;温度、水分条件与植物体δ13C值的关系,至今还没有形成一致的意见,作者认为可能与其研究区域、研究的植物种数量、种类、植物部分及叶片成熟度、采样时间的不同有关。
After summarizing the effects of the main environmental factors on the δ^13C values of plants, in this paper it is considered that the δ^13C values of plants are decreased with the increase of atmospheric CO2 concentration and UV-B but increased with the increase of illumination. There is no yet the agreement about the relationship between the δ^13C values of plants and the main environment factors including atmospheric conditions, air temperature, moisture （water use efficiency） and the altitude. It is considered that which may be related to the different selections in study areas, plant species and quantity, maturation degree of plant leaves, sampling time, etc. The environmental factors affecting the δ^13C values of plants are multiple and complicated. Therefore, it needs to be further lucubrated to effectively derive the information about the environmental and climate changes in the past by using the change of δ^13C values of plants. Moreover, the ideal parameters can be provided for studying the paleoenvironmental and paleoclimate changes by referring the related climatic parameters.
出处
《干旱区地理》
CSCD
北大核心
2005年第4期538-540,共3页
Arid Land Geography
基金
国家自然科学基金项目(40171094)资助.
关键词
环境因子
植物体δ^13C值
environment factor
δ^13C value of plant
illumination
