应用生态学报2012，Vol.23Issue(11)：2961-2967,7.
岩溶区不同根系地下生境类型白栎叶片δ13C值的变化
Changes of foliar δ13 C value of Quercus fabric in different root underground habitat types in Karst area
摘要
Abstract
Selecting the dominant tree species Quercus fabric in three root underground habitat types (the dolomites of low oblique occurrence with multilayer space, middle oblique occurrence with multilayer space, and high oblique occurrence with multilayer space) in Karst area as test object, this paper studied the foliar δ13C value and its correlations with habitat soil conditions, and the plant water use efficiency. There existed remarkable differences in the foliar δ13C value of Q. fabric among the three habitat types, being decreased in the order of low oblique occurrence with multilayer space type (-26.35‰) > high oblique occurrence with multilayer space type (-26. 66‰) > middle oblique occurrence with multilayer space type ( -27. 07‰). Accordingly, the plant water use efficiency decreased in the same order. The foliar 813 C value had significant correlation with habitat soil moisture content, but less correlation with habitat soil elements contents. The δ13C value increased with the decrease of soil moisture content and soil fertility.关键词
岩溶区/根系地下生境类型/δ13C值/白栎Key words
Karst area/ root underground habitat type/ δ13C value/ Quercus fabric分类
农业科技引用本文复制引用
符裕红,黄宗胜,喻理飞..岩溶区不同根系地下生境类型白栎叶片δ13C值的变化[J].应用生态学报,2012,23(11):2961-2967,7.基金项目
"211工程"三期重点学科建设项目和"十二五"国家科技支撑计划项目(Kst200904,2011BAC02B02,2011BAC09B01,2012BAD22B01)资助. （Kst200904,2011BAC02B02,2011BAC09B01,2012BAD22B01）
