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- Title
Changes of foliar δ<sup>13</sup> C value of Quercus fabric in different root underground habitat types in Karst area.
- Authors
FU Yu-hong; HUANG Zong-sheng; YU Li-fei
- 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 δ13C 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.
- Subjects
CHINA; KARST; SOIL moisture; WATER supply; WATER use; RAINFALL
- Publication
Yingyong Shengtai Xuebao, 2012, Vol 23, Issue 11, p2961
- ISSN
1001-9332
- Publication type
Article