鼎湖山森林演替序列水文过程中总有机碳(TOC)变化规律及其对土壤碳平衡的贡献.pdf

鼎湖山森林演替序列水文过程中总有机碳(TOC)变化规律及其对土壤碳平衡的贡献.pdf生态环境学报 2009, 18(6): 2300-2307
Ecology and Environmental Sciences E-mail: editor@
Dynamics of anic carbon (TOC) in hydrological
processes and its contributions to anic carbon pools
of three essional forest ecosystems in southern China

QIAO Yuna1, 2, YIN Guangcai1, 3, LUO Yan1, LIU Yan4
1. South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100049, China;
3. College of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China;
4. Guangxi Soil and Water Conservation Monitoring Section, Nanning 530023, China

Abstract: The dynamics of anic carbon (TOC) in hydrological processes are important for understanding carbon cycling in
forest ecosystems. TOC was monitored in precipitation, throughfall, stemflow, litter leachate and runoff in subtropical climax forest
ecosystem-monsoon evergreen broad-leaved forest (MBF), and its two essional forests of natural restoration-mixed Pinus mas-
sonniana/broad-leaved forest (PBF), and Pinus massoniana forest (PF) at Dinghushan Nature Reserve (DNR) in southern China for 3
years (from April, 2002 to May, 2005). The major results and conclusions are as follows: TOC concentrations and fluxes of through-
fall (DTF), stemflow, and litter leachate in PF were higher than those in MBF