期刊论文

中文

华中农业大学学报

1000-2421

2016

35

3

66-71

10.13300/j.cnki.hnlkxb.2016.03.011

国家林业软科学研究项目

本校为第一机构

通过测定洞庭湖湿地3种主要植被类型的生物量及其土壤CO_2和CH_4排放速率,研究湿地3种植被类型生态系统中大气、植物、土壤之间的碳循环过程。结果表明:草丛植被、乔木林植被和水生植被的大气碳流量分别是6.02、6.00、2.01 t/(hm~2·a),植物层流向土壤的碳流量分别是2.21、1.04、0.73 t/(hm~2·a);土壤流向大气的碳流量分别是2.36、2.14、1.29 t/(hm~2·a),3种植被类型生态系统均表现为碳汇,草丛植被、乔木林植被、水生植被净系统生产力分别为5.87、4.90、1.45 t/(hm~2·a)。

The plant biomass,soil CO2 and ell4 emission rates of wetland were determined and used to analyze the carbon cycling between the atmosphere, plants and soil of three wetland plants ecosystems in Dongting Lake.The results showed that the air traffic flow vegetation carbon of herbs, trees and aquat- ic plant systems was 6.02,6.00 and 2.01 t/（hm2 · a）.The plant layer carbon flux to the soil was 2.21, 1.04 and 0.73 t/（hm2 · a）.The soil carbon flux to the atmosphere was 2.36,2.14 and 1.29 t/（hm2 · a）. There was carbon sink function in the c...