南水北调中线工程水源区森林生态系统碳储量

Study on Forest Ecosystem Carbon Storage for Water Source Area of Middle Route of South-to-North Water Diversion Project

根据2012年河南省森林资源规划设计调查资料,建立不同优势树种生物量与蓄积量之间的回归模型或标准地资料,以树种含碳率作为生物量转换为碳储量的系数,对南水北调中线工程南阳水源区森林生态系统的碳储量进行估算。结果表明:南阳水源区森林生态系统碳储量7522.68万t,碳密度129.42 t·hm-2。其中森林土壤层碳储量6045.03万t、占总碳储量的80.36%,乔木层碳储量1018.30万t、占13.54%,森林下层植被和枯落物层碳储量为459.35万t、占6.10%;在各类型森林生态系统中,乔木林森林生态系统碳储量最多为6201.95万t、占82.4%。研究可为当地森林经营管理和生态环境改善提供参考。

Based on original forest resource inventory data of Henan Province in 2012 ,used regression equation between biomass and volume of various tree species, carboninduded reat in different tree species as the transferring coefficient from blomass to carbon stock, the forest ecosystem carbon storage in Nanyang water source area of middle route of south-to-north water diversion project is estimated. The results show that the total forest ecosystem carbon storage in Nanyang water source area is 75226800 t and the average carbon density of forest ecosystem is 129.42 t ~ hm-2 ,in which the carbon storage in woodland soil is 60450300 t, accounting for 80. 36% , the carbon storage of arbor layer is 10183000 t, accounting for 13.54% and the carbon storage of undergrowth vegetation and forest litters layer is 4593500 t, accounting for 6. 10%. The arbor ecosystem carbon storage is the most in different forest ecosystem,62019500 t, accounting for 82.40%.