Carbon Storage and Distribution of the Mature Pinus massoniana Plantation in Northwest Guangxi

作     者：Zhenge HUANG Minyang XIE Mingbao WEI Bin HE Shaozhuang MO Gang ZHOU Ji LIANG 

作者机构：Guangxi Key Laboratory of Forest Ecology and ConservationForestry CollegeGuangxi UniversityNanning 530004China Shankou Forest Farm of Nandan CountyNandan 547200China 

出 版 物：《Agricultural Biotechnology》 (农业生物技术（英文版）)

年 卷 期：2019年第8卷第3期

页      面：141-144页

学科分类：09[农学] 

基　　金：Supported by Special Fund for Innovation-driven Development in Guangxi Zhuangzu Autonomous Region(GK AA17204087-11) Natural Science Foundation of China(31560206 31760201) 

主　　题：Pinus massoniana Mature forest Carbon content Carbon storage 

摘      要：[Objectives]This study was conducted to understand the carbon sequestration function of mature Pinus massoniana plantation in northwest Guangxi.[Methods]The carbon storage and distribution in a 26-year-old *** plantation were investigated through biomass harvesting in Shankou Forestry Farm of Nandan County,Guangxi Province.[Results]The average carbon content of *** was 489.3 g/kg,and the carbon contents of different organs ranked from large to small as pine needles trunks trunk bark roots *** carbon contents of understory shrub layer,herb layer and litter layer were 453.0,425.6 and 482.5 g/kg,*** soil organic carbon content in forestland varied from 6.20 to 32.15 g/kg,decreasing with the depth of the soil *** carbon storage of the mature *** plantation ecosystem was 232.13 t/hm^2,of which the tree layer,shrub layer,herb layer,litter layer and soil layer were 92.67,1.36,1.12 and 134.49 t/hm^2,respectively,which accounted for 39.92%,0.59%,0.48%,1.07% and 57.94% of the carbon storage of the whole ecosystem,*** annual net productivity of the tree layer of the mature *** plantation was 10.36 t/(hm^2·a),the annual net carbon sequestration was 5.41 t/(hm^2·a),and the annual net CO2 absorption was 19.83 t/(hm^2·a).[Conclusions]This study provides basic data and scientific basis for rational evaluation of the ecological benefits of *** plantation in this area.