湘中丘陵区天然林大样地结构特征  

Study on the structure characteristics of natural forest plot of hilly area in central Hunan Province

作　　者：罗佳[1] 张波 张珉[1] 颜贝 肖童觉 林峰[1] 吴周旭 王景弟 LUO Jia;ZHANG Bo;ZHANG Min;YAN Bei;XIAO Tongjue;LIN Feng;WU Zhouxu;WANG Jingdi(Hunan Academy of Forestry,Changsha 410004,Hunan,China;Hunan Province Li County Forest Property Management Service Center,Changde 415500,Hunan,China;Central South University of Forestry and Technology,Changsha 410004,Hunan,China;Hunan Provincial Ecological Environment Monitoring Center,Changsha 410014,Hunan China;Forestry Bureau of Zhangjiajie City,Zhangjiajie 427000,Hunan,China)

机构地区：[1]湖南省林业科学院,湖南长沙410004 [2]湖南省澧县林权管理服务中心,湖南常德415500 [3]中南林业科技大学,湖南长沙410004 [4]湖南省生态环境监测中心,湖南长沙410014 [5]张家界市林业局,湖南张家界427000

出　　处：《湖南林业科技》2023年第4期37-44,共8页Hunan Forestry Science & Technology

基　　金：湖南省重点研发计划项目(2022SK2063);湖南省林业局项目“天然林大样地建设及监测”。

摘　　要：在湘中丘陵区湖南省青羊湖国有林场设立6 hm^(2)的天然林大样地,并全面调查和分析大样地的结构特征。结果表明:共定位、标记和调查林木18496株。整个大样地的乔木平均树高为7.71 m,平均胸径为9.69 cm,平均枝下高为3.46 m,平均冠幅为1.97 m,平均东西冠幅大于平均南北冠幅;树高排前3名的是枫香、湿地松和褐毛杜英,胸径排前3名的是湿地松、枫香和雷公鹅耳枥,冠幅排前3名的是枫香、香樟和湿地松。6 hm^(2)大样地内的木材总蓄积量为309.50 m^(3),单位面积木材蓄积量为51.58 m^(3);6 hm^(2)的大样地每年固碳量为19.05 t(包含1.50 t土壤碳),单位面积固碳量为3.18 t·hm^(-2)a^(-1)。研究结果可为今后开展全省天然林生态效益监测与评估提供技术支撑和数据支持。The 6 hm^(2)sample plot of natural forest plot was set up in Hunan Qingyanghu State-owned Forest Farm in the hilly area of central Hunan Province,and the structural characteristics of the sample plot were comprehensively investigated and analyzed.The results showed that 18496 trees to be investigated,marked and located;the average height of the trees in the entire plot was 7.71 m,the average diameter at breast height was 9.69 cm,the average height under branches was 3.46 m,and the average crown width was 1.97 m.The average east-west crown width was larger than the average north-south crown width;The top three trees of different tree species types were Liquidambar formosana,Pinus elliottii and Elaeocarpus duclouxii,the top three trees of DBH were P.elliottii,L.formosana and Carpinus viminea,and the top three trees of crown breadth were L.formosana,Cinnamomum camphora and P.elliottii;The bulk plot had a storage capacity of 309.50 m^(3),while the unit area of wood storage was 51.58 m^(3).The annual carbon sequestration was 19.05 tons(including 1.50 tons of soil carbon),and the carbon sequestration per unit area was 3.18 tons.The research results can provide technical and data supports for the future monitoring and evaluation of ecological benefits of natural forest in the province.

关 键 词：大样地 定位观测 调查 天然林 

分 类 号：S718.5[农业科学—林学]