摘要
收集整理1982—2019年马尾松林生物量文献数据,分析了包括生物量换算系数(BCEF)、生物量扩展系数(BEF)和根茎比(R)在内的马尾松林生物量估算系数及其影响因子,以期为准确估算马尾松林生物量提供科学依据。结果表明:BCEF、BEF和R的平均值分别为0.723±0.138 t·m^(-3)、1.390±0.184和0.167±0.024,地域之间存在差异;BCEF、BEF和R均随着林龄(r^(2)=0.329,0.430,0.315)和林分蓄积量(r^(2)=0.513,0.528,0.337)的增加而逐渐减小,并逐渐趋于稳定;BCEF、BEF和R均随着平均树高的增大先降低后增加,拟合精度分别为0.370、0.506和0.239;BCEF随着平均胸径的增大逐渐减小(r^(2)=0.306);BEF随着平均胸径增大先降低后增加(r^(2)=0.531);生物量估算系数与气候因子均无明显关系;R随着坡度(r^(2)=0.298),BCEF随着海拔(r^(2)=0.365)的增加先降后增。R随着海拔(r^(2)=0.277)的增加逐渐增大。马尾松生长过程中自然整枝使林分结构产生差异,坡度和海拔对光照、热量和水分产生影响,进而影响植物生长,从而林分结构和地形因子与生物量估算系数拟合度较高,在应用生物量估算系数估算马尾松生物量时应综合考虑林分结构和地形因素的影响。
To accurately estimate Masson pine forest biomass in China,we analyzed the estimation coefficients including the biomass conversion and expansion factor (BCEF),the biomass expansion factor (BEF),and the ratio of root to stem (R) with their influencing factors based on the data from related literature from 1982 to 2019.The results showed that the average values of BCEF,BEF and R were 0.723±0.138 t·m^(-3),1.390±0.184 and 0.167±0.024,respectively.BCEF,BEF and R all gradually decreased with increasing stand age (r^(2)=0.329,0.430 and0.315,respectively) and stand stock volume (r^(2)=0.513,0.528 and 0.337,respectively),and gradually tended to be stable.BCEF,BEF and R all decreased first and then increased with increasing average tree height,with a fitting accuracy of 0.370,0.506 and 0.239,respectively.BCEF decreased gradually with increasing average diameter at breast height (r^(2)=0.306).BEF decreased first and then increased with increasing average diameter at breast height (r^(2)=0.531).There was no relationship between biomass estimation coefficients and climatic factors.R increased with slope (r^(2)=0.298) and increased gradually with altitude (r^(2)=0.277),while BCEF decreased first and then increased with altitude (r^(2)=0.365).Natural pruning during the growth of Masson pine resulted in different stand structure.The slope and altitude would affect plant growth by affecting the availability of light,heat,and water.Hence,the stand structure and topographic factors had a higher degree of fitting with the biomass estimation coefficients.Therefore,the role of stand structure and topography should be considered when estimating the biomass of Masson pine by using biomass estimation coefficients.
作者
袁锋
陈灿
夏心慧
刘贺娜
李茂瑾
吴承祯
YUAN Feng;CHEN Can;XIA Xin-hui;LIU He-na;LI Mao-jin;WU Cheng-zhen(College of Forestry,Fujian Agriculture and Forestry University,Fuzhou 350002,China;Collegiate Key Lab of Forest-Ecosystem Process and Management in Fujian,Fuzhou 350002,China;Fujian Chihu State-owned Forest Shelter Farm,Huian 362100,Fujian,China;College of Ecology and Resource Engineering,Wuyi University,Nanping 354300,Fujian,China)
出处
《生态学杂志》
CAS
CSCD
北大核心
2021年第6期1557-1566,共10页
Chinese Journal of Ecology
基金
国家重点研发项目(2017YFD060130403)
福建省林业科技项目(闽林科便函[2018]26号)
福建省教育厅中青年教师教育科研项目(JT180134)
福建农林大学国际科技合作与交流项目(KXB16008A)资助。
关键词
马尾松
生物量估算系数
林分结构
气候
地形
Masson pine
biomass estimation coefficient
forest stand structure
climate
topography
