摘要
竹林具有高效的固碳能力,在应对全球气候变化中扮演重要角色.然而,目前大尺度竹林碳储量估算误差大,导致竹林碳储量时空格局存在较大的不确定性.本研究以浙江省为例,耦合遥感数据和BIOME-BGC生态系统过程模型模拟1984—2014年浙江省竹林地上碳储量,并利用森林资源清查数据进行精度验证,分析浙江省竹林地上碳储量时空格局以及环境因子对竹林地上碳储量的影响.结果表明:模拟得到的竹林地上碳储量精度较高,平均相关系数(r)、均方根误差(RMSE)和相对偏差(rBIAS)分别达到了0.75、7.24 Mg C·hm^(-2)和-2.57 Mg C·hm^(-2),全省竹林地上碳储量总体呈上升趋势,碳密度在13.10～17.14 Mg C·hm^(-2),总碳储量在9.94～17.19 Tg C,其中,竹林地上碳储量高值区域主要分布在安吉、临安、龙游等竹产业发达地区.竹林地上碳储量的变化与温度、降水、辐射、CO_2浓度、大气N沉降5个环境因子显著相关,降水量和温度与碳储量的偏相关系数较大.
Bamboo forests have an efficient carbon sequestration capacity and play an important role in responding to global climate change.However,the current estimation of bamboo carbon storage has some errors,leading to uncertainty in the spatiotemporal pattern of bamboo forest carbon storage.This study simulated aboveground carbon storage of Zhejiang Province,China,during 1984-2014 based on the combination of an improved BIOME-BGC(biogeochemical cycles)model and remote sensing data,with the accuracy being verified with forest resource inventory data.The spatio-temporal distribution and environmental factors of aboveground carbon storage were analyzed.The results showed that the simulated carbon storage was accurate,with average correlation coefficient(r),root mean square error(RMSE)and relative bias(rBIAS)being 0.75,7.24 Mg C·hm-2 and-2.57 Mg C·hm-2,respectively.Generally,the aboveground carbon storage of bamboo forests in the whole province tended to increase from 1984 to 2014,the range of aboveground carbon density was 13.10-17.14 Mg C·hm-2,and that of the total aboveground carbon storage was between 9.94-17.19 Tg C.The high aboveground carbon storage of bamboo was mainly distributed in developed bamboo industry areas,such as Anji,Lin’an,and Longyou.The change of aboveground carbon storage in bamboo forest was significantly correlated with temperature,precipitation,radiation,CO2 concentration and nitrogen deposition,with higher partial correlation coefficients between precipitation and temperature and carbon storage.
作者
刘腾艳
毛方杰
李雪建
邢璐琪
董落凡
郑钧泷
张梦
杜华强
LIU Teng-yan;MAO Fang-jie;LI Xue-jian;XING Lu-qi;DONG Luo-fan;ZHENG Jun-long;ZHANG Meng;DU Hua-qiang(State Key Laboratory of Subtropical Silviculture/Zhejiang Province Key Laboratory of Carbon Cycling in Forest Ecosystems and Carbon Sequestration/School of Environmental and Resources Science,Zhejiang A&F University,Hangzhou 311300,China)
出处
《应用生态学报》
CAS
CSCD
北大核心
2019年第5期1743-1753,共11页
Chinese Journal of Applied Ecology
基金
浙江省与中国林业科学研究院省院合作林业科技项目(2017SY04)
国家自然科学基金项目(31670644)
亚热带森林培育国家重点实验室项目(ZY20180201)
浙江省竹资源与高效利用协同创新中心(S2017011)
浙江农林大学科研发展基金人才启动项目(2034020075)资助~~
关键词
竹林
地上碳储量
BIOME-BGC模型
时空模拟
环境因子
bamboo forest
aboveground carbon storage
BIOME-BGC model
spatiotemporal simulation
environmental factor
