[1]孔 蕊,张增信,张凤英,等.长江流域森林碳储量的时空变化及其驱动因素分析[J].水土保持研究,2020,27(04):60-66.
　KONG Rui,ZHANG Zengxin,ZHANG Fengying,et al.Spatial and Temporal Dynamics of Forest Carbon Storage and Its Driving Factors in the Yangtze River Basin[J].Research of Soil and Water Conservation,2020,27(04):60-66.
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长江流域森林碳储量的时空变化及其驱动因素分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 27 期数: 2020年04期 页码: 60-66 栏目: 目次 出版日期: 2020-06-20
Title:
Spatial and Temporal Dynamics of Forest Carbon Storage and Its Driving Factors in the Yangtze River Basin
文章编号:
1005-3409(2020)04-0060-07
作者:
孔 蕊1, 张增信1,2, 张凤英1, 田佳西1, 朱 斌1, 朱 敏1, 王益明2
(1.南京林业大学 生物与环境学院 南方现代林业协同创新中心, 南京210037; 2.河海大学 水文水资源学院 水文水资源与水利工程国家重点实验室, 南京 210098)
Author(s):
KONG Rui1, ZHANG Zengxin1,2, ZHANG Fengying1, TIAN Jiaxi1, ZHU Bin1, ZHU Min1, WANG Yiming2
(1.Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; 2.State Key Laboratory of Hydrology-Water Resources and Hydraulics Engineering, College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China)
关键词:
森林;  地上碳储量;  气候变化;  生态工程;  长江流域
Keywords:
forest;  aboveground biomass carbon;  climate change;  ecological engineering;  Yangtze River basin
分类号:
S719
文献标志码:
A
摘要:
为了评估森林碳储量在全球碳循环中的重要作用,基于1993—2012年遥感估算和LPJ(Lund-Potsdam-Jena)模型模拟的植被碳储量数据,使用简单线性回归和相关性分析的方法,研究了长江流域森林地上碳储量(Aboveground Biomass Carbon,ABC)的时空分布特征及其驱动因素。结果表明:(1)近20年来,遥感估算的长江流域森林地上碳储量呈显著增长趋势,森林碳库从1993年的2 563.91 Tg C增加到2012年的2 893.17 Tg C,增长率为12.84%。嘉陵江流域和汉江流域森林ABC值较高,长江流域西部山区较低;(2)长江流域森林ABC对气候变化比较敏感。总体来看,长江流域森林ABC与温度呈正相关关系,但与降水呈负相关关系;(3)遥感估算的森林碳库增长率由1993—2000年的3.15%提高到2001—2012年的8.01%,但LPJ模型模拟的森林碳库从1993年的4 159.06 Tg C增加到2012年的4 210.88 Tg C,增长率仅为1.25%,明显低于遥感估算的森林碳库。长江流域重大生态工程实施可能是引起2000年后长江流域森林地上碳储量显著增加的主要因素之一,表明重大生态工程实施有助于加快中国植被变绿的速度。
Abstract:
Forest carbon stocks have an important role in the global carbon budget. Based on the data of aboveground biomass carbon(ABC)from 1993 to 2012 obtained by satellite and LPJ(Lund-Potsdam-Jena)Dynamic Global Vegetation model, the spatial and temporal distribution of forest carbon storage was studied to further assess the impacts of the climate change and major ecological engineering on the forest ABC in the Yangtze River basin using the methods of simple linear regression and pearson correlation coefficients. The results showed that:(1)in general, the forest ABC increased obviously in the Yangtze River basin during the past 20 years, and the ABC rose from 2 563.91 Tg C in 1993 to 2 893.17 Tg C in 2012, with a growth rate of 12.84%, the higher ABC value could be found in the Jialing River basin and Hanjiang River basin, while the lower forest ABC appeared in the western mountainous area of the Yangtze River basin;(2)the forest ABC was positively correlated to the changes of temperature whereas it was negatively correlated to the precipitation in the Yangtze River basin;(3)the satellite data showed that the forest ABC growth rate had accelerated from 3.15% in the period 1993—2000 to 8.01% in the period 2001—2012; however, it rose from 4 159.06 Tg C in 1993 to 4 210.88 Tg C in 2012, with a growth rate of only 1.25% by using LPJ model. The implementation of ecological engineering might be the main reason for the rapid increase of forest ABC after the year 2000 in the Yangtze River basin. This study suggested that the ecological projects might contribute to the accelerated greening trend and highlighted the pivotal role of subtropical forest ABC in the carbon budget in China.

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备注/Memo

收稿日期:2019-08-30 修回日期:2019-09-18
资助项目:国家重点研发计划(2019YFC0409004); 国家自然科学基金(41971025)
第一作者:孔蕊(1993—),女,河南洛阳人,硕士研究生,研究方向为生态学。E-mail:kongrui@njfu.edu.cn
通信作者:张增信(1977—),男,山东青岛人,教授,博导,主要从事气候变化和生态水文研究。E-mail:nfuzhang@163.com

更新日期/Last Update: 2020-07-09