Re-estimating the changes and ranges of forest biomass carbon in China during the past 40 years

Re-estimating the changes and ranges of forest biomass carbon in China during the past 40 years

Xiaolu Zhou; Xiangdong Lei; Caixia Liu; Huabing Huang; Carl Zhou; Changhui Peng

【期刊名称】《森林生态系统：英文版》 【年(卷),期】2019(006)004

【摘要】Background: In recent decades the future of global forests has been a matter of increasing concern, particularly in relation to the threat of forest ecosystem responses under potential climate change. To the future predictions of these responses, the current forest biomass carbon storage(FCS) should first be clarified as much as possible,especially at national scales. However, few studies have introduced how to verify an FCS estimate by delimiting the reasonable ranges. This paper addresses an estimation of national FCS and its verification using two-step process to narrow the uncertainty. Our study focuses on a methodology for reducing the uncertainty resulted by converting from growing stock volume to above-and below-ground biomass(AB biomass), so as to eliminate the significant bias in national scale estimations.Methods: We recommend splitting the estimation into two parts, one part for stem and the other part for AB biomass to preclude possible significant bias. Our method estimates the stem biomass from volume and wood density(WD), and converts the AB biomass from stem biomass by using allometric relationships.Results: Based on the presented two-step

process, the estimation of China’s FCS is performed as an example to explicate how to infer the ranges of national FCS. The experimental results demonstrate a national FCS estimation within the reasonable ranges(relative errors: + 4.46% and-4.44%), e.g., 5.6–6.1 PgC for China’s forest ecosystem at the beginning of the 2010 s. These ranges are less than 0.52 PgC for confirming each FCS estimate of different periods during the last 40 years. In addition, our results suggest the upper-limits by specifying a highly impractical value of WD(0.7 t·m-3) on the national scale. As a control reference, this value decides what estimate is impossible to achieve for the FCS estimates.Conclusions: Presented methodological analysis highlights the possibility to determine a range that the true value could be located in. The two-step process will help to verify national FCS and also to reduce uncertainty in related studies. While the true value of national FCS is immeasurable, our work should motivate future studies that explore new estimations to approach the true value by narrowing the uncertainty in FCS estimations on national and global scales. 【总页数】18页(P.396-413)

【关键词】Allometric equation; Forest carbon; Stem-biomass proportion; Volume-derived method; Wood density

【作者】Xiaolu Zhou; Xiangdong Lei; Caixia Liu; Huabing Huang; Carl Zhou; Changhui Peng

【作者单位】Research Center for Ecological Forecasting and Global Change Northwest A&F University Yangling 712100 China; Ecological Modeling and Carbon Science Department of Biology Science University of Quebec at Montreal Montreal QC H3C 3P8 Canada; Institute of Forest Resource Information Techniques Chinese Academy of Forestry Beijing 100091 China; State Key Laboratory of Remote Sensing Science Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences Beijing 100101 China; Faculty of Health Sciences University of Ottawa Ottawa ON K1N 6N5 Canada. 【正文语种】中文 【中图分类】TP2 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_forest-ecosystems_thesis/0201278206826.html 【相关文献】

1.Re-estimating the changes and ranges of forest biomass carbon in China during the past 40 years [J], Xiaolu Zhou; Xiangdong Lei; Caixia Liu; Huabing Huang; Carl Zhou; Changhui Peng

2.Forest biomass carbon storage from multiple inventories over the past 30 years in Gansu Province, China: implications from the age structure of major forest types [J], Jinhong Guan; Huanshui Zhou; Lei Deng; Jianguo Zhang; Sheng Du

3.Biomass carbon stocks in China’s forests between 2000 and 2050:A prediction based on forest biomass-age relationships [J],

4.Estimating and mapping forest biomass in northeast China using joint forest resources inventory and remote sensing data [J], Xinchuang Wang; Shidong Wang; Limin Dai

5.Carbon Dynamics in Woody Biomass of Forest Ecosystem in China with Forest Management Practices under Future Climate Change and Rising CO2 Concentration [J], ZHOU Lei; WANG Shaoqiang; Georg KINDERMANN; YU Guirui; HUANG Mei; Robert MICKLER; Florian KRAXNER

以上内容为文献基本信息，获取文献全文请下载