Assessment on forest carbon sequestration in the Three-North Shelterbelt Program region, China
Assessment on forest carbon sequestration in the Three-North Shelterbelt Program region, China
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中国三北防护林地区森林碳汇评估
DOI：
10.1016/j.jclepro.2018.12.296
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发表时间：
2019-04-01
影响因子：
11.1
通讯作者：
Qi, Wei
中科院分区：
文献类型：
--
作者：
Chu, Xi;Zhan, Jinyan;Qi, Wei
森林生态系统是陆地生态系统的主要组成部分，因为它们提供各种重要的生态系统服务，特别是通过碳固存来调节气候。三北防护林工程是中国大规模生态建设的先驱，自1978年以来推动了大规模的植树造林和森林动态。定量分析TNSP区域森林类型景观的固碳能力及其经济价值，对于更好地了解森林固碳能力，提供合理的森林管理方案具有重要意义。因此，基于1990-2015年的空间数据集，利用InVEST模型对TNSP地区的森林碳汇进行了评估。结果表明，森林具有较强的固碳能力。总固碳量呈波动趋势，总体呈下降趋势，1990-2015年减碳率为1.92%。各碳库的固碳量（地上生物量、地下生物量、土壤和死有机质）也略有下降，变化主要发生在东北北部和华北中部东南部。此外，从货币角度来看，碳封存的经济价值反映了TNSP值得实施，以少量的投资换取大量的碳封存效益。这项工作为更准确地计算森林碳汇提供了最新的尝试，量化了森林生态系统碳汇的经济价值，这将为TNSP地区以及其他类似的再造林地区的相关研究提供基线参考。(C) 2019 Elsevier Ltd.版权所有。
Forest ecosystems are a major component of the terrestrial ecosystems as they provide a variety of important ecosystem services, especially climate regulation via carbon sequestration. The Three-North Shelterbelt Program (TNSP), a pioneer for China's large-scale ecological construction, has promoted massive afforestation and forest dynamics since 1978. Quantitative analysis of carbon sequestration and its economic value of sub-type forest landscapes in the TNSP region is crucial for better understanding the capacity of forest carbon sequestration and providing reasonable forest management. Therefore, we assess the forest carbon sequestration in the TNSP region using the InVEST model based on spatial datasets during 1990-2015. Our results showed that forests in the TNSP region had strong carbon sequestration capacity. Total carbon sequestration fluctuated and overall showed a decreasing trend, with a reduction rate of 1.92% during the period of 1990-2015. The carbon sequestration of each carbon pool (namely aboveground biomass, belowground biomass, soil, and dead organic matter) also decreased slightly and the changes mainly happened in the north of northeastern China and along the southeast of central north China. Additionally, in monetary terms, the economic value of carbon sequestration reflected that the TNSP was worth implementing, with a small amount of investment in exchange for large carbon sequestration benefits. This work provides an up-to-date attempt to calculate carbon sequestration of forest more accurately, quantify economic values of carbon sequestration for forest ecosystems, which will give a baseline reference for related studies in the TNSP region, as well as other similar reforestation area. (C) 2019 Elsevier Ltd. All rights reserved.