人类活动加速了黄河上游固碳服务的恢复

IF 3.9 2区 环境科学与生态学 Q1 ECOLOGY
Junyi Yang , Junsheng Li , Xiao Guan , Yanjun Chen , Zemin Zhang , Wenjie Li
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引用次数: 0

摘要

生态系统的固碳服务有助于吸收二氧化碳和减缓温室效应。因此,研究固碳服务的时空变化及其对人类活动的响应模式,对于实现区域战略碳峰值和碳中和("双碳")目标至关重要。本研究基于实测样点和空间模型,结合多源遥感数据,评估了黄河上游 1985-2020 年的时空固碳格局。具体而言,定量分析了人类活动对该地区固碳服务的影响。结果表明,在过去的 35 年中,黄河上游的固碳量从 80.09 Tg 到 98.48 Tg 不等,东北部和西南部较低,西北部和东南部较高。1985-1998 年,黄河上游固碳量主要受自然气候影响,呈波动上升趋势。1998 年至 2001 年,受人类活动和自然气候的影响,固碳量急剧下降;2001 年至 2020 年,受生态工程和气候变化的共同影响,固碳量呈明显上升趋势。1998-2001 年,人类影响程度为-5.92%至约-11.68%,2001-2020 年,人类影响程度约为 2.32%至 6.78%。这项研究表明,虽然人类社会发展会对生态系统的固碳服务产生负面影响,但生态工程可以加速其恢复,恢复趋势和恢复终点受到自然因素的制约。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Anthropogenic activities have accelerated the restoration of carbon sequestration services in the upper Yellow River

Carbon sequestration services stemming from ecosystems facilitate the absorption of CO2 and mitigation of greenhouse effects. Thus, investigating the spatiotemporal changes of carbon sequestration services and their response patterns to human activities is essential in relation to achieving the strategic carbon peak and carbon neutrality (“double carbon”) goal in a region. In this study, the spatiotemporal carbon sequestration patterns in the upper reaches of the Yellow River from 1985 to 2020 were assessed based on measured sample points and spatial modeling combined with multi-source remote sensing data. Specifically, the impacts of human activities on the carbon sequestration services in the area were quantitatively analyzed. The results showed that, for the past 35 years, carbon sequestration in the upper reaches of the Yellow River ranged from 80.09 Tg to 98.48 Tg, with lower levels in the northeast and southwest, and higher ones in the northwest and southeast. From 1985 to 1998, carbon sequestration in the upper reaches of the Yellow River was mainly affected by the natural climate and showed a fluctuating upward trend. From 1998 to 2001, carbon sequestration declined sharply due to the influence of human activities and the natural climate, whereas it showed a significant increasing trend from 2001 to 2020, affected by the combined effects of ecological engineering and climate change. In 1998–2001, the degree of human influence was −5.92% to approximately −11.68%, and from 2001 to 2020, it was approximately 2.32% to 6.78%. This study shows that while human social development can negatively affect the carbon sequestration services of ecosystems, ecological engineering can accelerate its recovery, recovery trends and recovery endpoints are constrained by natural factors.

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来源期刊
Ecological Engineering
Ecological Engineering 环境科学-工程:环境
CiteScore
8.00
自引率
5.30%
发文量
293
审稿时长
57 days
期刊介绍: Ecological engineering has been defined as the design of ecosystems for the mutual benefit of humans and nature. The journal is meant for ecologists who, because of their research interests or occupation, are involved in designing, monitoring, or restoring ecosystems, and can serve as a bridge between ecologists and engineers. Specific topics covered in the journal include: habitat reconstruction; ecotechnology; synthetic ecology; bioengineering; restoration ecology; ecology conservation; ecosystem rehabilitation; stream and river restoration; reclamation ecology; non-renewable resource conservation. Descriptions of specific applications of ecological engineering are acceptable only when situated within context of adding novelty to current research and emphasizing ecosystem restoration. We do not accept purely descriptive reports on ecosystem structures (such as vegetation surveys), purely physical assessment of materials that can be used for ecological restoration, small-model studies carried out in the laboratory or greenhouse with artificial (waste)water or crop studies, or case studies on conventional wastewater treatment and eutrophication that do not offer an ecosystem restoration approach within the paper.
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