气候变化导致中国黄河流域 LUCC NPP 降低

IF 4 1区 地球科学 Q1 GEOGRAPHY, PHYSICAL
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引用次数: 0

摘要

人类活动及其导致的气候变化影响着生态系统的类型、结构和功能。了解与人为活动和气候变化相关的植被动态对于在全球变暖的背景下解决陆地碳循环问题至关重要。本研究旨在利用天气研究与预报(WRF)模型和综合生物圈模拟器(IBIS)模型,通过不同的实验情景,量化 2000-2020 年间人类活动引起的土地利用和土地覆被变化(LUCC)以及 LUCC 引起的气候变化对黄河流域陆地净初级生产力(NPP)的影响。结果表明,LUCC 可使 YRB 的 NPP 增加 1.2 ± 0.67 gC m-2 yr-1。LUCC导致的降水增加和温度降低对YRB的年均NPP有微弱的负面影响(-0.2 ± 0.74 gC m-2 yr-1)。LUCC 和 LUCC 引起的气候变化耦合增加了年均 NPP 约 0.6 ± 0.86 gC m-2 yr-1。LUCC 和 LUCC 引起的气候变化及其耦合效应对 NPP 的影响在春季最大,分别增加了 5.1 ± 0.51、3.4 ± 0.41 和 6.1 ± 0.79 gC m-2 yr-1。这些发现为全球变化背景下流域陆地生态系统的可持续和适应性管理提供了重要指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Climate change driven by LUCC reduced NPP in the Yellow River Basin, China

Anthropogenic activities and the resulting climate change affect the type, structure, and function of ecosystems. Understanding vegetation dynamics related to anthropogenic activities and climate change is critical to address the terrestrial carbon cycle in the context of global warming. The objective of this study is to quantify the effects of human-induced land use and land cover change (LUCC) and LUCC-induced climate change on terrestrial net primary productivity (NPP) in the Yellow River Basin (YRB) during 2000–2020 using Weather Research and Forecasting (WRF) model and Integrated Biosphere Simulator (IBIS) model through different experimental scenarios. Results indicated that LUCC can cause an increase in NPP of 1.2 ± 0.67 gC m−2 yr−1 in YRB. The increased precipitation and decreased temperature due to LUCC showed weak negative effect on annual mean NPP in YRB (−0.2 ± 0.74 gC m−2 yr−1). The coupling of LUCC and LUCC-induced climate change increased annual mean NPP approximately 0.6 ± 0.86 gC m−2 yr−1. The impacts of LUCC and LUCC-induced climate change and their coupling effects on NPP were greatest in spring, increasing NPP by 5.1 ± 0.51, 3.4 ± 0.41, and 6.1 ± 0.79 gC m−2 yr−1, respectively. These findings provide important guidance for the sustainable and adaptive management of terrestrial ecosystems in river basin in the context of global change.

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来源期刊
Global and Planetary Change
Global and Planetary Change 地学天文-地球科学综合
CiteScore
7.40
自引率
10.30%
发文量
226
审稿时长
63 days
期刊介绍: The objective of the journal Global and Planetary Change is to provide a multi-disciplinary overview of the processes taking place in the Earth System and involved in planetary change over time. The journal focuses on records of the past and current state of the earth system, and future scenarios , and their link to global environmental change. Regional or process-oriented studies are welcome if they discuss global implications. Topics include, but are not limited to, changes in the dynamics and composition of the atmosphere, oceans and cryosphere, as well as climate change, sea level variation, observations/modelling of Earth processes from deep to (near-)surface and their coupling, global ecology, biogeography and the resilience/thresholds in ecosystems. Key criteria for the consideration of manuscripts are (a) the relevance for the global scientific community and/or (b) the wider implications for global scale problems, preferably combined with (c) having a significance beyond a single discipline. A clear focus on key processes associated with planetary scale change is strongly encouraged. Manuscripts can be submitted as either research contributions or as a review article. Every effort should be made towards the presentation of research outcomes in an understandable way for a broad readership.
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