Widespread reduction in gross primary productivity caused by the compound heat and drought in Yangtze River Basin in 2022

长江 环境科学 生产力 还原(数学) 构造盆地 水资源管理 气候学 中国 地质学 地理 经济 数学 地貌学 几何学 宏观经济学 考古
作者
T.J. Li,Shaoqiang Wang,Bin Chen,Ying‐Ping Wang,Shiliang Chen,Jinghua Chen,Yuhan Xiao,Ye Xia,Ziqi Zhao,Xuan Chen,Yunhao Jiang,Peng Gu
出处
期刊:Environmental Research Letters [IOP Publishing]
卷期号:19 (3): 034048-034048 被引量:2
标识
DOI:10.1088/1748-9326/ad2cac
摘要

Abstract Terrestrial ecosystems play a pivotal role in the global carbon sequestration process, and their photosynthetic capacity is highly susceptible to fluctuations in climate conditions. In 2022, the Yangtze River Basin (YRB) in China experienced an extensive and severe compounded heat and drought event. Compared with the past two decades, our results revealed that the temperature increased by approximately 0.78 ± 0.45 °C and precipitation decreased by about 45.20 ± 30.10 mm from July to October 2022 over the whole YRB. Region I (west from the Sichuan Basin and east to the easternmost of the basin) experienced a more severe temperature increase (0.98 ± 0.35 °C) and precipitation decrease (−60.27 ± 23.75 mm) compared to the other regions in the YRB. Changes in temperature and precipitation resulted in an increase of 0.14 ± 0.06 kPa in vapor pressure deficit (VPD) and a decrease of 5.28 ± 2.09 m 3 m −3 in soil moisture, ultimately leading to a total loss of 26.12 ± 16.09 Tg C (about −6.08% compared to the 2001–2021 mean) in gross primary productivity (GPP) of July to October in 2022. It is noteworthy that broadleaf forests, which comprise 12.03% of the natural vegetation in region I, contributed only 6.46% of the GPP loss between July and October compared to other vegetation types, showing greater resistance to this climate event. Our findings from multiple linear regressions highlight that high temperatures and reduced soil moisture together contribute up to 94% photosynthesis loss in July–October in natural vegetation in region I, while the contribution of reduced VPD is minimal. In the future, we will further explore the impacts of compound heat and drought events on the coupled carbon and water cycles across different ecosystems, in order to better understand the ecosystem response mechanisms to extreme climates.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
zhao完成签到,获得积分10
1秒前
普鲁卡因发布了新的文献求助10
1秒前
zj完成签到,获得积分10
7秒前
蓝橙完成签到,获得积分10
8秒前
12秒前
GD88完成签到,获得积分10
13秒前
糟糕的梨愁完成签到,获得积分10
14秒前
莫西莫西完成签到 ,获得积分10
15秒前
小趴蔡完成签到 ,获得积分10
17秒前
唐唐发布了新的文献求助10
17秒前
飘逸剑身完成签到,获得积分10
20秒前
airtermis完成签到 ,获得积分10
20秒前
gfasdjsjdsjd完成签到,获得积分10
21秒前
21秒前
杨宁完成签到 ,获得积分10
21秒前
MchemG应助transition采纳,获得20
22秒前
科研通AI2S应助科研通管家采纳,获得10
23秒前
lxy发布了新的文献求助10
25秒前
gfasdjsjdsjd发布了新的文献求助10
26秒前
JCao727完成签到,获得积分10
26秒前
26秒前
27秒前
OAHCIL完成签到 ,获得积分10
28秒前
lixueao发布了新的文献求助10
29秒前
无辜的行云完成签到 ,获得积分0
32秒前
FIN应助gfasdjsjdsjd采纳,获得20
34秒前
今后应助gfasdjsjdsjd采纳,获得10
34秒前
排骨炖豆角完成签到 ,获得积分10
36秒前
一叶知秋应助大橙子采纳,获得10
38秒前
kk完成签到,获得积分10
41秒前
敏感春天完成签到,获得积分10
41秒前
凶狠的期待完成签到,获得积分10
43秒前
自然函发布了新的文献求助30
43秒前
JF123_完成签到 ,获得积分10
44秒前
量子星尘发布了新的文献求助10
44秒前
46秒前
杨召发布了新的文献求助10
47秒前
didi完成签到,获得积分10
47秒前
keyby发布了新的文献求助10
49秒前
FashionBoy应助xdc采纳,获得10
54秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038128
求助须知:如何正确求助?哪些是违规求助? 3575831
关于积分的说明 11373827
捐赠科研通 3305610
什么是DOI,文献DOI怎么找? 1819255
邀请新用户注册赠送积分活动 892655
科研通“疑难数据库(出版商)”最低求助积分说明 815022