Changes in the relationship between vapour pressure deficit and water use efficiency with the drought recovery time: A case study of the Yellow River Basin

蒸汽压差 环境科学 生态系统 用水效率 水文学(农业) 分水岭 水循环 碳循环 大气科学 农学 生态学 光合作用 灌溉 蒸腾作用 生物 地质学 植物 岩土工程 机器学习 计算机科学
作者
Donglin Fan,Yanxu Liu,Yao Ying,Liping A. Cai,Shanshan Wang
出处
期刊:Journal of Environmental Management [Elsevier BV]
卷期号:326: 116756-116756 被引量:6
标识
DOI:10.1016/j.jenvman.2022.116756
摘要

Drought is a major driver of interannual variability in the gross primary productivity (GPP) of global terrestrial ecosystems, and drought recovery time has been widely used to assess ecosystem responses to drought. However, the response of the carbon-water coupled cycle to drought, especially changes in the correlation between drought intensity and carbon-water coupling throughout the recovery time, remains unclear. In this study, the Yellow River Basin (YRB) located mostly in drylands was the study area. We assessed the correlation between the standardized water vapour pressure deficit (VPD) and the water use efficiency of ecosystems (WUEe) and water use efficiency of canopies (WUEc) every month with the drought recovery time of GPP. We found that the drought intensity in the middle reach of the YRB (MYRB) was greater and the drought recovery time was longer than those in the upper reach (UYRB) and lower reach (LYRB) during the period from 2003 to 2017. In terms of the correlation between drought intensity and carbon-water coupling, the greater the VPD was, the lower the WUEc. In addition, the correlation of WUEc with VPD was higher than that of WUEe in most areas of the YRB, especially in the LYRB. On the watershed level, the correlation between the two types of WUE and VPD increased gradually with the recovery time, while the correlation between WUEc and VPD (mostly negative) changed more than the correlation between WUEe and VPD (mostly positive). Therefore, the response of WUEc to meteorological drought should be given more attention, especially during the middle and late stages of drought, since it exhibited an opposite signal compared to that of WUEe during drought recovery.
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
翎儿响叮当完成签到 ,获得积分10
刚刚
丝垚完成签到 ,获得积分10
1秒前
丘比特应助贺知什么书采纳,获得10
1秒前
CipherSage应助112我的采纳,获得10
3秒前
隐形曼青应助土豪的觅翠采纳,获得10
3秒前
5秒前
ding应助3333采纳,获得10
5秒前
dududuudu完成签到 ,获得积分10
6秒前
李健应助HY采纳,获得10
7秒前
yang完成签到,获得积分10
9秒前
10秒前
xyx完成签到,获得积分10
11秒前
weiyf15完成签到 ,获得积分10
11秒前
353851547crf完成签到,获得积分10
12秒前
13秒前
c2发布了新的文献求助20
14秒前
Aman发布了新的文献求助10
14秒前
16秒前
16秒前
17秒前
快乐的小叮当应助橙子采纳,获得10
17秒前
17秒前
bbh发布了新的文献求助10
17秒前
小阳发布了新的文献求助10
19秒前
今后应助科研爱好者采纳,获得10
19秒前
20秒前
20秒前
20秒前
HY发布了新的文献求助10
21秒前
陈曦发布了新的文献求助10
22秒前
打打应助如此这般采纳,获得10
22秒前
JamesPei应助morena采纳,获得10
22秒前
112我的发布了新的文献求助10
24秒前
3333发布了新的文献求助10
25秒前
ZR666888完成签到,获得积分10
26秒前
小阳完成签到,获得积分10
26秒前
打打应助H2CO3采纳,获得10
28秒前
28秒前
Zel博博举报YoungLee求助涉嫌违规
30秒前
32秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
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 3989510
求助须知:如何正确求助?哪些是违规求助? 3531756
关于积分的说明 11254536
捐赠科研通 3270255
什么是DOI,文献DOI怎么找? 1804947
邀请新用户注册赠送积分活动 882113
科研通“疑难数据库(出版商)”最低求助积分说明 809176