Responses of vegetation to hydroclimatic variables on the Loess Plateau after large scale vegetation restoration

IF 3.2 3区 地球科学 Q1 Environmental Science Hydrological Processes Pub Date : 2024-10-09 DOI:10.1002/hyp.15283
Huijun Feng, Jiming Jin
{"title":"Responses of vegetation to hydroclimatic variables on the Loess Plateau after large scale vegetation restoration","authors":"Huijun Feng,&nbsp;Jiming Jin","doi":"10.1002/hyp.15283","DOIUrl":null,"url":null,"abstract":"<p>Understanding plant-water relations is essential for effective regional water management and promoting ecologically sustainable development on the Loess Plateau, especially in the context of the Grain for Green project initiated in 1999. This study evaluated the variations in vegetation variables (leaf area index, enhanced vegetation index, solar-induced chlorophyll fluorescence and gross primary production) and hydroclimatic variables (precipitation, total water storage, aridity index and standardized precipitation evapotranspiration index) from 2003 to 2020, along with their interactions across the Loess Plateau. Our analysis revealed a general increase in vegetation variables, with the largest increase observed in the forest expansion areas. Precipitation and the aridity index exhibited significant upwards trends, while total water storage showed a significant decline, particularly in the forest expansion areas. Vegetation variables were more sensitive to changes in total water storage across the Loess Plateau. In the northwest region, where large-scale croplands and grasslands expansion occurred, vegetation variables also showed sensitivity to precipitation. Lag effect analysis revealed short time lags (1–3 months) between vegetation and hydroclimatic variables, expect for total water storage (6 months). Overall, human activities and climate factors contributed 58.4% and 41.6% to the increase in leaf area index, and 52.2% and 47.8% to the increase in gross primary production, respectively. In relatively arid environments, precipitation contributed over 50% to the observed vegetation greening. This study underscores the increasingly significant role of human activities in driving vegetation greening on the Loess Plateau, particularly in large-scale afforestation areas.</p>","PeriodicalId":13189,"journal":{"name":"Hydrological Processes","volume":"38 10","pages":""},"PeriodicalIF":3.2000,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Hydrological Processes","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/hyp.15283","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Environmental Science","Score":null,"Total":0}
引用次数: 0

Abstract

Understanding plant-water relations is essential for effective regional water management and promoting ecologically sustainable development on the Loess Plateau, especially in the context of the Grain for Green project initiated in 1999. This study evaluated the variations in vegetation variables (leaf area index, enhanced vegetation index, solar-induced chlorophyll fluorescence and gross primary production) and hydroclimatic variables (precipitation, total water storage, aridity index and standardized precipitation evapotranspiration index) from 2003 to 2020, along with their interactions across the Loess Plateau. Our analysis revealed a general increase in vegetation variables, with the largest increase observed in the forest expansion areas. Precipitation and the aridity index exhibited significant upwards trends, while total water storage showed a significant decline, particularly in the forest expansion areas. Vegetation variables were more sensitive to changes in total water storage across the Loess Plateau. In the northwest region, where large-scale croplands and grasslands expansion occurred, vegetation variables also showed sensitivity to precipitation. Lag effect analysis revealed short time lags (1–3 months) between vegetation and hydroclimatic variables, expect for total water storage (6 months). Overall, human activities and climate factors contributed 58.4% and 41.6% to the increase in leaf area index, and 52.2% and 47.8% to the increase in gross primary production, respectively. In relatively arid environments, precipitation contributed over 50% to the observed vegetation greening. This study underscores the increasingly significant role of human activities in driving vegetation greening on the Loess Plateau, particularly in large-scale afforestation areas.

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
大规模植被恢复后黄土高原植被对水文气候变量的响应
了解植物与水的关系对于有效的区域水资源管理和促进黄土高原生态可持续发展至关重要,尤其是在 1999 年启动的 "绿色粮食 "项目背景下。本研究评估了 2003 年至 2020 年黄土高原植被变量(叶面积指数、植被增强指数、太阳诱导叶绿素荧光和总初级生产力)和水文气候变量(降水量、总蓄水量、干旱指数和标准化降水蒸散指数)的变化及其相互作用。我们的分析表明,植被变量普遍增加,森林扩展区的增幅最大。降水量和干旱指数呈显著上升趋势,而总蓄水量则显著下降,尤其是在森林扩展区。整个黄土高原的植被变量对总蓄水量的变化更为敏感。在西北地区,由于耕地和草地大规模扩张,植被变量对降水也表现出敏感性。滞后效应分析表明,植被变量与水文气候变量之间的滞后期很短(1-3 个月),总蓄水量的滞后期为 6 个月。总体而言,人类活动和气候因素对叶面积指数增加的贡献率分别为 58.4% 和 41.6%,对总初级生产力增加的贡献率分别为 52.2% 和 47.8%。在相对干旱的环境中,降水对植被绿化的贡献率超过 50%。这项研究强调了人类活动在推动黄土高原植被绿化方面日益重要的作用,尤其是在大规模植树造林地区。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Hydrological Processes
Hydrological Processes 环境科学-水资源
CiteScore
6.00
自引率
12.50%
发文量
313
审稿时长
2-4 weeks
期刊介绍: Hydrological Processes is an international journal that publishes original scientific papers advancing understanding of the mechanisms underlying the movement and storage of water in the environment, and the interaction of water with geological, biogeochemical, atmospheric and ecological systems. Not all papers related to water resources are appropriate for submission to this journal; rather we seek papers that clearly articulate the role(s) of hydrological processes.
期刊最新文献
A Comprehensive Evaluation of Agricultural Drought Vulnerability Using Fuzzy-AHP-Based Composite Index Integrating Sensitivity and Adaptive Capacity A Tale of Two Storms: Inter-Storm Variability of Stable Water Isotopes in a Solute Transport Model Geostatistical Interpolation Approach for Improving Flood Simulation Within a Data-Scarce Region in the Tibetan Plateau Assessing the Hydrological Response to Land Use Changes Linking SWAT and CA-Markov Models Parameterizing Haverkamp Model From the Steady-State of Numerically Generated Infiltration: Influence of Algorithms for Steady-State Selection
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1