黄河流域生态保护迈向高质量发展的特征——植被绿度、生产力和降水利用效率的差异性变化  

Divergent Changes in Vegetation Greenness,Productivity,and Rainfall Use Efficiency Are Characteristic of Ecological Restoration Towards High-Quality Development in the Yellow River Basin,China

作　　者：Yang Yu Ting Hua Liding Chen Zhiqiang Zhang Paulo Pereira 

机构地区：[1]Jixian National Forest Ecosystem Observation and Research Station,National Ecosystem Research Network of China(CNERN),School of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China [2]School of Soil and Water Conservation,Beijing Forestry University,Beijing 100083,China [3]State Key Laboratory of Earth Surface Processes and Resource Ecology,Faculty of Geographical Science,Beijing Normal University,Beijing 100875,China [4]Institute of Land Surface System and Sustainable Development,Faculty of Geographical Science,Beijing Normal University,Beijing 100875,China [5]State Key Laboratory of Urban and Regional Ecology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China [6]Environmental Management Laboratory,Mykolas Romeris University,Vilnius 08303,Lithuania

出　　处：《Engineering》2024年第3期109-119,共11页工程（英文）

基　　金：supported by the Fundamental Research Funds for the Central Universities (QNTD202303);the National Natural Science Foundation of China (42177310 and 42377331);the National Key Research and Development Program (2022YFF1300803);Yang Yu received the Outstanding Chinese and Foreign Youth Exchange Program supported by China Association for Science and Technology (2020-2022).

摘　　要：Globally,vegetation has been changing dramatically.The vegetation-water dynamic is key to understanding ecosystem structure and functioning in water-limited ecosystems.Continual satellite monitoring has detected global vegetation greening.However,a vegetation greenness increase does not mean that ecosystem functions increase.The intricate interplays resulting from the relationships between vegetation and precipitation must be more adequately comprehended.In this study,satellite data,for example,leaf area index(LAI),net primary production(NPP),and rainfall use efficiency(RUE),were used to quantify vegetation dynamics and their relationship with rainfall in different reaches of the Yellow River Basin(YRB).A sequential regression method was used to detect trends of NPP sensitivity to rainfall.The results showed that 34.53%of the YRB exhibited a significant greening trend since 2000.Among them,20.54%,53.37%,and 16.73%of upper,middle,and lower reach areas showed a significant positive trend,respectively.NPP showed a similar trend to LAI in the YRB upper,middle,and lower reaches.A notable difference was noted in the distributions and trends of RUE across the upper,middle,and lower reaches.Moreover,there were significant trends in vegetation-rainfall sensitivity in 16.86%of the YRB’s middle reaches—14.08%showed negative trends and 2.78%positive trends.A total of 8.41%of the YRB exhibited a marked increase in LAI,NPP,and RUE.Subsequently,strategic locations reliant on the correlation between vegetation and rainfall were identified and designated for restoration planning purposes to propose future ecological restoration efforts.Our analysis indicates that the middle reach of the YRB exhibited the most significant variation in vegetation greenness and productivity.The present study underscores the significance of examining the correlation between vegetation and rainfall within the context of the high-quality development strategy of the YRB.The outcomes of our analysis and the proposed ecological restoration framework c

关 键 词：Vegetation greenness Vegetation productivity Rainfall use efficiency Sensitivity Yellow River Basin 

分 类 号：X171.1[环境科学与工程—环境科学]