检索结果-南通市图书馆

Evidence of advancing spring xylem phenology in Chinese forests under global warming

Science China Earth Sciences 2023年第10期66卷 2187-2199页

作者： huihong XUE Feng ShI Fabio GENNARETTI yongshuo h.fu Bin hE Xiuchen WU Zhengtang GUO Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing100049China CAS Center for Excellence in Life and Paleoenvironment Beijing100044China Institut de Recherche sur les Forêts Groupe de Recherche enÉcologie de la MRC-AbitibiUniversitédu Québec en Abitibi-TémiscamingueAmosJ9T 2L8Canada College of Water Sciences Beijing Normal UniversityBeijing100875China Faculty of Geographical Science Beijing Normal UniversityBeijing100875China

Phenological responses of vegetation to the ongoing warming trend impact current and future primary productivity.however,few studies focus on wood phenology because its observed data are much scarcer,which hinders the estimation and prediction of forest carbon budgets over large regions.here,we use a physiological process-based tree-ring growth model(Vaganov-Shashkin model)to investigate the spatial and temporal variations of spring xylem phenology(start of the growing season of xylem,SOS_(x))in tree-ring sites of China during 1962-2016 CE.The model is calibrated on measured tree-ring width chronologies(70 tree-ring chronologies)and successfully validated with field observations of xylogenesis.We found that spring xylem phenology significantly advances during 1962-2016 CE period under global warming,with the rate of advance quickly increasing after the 1990s to an average of 0.25 days per year.The preseason daily mean temperature is the main climatic driver for spring xylem phenology as indicated by its significant correlations with SOS_(x)at most sites(71%).Warmer preseason allows heat requirements for tree growth to be reached more quickly,with increase of 1℃in temperature of preseason anticipates SOS_(x)by 6 to 7 days,which will benefit the radial growth of trees in the relatively cold-humid environments.In addition,the significant positive correlation between the simulated spring xylem phenology and remote sensing derived phenology highlights the primary and secondary growth may be governed by the same variable(temperature)and change in the same direction with global warming.This study provides the long-term perspective on the spring xylem phenology variations covering most of China.

关键词： Tree-ring Xylem Phenology Vaganov-Shashkin model China

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Climate warming shifts the time interval between flowering and leaf unfolding depending on the warming period

引用

Science China(Life Sciences) 2022年第11期65卷 2316-2324页

作者： Shuxin Wang Zhaofei Wu Yufeng Gong Shubiao Wang Wei Zhang Shanshan Zhang hans J.De Boeck yongshuo h.fu College of Water Sciences Beijing Normal UniversityBeijing 100085China Beijing Zoo Beijing 100044China Plants and Ecosystems Department of BiologyUniversity of AntwerpAntwerpAntwerpen 2000Belgium

The timing of flowering(FL)and leaf unfolding(LU)determine plants’reproduction and vegetative growth.Global warming has substantially advanced FL and LU of temperate and boreal plants,but their responses to warming differ,which may influence the time interval between FL and LU(ΔLU-FL),thereby impacting plant fitness and intraspecific physiological processes.Based on twigs collected from two flowering-first tree species,Populus tomentosa and Amygdalus triloba,we conducted a manipulative experiment to investigate the effects of winter chilling,spring warming and photoperiod on theΔLU-FL.We found that photoperiod did not affect theΔLU-FL of Amygdalus triloba,but shortenedΔLU-FL by 5.1 d of Populus tomentosa.Interestingly,spring warming and winter chilling oppositely affected theΔLU-FL of both species.Specifically,low chilling accumulation extended theΔLU-FL by 3.8 and 9.4 d for Populus tomentosa and Amygdalus triloba,but spring warming shortened theΔLU-FL by 4.1 and 0.2 d℃^(-1).Our results indicate that climate warming will decrease or increase theΔLU-FL depending on the warming periods,i.e.,spring or winter.The shifted time interval between flowering and leaf unfolding may have ecological effects including affecting pollen transfer efficiency and alter the structure and functioning of terrestrial ecosystem.

关键词： chilling flowering leaf unfolding photoperiod spring phenology time interval warming period

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Warming-induced phenological mismatch between trees and shrubs explains high-elevation forest expansion

引用

National Science Review 2023年第10期10卷 62-71页

作者： Xiaoxia Li Eryuan Liang J.Julio Camarero Sergio Rossi Jingtian Zhang haifeng Zhu yongshuo h.fu Jian Sun Tao Wang Shilong Piao Josep Pe?uelas State Key Laboratory of Tibetan Plateau Earth System Environment and Resources (TPESER)Institute of Tibetan Plateau ResearchChinese Academy of Sciences Laboratoire sur les écosystèmes terrestres boréaux Département des Sciences FondamentalesUniversité du Québec à Chicoutimi Instituto Pirenaico de Ecología (IPE-CSIC) College of Water Sciences Beijing Normal University CREAF Cerdanyola del Valles CSIC Global Ecology Unit CREAF-CSIC-UAB

Despite the importance of species interaction in modulating the range shifts of plants,little is known about the responses of coexisting life forms to a warmer climate.here,we combine long-term monitoring of cambial phenology in sympatric trees and shrubs at two treelines of the Tibetan Plateau,with a meta-analysis of ring-width series from 344 shrubs and 575 trees paired across 11 alpine treelines in the Northern hemisphere.Under a spring warming of +1℃,xylem resumption advances by 2-4 days in trees,but delays by 3-8 days in shrubs.The divergent phenological response to warming was due to shrubs being3.2 times more sensitive than trees to chilling accumulation.Warmer winters increased the thermal requirement for cambial reactivation in shrubs,leading to a delayed response to warmer springs.Our meta-analysis confirmed such a mechanism across continental scales.The warming-induced phenological mismatch may give a competitive advantage to trees over shrubs,which would provide a new explanation for increasing alpine treeline shifts under the context of climate change.

关键词： chilling climate warming forcing treeline shift xylogenesis

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Vegetation phenology and its ecohydrological implications from individual to global scales

引用

Geography and Sustainability 2022年第4期3卷 334-338页

作者： Shouzhi Chen yongshuo h.fu Fanghua hao Xiaoyan Li Sha Zhou Changming Liu Jing Tang College of Water Sciences Beijing Normal UniversityBeijing 100875China College of Urban and Environmental Sciences Central China Normal UniversityWuhan 430079China State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China Key Laboratory of Terrestrial Water Cycle and Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China Department of Physical Geography and Ecosystem Science Lund UniversitySölvegatan 12SE-22362LundSweden Terrestrial Ecology Section Department of BiologyUniversity of CopenhagenCopenhagen DK-2100Denmark

The Earth is experiencing unprecedented climate change.Vegetation phenology has already showed strong response to the global warming,which alters mass and energy fluxes on terrestrial ecosystems.With technology and method developments in remote sensing,computer science and citizen science,many recent phenology-related studies have been focused on macrophenology.In this perspective,we 1)reviewed the responses of vegetation phenology to climate change and its impacts on carbon cycling,and reported that the effect of shifted phenology on the terrestrial carbon fluxes is substantially different between spring and autumn;2)elaborated how vegetation phenology affects ecohydrological processes at different scales,and further listed the key issues for each scale,i.e.,focusing on seasonal effect,local feedbacks and regional vapor transport for individual,watershed and global respectively);3)envisioned the potentials to improve current hydrological models by coupling vegetation phenology-related processes,in combining with machine learning,deep learning and scale transformation methods.We propose that comprehensive understanding of climate-macrophenology-hydrology interactions are essential and urgently needed for enhancing our understanding of the ecosystem response and its role in hydrological cycle under future climate change.

关键词： Global warming Marcophenology Carbon balance Ecohydrology

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Contrasting phenology responses to climate warming across the northern extra-tropics

引用

fundamental Research 2022年第5期2卷 708-715页

作者： Xiaojun Geng Yaru Zhang yongshuo h.fu Fanghua hao Ivan A.Janssens Josep Penuelas Shilong Piao Jing Tang Zhaofei Wu Jing Zhang Xuan Zhang Nils Chr.Stenseth College of Water Sciences Beijing Normal UniversityBeijing 100875China General Institute of Water Resources and hydropower Planning and Design(GIWP) Ministry of Water ResourcesBeijing 100053China Plants and Ecosystems Department of BiologyUniversity of AntwerpAntwerpBelgium CREAF Cerdanyola del VallèsBarcelona 08193CataloniaSpain CSIC Global Ecology Unit CREAF-CSIC-UABBellaterraBarcelona 08193CataloniaSpain Pecking University Beijing100847China Department of Physical Geography and Ecosystem Science Lund UniversitySE22362 LundSweden Terrestrial Ecology Section Department of BiologyUniversity of CopenhagenDK2100CopenhagenDenmark Center for Permafrost(CENPERM) University of CopenhagenDK1350CopenhagenDenmark Centre for Ecological and Evolutionary Synthesis(CEES) Department of BiosciencesUniversity of OsloN-0316 OsloNorway

Climate warming has substantially advanced the timing of spring leaf-out of woody species at middle and high latitudes,albeit with large differences.Insights in the spatial variation of this climate warming response may therefore help to constrain future trends in leaf-out and its impact on energy,water and carbon balances at global scales.In this study,we used in situ phenology observations of 38 species from 2067 study sites,distributed across the northern hemisphere in China,Europe and the United States,to investigate the latitudinal patterns of spring leaf-out and its sensitivity(S T,advance of leaf-out dates per degree of warming)and correlation(R_(T),partial correlation coefficient)to temperature during the period 1980-2016.Across all species and sites,we found that S_(T) decreased significantly by 0.15±0.02 d℃^(-1)°N^(-1),and R_(T) increased by 0.02±0.001°N^(-1)(both at Phe latitudinal patterns in R_(T) and S_(T) were explained by the differences in requirements of chilling and thermal forcing that evolved to maximize tree fitness under local climate,particularly climate predictability and summed precipitation during the pre-leaf-out season.Our results thus showed complicated spatial differences in leaf-out responses to ongoing climate warming and indicated that spatial differences in the interactions among environmental cues need to be embedded into large-scale phenology models to improve the simulation accuracy.

关键词： Apparent temperature sensitivity Latitudinal pattern Leaf-out Temperate tree Climate change

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A comprehensive review on coupled processes and mechanisms of soil-vegetation-hydrology, and recent research advances

引用

Science China Earth Sciences 2022年第11期65卷 2083-2114页

作者： Zhongkai LI Xiaoyan LI Sha ZhOU Xiaofan YANG yongshuo fu Chiyuan MIAO Shuai WANG Guanghui ZhANG Xiuchen WU Chao YANG Yuanhong DENG State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China School of Natural Resources Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China Academy of Plateau Science and Sustainability Qinghai Normal UniversityXining 810016China School of Geographical Sciences Qinghai Normal UniversityXining 810016China College of Water Sciences Beijing Normal UniversityBeijing 100875China

Research on the coupling of soil,vegetation,and hydrological processes is not only a research hotspot in disciplines such as pedology,ecohydrology and Earth system science but also important for achieving sustainable development.however,scientists from different disciplines usually study the coupling mechanism of soil-vegetation-hydrological processes at very different space and time scales,and the mechanistic connections between different scales are quite few.This article reviewed research advances in coupled soil-vegetation-hydrological processes at different spatial scales—from leaf stomata to watershed and regional scales—and summarized the spatial upscaling methods and modeling approaches of coupled soil-vegetationhydrological processes.We identify and summarize the following coupling processes:(1)carbon-water exchange in leaf stomata and root-soil interface;(2)changes in soil aggregates and profile hydraulic properties caused by plant roots and water movement;(3)precipitation and soil moisture redistribution by plant canopy and root;(4)interactions between vegetation patches and local hydrological process;(5)links between plant community succession and soil development;and(6)links between watershed/regional water budget and vegetation phenology and production.Meanwhile,the limitations and knowledge gaps in the observations,mechanisms,scaling methods,and modeling approaches of coupled soil-vegetation-hydrological processes were analyzed.To achieve a deep integration of various coupling processes across different spatiotemporal scales,future work should strengthen multiscale,multifactor and multiprocess soil-vegetation-hydrology coupling observations and mechanism studies,develop new scaling methods,identify different feedback pathways,and take time-variable plant behavior and soil hydraulic properties into account during modeling.

关键词： Ecohydrological process Soil process Plant-soil feedback Modeling approaches Scaling method

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Progress in plant phenology modeling under global climate change

引用

Science China Earth Sciences 2020年第9期63卷 1237-1247页

作者： yongshuo fu Xinxi LI Xuancheng ZhOU Xiaojun GENG Yahui GUO Yaru ZhANG College of Water Sciences Beijing Normal UniversityBeijing 100875China

Plant phenology is the study of the timing of recurrent biological events and the causes of their timing with regard to biotic and abiotic forces.Plant phenology affects the structure and function of terrestrial ecosystems and determines vegetation feedback to the climate system by altering the carbon,water and energy fluxes between the vegetation and near-surface atmosphere.Therefore,an accurate simulation of plant phenology is essential to improve our understanding of the response of ecosystems to climate change and the carbon,water and energy balance of terrestrial ecosystems.Phenological studies have developed rapidly under global change conditions,while the research of phenology modeling is largely lagged.Inaccurate phenology modeling has become the primary limiting factor for the accurate simulation of terrestrial carbon and water cycles.Understanding the mechanism of phenological response to climate change and building process-based plant phenology models are thus important frontier issues.In this review,we first summarized the drivers of plant phenology and overviewed the development of plant phenology models.Finally,we addressed the challenges in the development of plant phenology models and highlighted that coupling machine learning and Bayesian calibration into process-based models could be a potential approach to improve the accuracy of phenology simulation and prediction under future global change conditions.

关键词： Global change Plant phenology Phenology modeling Machine learning Ecophysiological experiment

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

陆表自然和人文要素相互作用——“全球变化及应对”重点专项研究进展

引用

大气科学学报 2024年第1期47卷 1-22页

作者：王开存王灿李龙辉汪涛吴国灿付永硕马倩张井勇蔡闻佳曹静喻朝庆朱华晟南卓铜陈旻张晶纪多颖沈妙根唐文君何斌占文凤北京大学城市与环境学院北京100871 清华大学环境学院北京100084 南京师范大学地理科学学院江苏南京210023 中国科学院青藏高原研究所北京100085 北京师范大学地理科学学部北京100875 北京师范大学水科学研究院北京100875 中国科学院大气物理研究所北京100029 清华大学地球系统科学系北京100084 清华大学经济与管理学院北京100084 海南大学生态与环境学院海南海口570228 南京大学国际地球系统科学研究所江苏南京210023

在国家重点研发计划支持下,项目提出了陆表不均一性检测和订正的新方法,解决了渐变型不均一性检测和订正的难题,构建了中国地表太阳辐射、气温、地温、风速和降水等参数均一化站点和格点数据集,修订了关于中国地表风速变化趋势、增温格... 详细信息

在国家重点研发计划支持下,项目提出了陆表不均一性检测和订正的新方法,解决了渐变型不均一性检测和订正的难题,构建了中国地表太阳辐射、气温、地温、风速和降水等参数均一化站点和格点数据集,修订了关于中国地表风速变化趋势、增温格局及其形成机制的结论。融合多源数据,构建并验证了千米级、流域级或县域级的电厂、人口、生物质能、取水量、氮排放、二氧化碳排放等影响自然系统的关键人文要素历史和未来预估数据集。构建了未来关键人文要素情景,研制了碳中和目标下甲烷和氧化亚氮排放情景和用于驱动全球模式的未来情景,预估了中国碳中和战略的实施对全球变暖的减缓作用,发现中国碳中和对远期和中期全球变暖的减缓作用显著。给出了中国各省份水体氮排放安全阈值及超越时间,阐明了中国粮食产量与氮施肥的关系,提出了在保障粮食安全的前提下减少水体氮排放的有效途径,指出重构城乡养分循环体系是同时保障粮食安全和恢复水质的必要途径。发现全球饱和水汽压差的年际变化与大气二氧化碳浓度上升速率的年际变化显著相关,阐明了饱和水汽压差变化在调控生态系统生产力中的重要角色以及多因素耦合作用在生态系统生产力变化中的复杂影响。建议更全面细致地评估中国各种碳中和实现路径的社会经济和自然生态影响,以保证碳中和目标与其他可持续发展目标的协同实现。

关键词：气候变化未来情景碳中和陆面过程生态系统生产力粮食安全

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

2022年夏季长江流域复合高温干旱事件的影响及应对

引用

水资源保护 2023年第6期39卷 46-52页

作者：郝增超张璇郝芳华付永硕北京师范大学水科学研究院北京100875

基于ERA5月尺度数据,分别计算干旱指标(SPI)和高温指标(STI),从复合型极端事件的角度分析了长江流域2022年夏季复合高温干旱事件及影响。研究结果表明:该事件是长江流域1979年以来覆盖范围最广的复合高温干旱事件,导致水资源供给减少,... 详细信息

基于ERA5月尺度数据,分别计算干旱指标(SPI)和高温指标(STI),从复合型极端事件的角度分析了长江流域2022年夏季复合高温干旱事件及影响。研究结果表明:该事件是长江流域1979年以来覆盖范围最广的复合高温干旱事件,导致水资源供给减少,影响农业生产及民众健康,同时导致电力供需失衡,增加森林火灾风险;未来应在复合高温干旱事件的发生机制、联合监测和预测、影响评估、联合调度及适应性措施等方面加强研究。

关键词：干旱高温复合型极端事件气候变化长江流域

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

长江与黄河流域复合高温干旱事件时空演变特征

引用

水资源保护 2023年第2期39卷 70-77页

作者：姜雨彤郝增超冯思芳张宇张璇付永硕郝芳华北京师范大学水科学研究院北京100875

利用1961—2014年月降水与日最高气温数据,定义了3d/90%型和5d/90%型两类复合高温干旱事件,比较分析了长江流域和黄河流域夏季复合高温干旱事件的分布特征与时空变化规律,量化了复合高温干旱事件与单独热浪事件的温度差异。研究结果表明... 详细信息

利用1961—2014年月降水与日最高气温数据,定义了3d/90%型和5d/90%型两类复合高温干旱事件,比较分析了长江流域和黄河流域夏季复合高温干旱事件的分布特征与时空变化规律,量化了复合高温干旱事件与单独热浪事件的温度差异。研究结果表明:复合高温干旱事件在长江流域中下游地区发生频率较高,在黄河流域空间差异不大;两流域复合高温干旱事件频率均呈增加趋势,长江流域3 d/90%型和5 d/90%型复合高温干旱事件日数增加趋势分别为每10 a 0.19 d和0.14 d,黄河流域的增加趋势分别为每10 a 0.29 d和0.096 d;长江流域复合高温干旱日数在西北部与南部地区增加较多,下游东北部地区有所减少,黄河流域在中部和西部增加较多;两流域1988—2014年复合高温干旱事件影响范围总体上比1961—1987年增加,黄河流域影响范围占比大于长江流域;相比于单独热浪事件,复合高温干旱事件的平均温度更高,长江流域和黄河流域3 d/90%(5 d/90%)型复合高温干旱事件与单独热浪事件平均气温差值分别为0.65℃和0.64℃(0.54℃和1.21℃)。

关键词：干旱复合高温干旱事件热浪事件长江流域黄河流域

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：