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Spatiotemporal variation and driving factors of water yield services on the Qingzang Plateau

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Geography and Sustainability 2021年第1期2卷 31-39页

作者： Xiaofeng Wang Bingyang Chu Xiaoming Feng Yuehao Li Bojie Fu Shirong Liu Jiming Jin College of Land engineering Chang’an UniversityXi’an 710054China Shaanxi Provincial Key Laboratory of Land engineering Xi’an 710054China national key laboratory of urban and regional ecology Chinese academy of sciencesBeijing 100085China Institute of land surface system science and sustainable development Beijing normal universityBeijing 100875China Key Laboratory of forest Ecology and Environment China’s National Forestry and Grassland AdministrationInstitute of Forest EcologyEnvironment and ProtectionChinese Academy of ForestryNo.2 DongxiaofuHaidian DistrictBeijing 100091China Department of Watershed Sciences Utah State UniversityLoganUT 84322USA

Water resources are a basic need for social sustainable development and human *** an important national strategy for water resources security,spatial and temporal patterns and driving mechanisms of water yield ecosystem services on the Qingzang Plateau(QP)are critical for water resources management,optimal water allocation and the improvement of ecological water protection ***,only a few relevant studies are currently *** this study,we simulated the water yield(WY)of the QP over 34 years,from 1982 to 2015,using the InVEST model and analyzed the spatiotemporal dynamic relationships between WY and climate change as well as between WY and vegetation change,using geographically weighted regression(GWR)*** results showed that:1)from 1982 to 2015,the WY of the QP increased at an average rate of 3.8 mm/yr;2)WY presented a reduced spatial pattern from southeast to northwest;and 3)the WY driving factors have individual and spatial *** terms of the area percentage in promoting WY when analyzing each driving factor,precipitation(99.8%)and air pressure(53.3%)played the major roles in promoting WY,while temperature(71.9%),wind speed(57.2%),net primary productivity(87.2%),radiation(68.3%)and lake(87.7%)played negative *** areas where WY are dominated by temperature are the largest(41.1%),and followed by areas dominated by pressure(19.7%)and precipitation(18.5%).The results of this study provide scientific support for formulating regional water resources policy,social and economic development planning and other macro decisions for the QP.

关键词： Qingzang Plateau Water yield GWR models

Intraspecific leaf morphological variation in Quercus dentata Thunb.:a comparison of traditional and geometric morphometric methods,a pilot study

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Journal of forestry research 2022年第6期33卷 1751-1764页

作者： Kaiyu Yang Jianghao Wu Xinman Li Xinbo Pang Yangchen Yuan Guohui Qi Minsheng Yang College of forestry Hebei Agricultural UniversityBaoding 071000HebeiPeople’s Republic of China Hebei Key Laboratory for Tree Genetic Resources and forest Protection Baoding 071000HebeiPeople’s Republic of China administration Bureau of Hongyashan State Owned forest Farm in Yixian County Yixian 074200HebeiPeople’s Republic of China research center for Walnut engineering and Technology of Hebei Lincheng 054300HebeiPeople’s Republic of China Institute of Walnut Industry Technology of Hebei Province(Xingtai) Lincheng 054300HebeiPeople’s Republic of China

To compare the application of traditional morphometric methods(TMMs)and geometric morphometric methods(GMMs)in the study of intraspecific leaf morphological characters of Quercus dentata,fifteen linear measurement indices and thirteen landmarks of leaves were used to study leaf morphology of three provenances(H1,H2,and H3).In TMMs,principal component analysis(PCA)showed that leaf size–related indices played an important role in population *** least square(PLS)analysis showed that the main morphological characters affecting leaf size were the average depth of the lobes and the length–width ***,the important indices to distinguish the provenances were circularity,leaf width,and length–width *** results of discriminant analysis(DA)showed that 74.0%of H1,68.0%of H2,and 74.0%of H3 were correctly *** analysis showed that the Mahalanobis distances between H1 and H2,H1 and H3,and H2 and H3 were 4.3761,11.4629,and 10.2067,*** GMMs,PCA based on symmetrical components showed that the difference in leaf morphology was mainly due to the changing trend of the leaf apex and base,petiole length,and degree of leaf *** analysis showed that there was a significant covariation between the leaf symmetrical components and size:as the leaf enlarged,the widest part gradually moved up,and the shape changed from nearly oval to *** results showed that 86.0%and 78.0%of H1 and H2,70.0%and 80.0%of H1 and H3,and 82.0%and 76.0%of H2 and H3 were correctly *** variate analysis results showed that the Mahalanobis distances between H1 and H2,H1 and H3,and H2 and H3 were 1.7238,1.5380,and 1.6329,*** GMMs and TMMs showed significant differences in morphology among the three *** provenances,but GMMs had higher classification accuracy and could provide more information about leaf shape,whereas TMMs could provide more information about leaf *** on our results,GMMs are promising in t

关键词： Traditional morphometrics Geometric morphometrics Leaf morphology variation Quercus dentata Intraspecific

A new framework for GEOBIA: accurate individual plant extraction and detection using high-resolution RGB data from UAVs

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International Journal of Digital Earth 2023年第1期16卷 2599-2622页

作者： Kaile Yang Zhangxi Ye Huan Liu Xiaoyu Su Chenhui Yu Houxi Zhang Riwen Lai College of forestry Fujian Agriculture and Forestry UniversityFuzhou350028People’s Republic of China University Key Lab for Geomatics Technology and Optimized Resources Utilization in Fujian Province No.15 Shangxiadian RoadFuzhou350002FujianPeople’s Republic of China Key Laboratory of State forestry and grassland administration on Soil and Water Conservation of Red Soil Region in Southern China Fuzhou350002People’s Republic of China Cross-Strait Collaborative Innovation center of Soil and Water Conservation Fuzhou350002People’s Republic of China national Positioning Observation and research Station of Red Soil Hill Ecosystem in Changting Fuzhou350002People’s Republic of China

Citrus(Citrus reticulata),which is an important economic crop worldwide,is often managed in a labor-intensive and inefficient manner in developing countries,thereby necessitating more rapid and accurate alternatives tofield surveys for improved crop *** this study,we propose a novel method for individual tree segmentation from unmanned aerial vehicle remote sensing(RS)using a combination of geographic object-based image analysis(GEOBIA)and layer-adaptive Euclidean distance transformation-based watershed segmentation(LAEDT-WS).First,we use a GEOBIA support vector machine classifier that is optimized for features and parameters to identify the boundaries of citrus tree canopies accurately by generating mask ***,our LAEDT workflow separates connected canopies and facilitates the accurate segmentation of individual canopies using *** method exhibited an F1-score improvement of 10.75%compared to the traditional WS method based on the canopy height ***,it achieved 0.01%and 1.38%higher F1-scores than the state-of-the-art deep learning detection networks YOLOX and YOLACT,respectively,on the test *** method can be extended to detect larger-scale or more complex structured crops or economic plants by introducing morefinely detailed and transferable RS images,such as high-resolution or LiDAR-derived images,to improve the mask base map.

关键词： Crop management unmanned aerial vehicle remote sensing watershed segmentation geographic object-based image analysis

Nitrogen addition mediates the response of foliar stoichiometry to phosphorus addition: a meta-analysis

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Ecological Processes 2021年第1期10卷 804-816页

作者： Chengming You Changhui Peng Zhenfeng Xu Yang Liu Li Zhang Rui Yin Lin Liu Han Li Lixia Wang Sining Liu Bo Tan Paul Kardol forestry Ecological engineering in the Upper Reaches of the Yangtze River Key Laboratory of Sichuan Province and national forestry and grassland administration Key Laboratory of forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River and Rainy Area of West China Plantation Ecosystem Permanent Scientifc research Base Institute of Ecology and ForestrySichuan Agricultural University211 Huimin RoadWenjiang DistrictChengdu 611130SichuanPeople’s Republic of China. Department of Biological Science Institute of Environment SciencesUniversity of Quebec at MontrealCase Postale 8888Succursale Centre-VilleMontrealQC H3C 3P8Canada. Laboratory for Ecological Forecasting and Global Change College of ForestryNorthwest A&F UniversityNo.3 Taicheng RoadYangling 712100People’s Republic of China. Department of Community Ecology Helmholtz-Centre for Environmental Research-UFZTheodor-Lieser-Strasse 406110 HalleSaaleGermany. College of Animal Science and Technology Sichuan Agricultural UniversityChengdu 611130People’s Republic of China. Department of forest Ecology and management Swedish University of Agricultural Science90183 UmeåSweden.

Background:Changes in foliar nitrogen(N)and phosphorus(P)stoichiometry play important roles in predicting the efects of global change on ecosystem structure and ***,there is substantial debate on the efects of P addition on foliar N and P stoichiometry,particularly under diferent levels of N ***,we conducted a global meta-analysis to investigate how N addition alters the efects of P addition on foliar N and P stoichiometry across different rates and durations of P addition and plant growth types based on more than 1150 ***:We found that P addition without N addition increased foliar N concentrations,whereas P addition with N addition had no *** positive efects of P addition on foliar P concentrations were greater without N addition than with N ***,the efects of P addition on foliar N,P and N:P ratios varied with the rate and duration of P *** particular,short-term or low-dose P addition with and without N addition increased foliar N concentration,and the positive efects of short-term or low-dose P addition on foliar P concentrations were greater without N addition than with N *** responses of foliar N and P stoichiometry of evergreen plants to P addition were greater without N addition than with N ***,regardless of N addition,soil P availability was more efective than P resorption efciency in predicting the changes in foliar N and P stoichiometry in response to P ***:Our results highlight that increasing N deposition might alter the response of foliar N and P stoichiometry to P addition and demonstrate the important efect of the experimental environment on the *** results advance our understanding of the response of plant nutrient use efciency to P addition with increasing N deposition.

关键词： Ecological stoichiometry Plant nutrient regime Nutrient resorption efciency Soil N and P availability Global change Global synthesis

Overwintering covered with soil or avoiding burial of wine grapes under cold stress:Chinese wine industry’s past and future,challenges and opportunities

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Stress Biology 2023年第1期3卷 437-452页

作者： Ningjing Wan Bohan Yang Dingze Yin Tingting Ma Yulin Fang Xiangyu Sun College of Enology Shaanxi Provincial Key Laboratory of Viti-VinicultureViti-Viniculture Engineering Technology Center of State Forestry and Grassland AdministrationShaanxi Engineering Research Center for Viti-VinicultureHeyang Viti-Viniculture StationNingxia Eastern Foot of Helan Mountain Wine StationNorthwest A&F UniversityYangling 712100China center for Viticulture and Enology School of Agriculture and BiologyShanghai Jiao Tong UniversityShanghai 200240China College of Food Science and engineering Northwest A&F UniversityYangling 712100China

In northwest China,where winter is extremely cold and the grapevine is vulnerable to freezing damage,the application of soil covering has promoted the vigorous development of the local grape and wine ***,in recent years,the negative effects of burying soil for cold protection on the environment have gradually *** some viticultural regions,the phenomenon of"summer forest,winter desert"has ***,it is urgent for the Chinese grape industry to find a better solution to overwinter safely and environmentally *** review summarizes the advantages and disadvantages of widely used solutions to overwinter such as covering vines with soil,breeding of cold-resistant grapes,cold-resistant cultivation model,physical and chemical covering materials,and protected grape facilities were *** overwintering measures were proposed which avoid burial and grape overwintering research *** also provides a theoretical foundation and technical support to improve grape yield and quality in northwest China.

关键词： Wine grape Northwest China Cold stress Cold-resistant culture Bury and unearth vines Overwinter safely

Seasonality regulates the effects of resource addition on plant diversity and ecosystem functioning in semi-arid grassland

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Journal of Plant Ecology 2021年第6期14卷 1143-1157页

作者： Feng-Wei Xu Jian-Jun Li Ji-Shuai Su Xiao-Ming Lu Yang Wang Li-Ji Wu Chao-Nan Wang Di-Ma Chen Yong-Fei Bai State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093China research Institute of forestry Chinese Academy of ForestryBeijing 100091China grassland research center National Forestry and Grassland AdministrationBeijing 100091China Collaborative Innovation center of Jiangxi Typical Trees Cultivation and Utilization College of ForestryJiangxi Agricultural UniversityNanchang 330045China College of Biological and Pharmaceutical Sciences China Three Gorges UniversityYichang 443002China College of Lifesciences University of Chinese Academy of SciencesBeijing 100049China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China

Aims Seasonal variations in species richness,aboveground net primary productivity(ANPP)and stability under resource enrichment are frequently *** study explores how the impacts of resource enrichment on species richness,ANPP and stability vary among seasons in semi-arid *** We conducted a 3-year experiment in an Inner Mongolia grassland to determine the effects of resource input(water[W],nitrogen[N])on species richness,community ANPP and stability using seasonal sampling during the growing season(2013–2015).Structural equation modeling(SEM)was used to examine the relative importance of resource input on community stability via mechanistic pathways in each month and the whole growing *** Findings Resource inputs did not affect community ANPP in May and June,while N and/or NW enhanced ANPP in July and *** inputs generally did not affect species richness,asynchrony or community stability in most of the *** responses of perennial bunchgrasses(PB)to N and/or NW treatments contributed to the increased community ANPP in July and *** asynchrony may be the major mechanism contributing to community stability in May and June and the entire growing season,and PB stability is potentially the primary factor controlling community stability in July and August under resource *** results indicate that season and resource availability could interact to regulate species richness,community ANPP and stability in semi-arid *** findings have important implications for management practices in semi-arid grasslands in order to mitigate the impact of land use and global change.

关键词： season resource enrichment species richness aboveground net primary productivity(ANPP) community stability plant functional groups

The apricot(Prunus armeniaca L.)genome elucidates Rosaceae evolution and beta-carotenoid synthesis

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Horticulture research 2019年第1期6卷 133-144页

作者： Fengchao Jiang Junhuan Zhang Sen Wang Li Yang Yingfeng Luo Shenghan Gao Meiling Zhang Shuangyang Wu Songnian Hu Haoyuan Sun Yuzhu Wang Beijing Academy of forestry and Pomology Sciences 100093 BeijingPR China Apricot engineering and Technology research center National Forestry and Grassland Administration100093 BeijingPR China CAS Key Laboratory of Genome Sciences and Information Beijing Institute of GenomicsChinese Academy of Sciences100101 BeijingChina

Apricots,scientifically known as Prunus armeniaca L,are drupes that resemble and are closely related to peaches or *** one of the top consumed fruits,apricots are widely grown worldwide except in Antarctica.A high-quality reference genome for apricot is still unavailable,which has become a handicap that has dramatically limited the elucidation of the associations of phenotypes with the genetic background,evolutionary diversity,and population diversity in *** from *** was used to generate a standard,size-selected library with an average DNA fragment size of~20 *** library was run on Sequel SMRT Cells,generating a total of 16.54 Gb of PacBio subreads(N50=13.55 kb).The high-quality *** reference genome presented here was assembled using long-read single-molecule sequencing at approximately 70×coverage and 171×Illumina reads(40.46 Gb),combined with a genetic map for chromosome *** assembled genome size was 221.9 Mb,with a contig NG50 size of 1.02 *** covering 92.88%of the assembled genome were anchored on eight *** Universal Single-Copy Orthologs analysis showed 98.0%complete *** predicted 30,436 protein-coding genes,and 38.28%of the genome was predicted to be *** found 981 contracted gene families,1324 expanded gene families and 2300 apricot-specific *** differentially expressed gene(DEG)analysis indicated that a change in the expression of the 9-cis-epoxycarotenoid dioxygenase(NCED)gene but not lycopene beta-cyclase(LcyB)gene results in a lowβ-carotenoid content in the white cultivar“Dabaixing”.This complete and highly contiguous *** reference genome will be of help for future studies of resistance to plum pox virus(PPV)and the identification and characterization of important agronomic genes and breeding strategies in apricot.

关键词： synthesis breeding expanded

The zoonotic and natural foci characteristics of SARS-CoV-2

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Journal of Biosafety and Biosecurity 2021年第1期3卷 51-55页

作者： Zhenjun Li Jiafu Jiang Xiangdong Ruan Yigang Tong Shuai Xu Lichao Han Jianguo Xu State Key Laboratory for Infectious Disease Prevention and Control National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijingPR China State Key Laboratory of Pathogen and Biosecurity Beijing Institute of Microbiology and EpidemiologyBeijingPR China Academy of forest Inventory and Planning State Forestry and Grassland AdministrationBeijing 100714PR China Beijing Advanced Innovation center for Soft Matter Science and engineering College of Life Science and TechnologyBeijing University of Chemical TechnologyBeijingPR China

The origin of SARS-CoV-2 is still an unresolved *** this study,we systematically reviewed the main research progress of wild animals carrying virus highly homologous to SARS-CoV-2 and analyzed the natural foci characteristics of *** complexity of SARS-CoV-2 origin in wild animals and the possibility of SARS-CoV-2 long-term existence in human populations are also *** joint investigation of corona virus carried by wildlife,as well as the ecology and patho-ecology of bats and other wildlife,are key measures to further clarify the characteristics of natural foci of SARS-CoV-2 and actively defend against future outbreaks of emerging zoonotic diseases.

关键词： SARS-CoV-2 COVID-19 Natural foci disease Zoonotic disease

Seismic sentinel? An analysis of captive giant panda behavior in response to the Lushan earthquake in China

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Earthquake Science 2021年第6期34卷 522-530页

作者： Yuan Jin Xiaozan Ma Bo Luo Guiquan Zhang Rongping Wei Desheng Li Hemin Zhang Chris Newman Christina Buesching Dingzhen Liu Key Laboratory of Biodiversity Science and Ecological engineering of Ministry of Education College of Life SciencesBeijing Normal UniversityBeijing 100875China Key Laboratory of State forestry and grassland administration(national Park administration)on Conservation Biology of Rare Animals in the Giant Panda national Park Dujiangyan 611830China China Conservation and research center for the Giant Panda Dujiangyan 611830China Wildlife Conservation research Unit Department of ZoologyUniversity of OxfordThe Recanati-Kaplan CenterTubneyOX135QLUK Department of Biology Irving K.Barber Faculty of ScienceUniversity of British ColumbiaOkanaganKelownaBritish ColumbiaV1V 1V7Canada

It is widely believed that various animal species can sense and respond to the geophysical stimuli that precede earthquakes,especially electromagnetic fields,although supporting field evidence is mostly *** we report on the reactions of four female giant pandas under observation over the three days prior to the Lushan(30.1°N,103.0°E)magnitude 7.0 earthquake that occurred in Sichuan province,China,on April 20,*** observed no significant generalized behavioral anomalies indicative of them perceiving an impending *** also observed no startle behaviors in the 5 s prior to tremors commencing,indicating that these pandas either did not detect or did not respond to precursor *** findings suggest that although giant pandas have evolved in,and continue to occupy exclusively,a seismically active range in central China,they do not appear to perceive pre-earthquake geophysical warning signs.

关键词： bio-sentinel giant panda earthquakes abnormal be-havior electromagnetic field P-wave.