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Modelling analysis embodies drastic transition among global potential natural vegetations in face of changing climate

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Forest Ecosystems 2024年第2期11卷 184-192页

作者： Zhengchao Ren Lei Liu Fang Yin Xiaoni Liu School of Earth Science and Resources Chang’an UniversityXi’an710054China research center of ecological construction and environmental conservation in gansu province Gansu Agricultural UniversityLanzhou730070China State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing100101China School of Land Engineering Chang’an UniversityXi’an710054China College of Pratacultural Science Gansu Agricultural UniversityLanzhou730070China

Potential natural vegetation(PNV)is a valuable reference for ecosystem renovation and has garnered increasing attention ***,there is limited knowledge on the spatio-temporal distributions,transitional processes,and underlying mechanisms of global natural vegetation,particularly in the case of ongoing climate *** this study,we visualize the spatio-temporal pattern and inter-transition procedure of global PNV,analyse the shifting distances and directions of global PNV under the influence of climatic disturbance,and explore the mechanisms of global PNV in response to temperature and precipitation *** achieve this,we utilize meteorological data,mainly temperature and precipitation,from six phases:the Last Inter-Glacial(LIG),the Last Glacial Maximum(LGM),the Mid Holocene(MH),the Present Day(PD),2030(20212040)and 2090(2081–2100),and employ a widely-accepted comprehensive and sequential classification sy–stem(CSCS)for global PNV *** find that the spatial patterns of five PNV groups(forest,shrubland,savanna,grassland and tundra)generally align with their respective ecotopes,although their distributions have shifted due to fluctuating temperature and ***,we observe an unexpected transition between tundra and savanna despite their geographical *** shifts in distance and direction of five PNV groups are mainly driven by temperature and precipitation,although there is heterogeneity among these shifts for each ***,the heterogeneity observed among different global PNV groups suggests that they may possess varying capacities to adjust to and withstand the impacts of changing *** spatio-temporal distributions,mutual transitions and shift tendencies of global PNV and its underlying mechanism in face of changing climate,as revealed in this study,can significantly contribute to the development of strategies for mitigating warming and promoting re-vegetation in degraded regions worldwide.

关键词： Potential natural vegetation Global warming Vegetation classification Predicted model CSCS

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Interspecific association of sika deer in terrestrial animal communities of Liancheng National Nature Reserve, China

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Integrative Zoology 2023年第4期18卷 688-703页

作者： Tengwei SU Guofa CUI Zihong MAN Wentao LI Zhihao HUANG Jinfeng CHEN Minyan ZHAO School of Ecology and Nature conservation Beijing Forestry UniversityBeijingChina School of ecological and environmental Engineering Yunnan Forestry Technological CollegeKunmingChina Administration Bureau of Liancheng National Nature Reserve of gansu province LanzhouChina research center for Eco-environmental Sciences Chinese Academy of SciencesBeijingChina Institute of Tibetan Plateau research Chinese Academy of SciencesBeijingChina

The prevention and control of invasive of alien species is an important work for nature *** study analyzes the development trend of the alien species sika deer in Liancheng National Nature *** October 2019 to June 2020,3523 valid photos and videos of terrestrial animals were acquired from 130 camera traps,and sika deer were recorded in 21 photos from 13 *** survival of the sika deer population was investigated by means of morphological identification,population structure analysis,species relative abundance indices,and species spatial association analysis.A total of 13 sika deer individuals were identified by camera trapping,including two kids and three subadults representing the reproductive capacity of the ***,sika deer is not associated with any local species and was outside the spatial association network of terrestrial animals in Liancheng National Nature Reserve,indicating that the sika deer population has not been integrated into the local community and has failed to perform its ecological *** is worth noting that the reserve provides habitat suitable for sika deer and that the population has adequate reproductive *** to the lack of large apex predators in the reserve,the population size of ungulates such as sika deer,red deer,and Siberian roe deer may expand and lead to population outbreaks and the associated problems for the *** restore large-and medium-sized carnivores and avoid the population outbreak of the species,the present challenges require immediate attention in Liancheng National Nature Reserve.

关键词： alien species interspecific associations spatial association network sika deer Liancheng National Nature Reserve

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Using ecosystem service supply and ecosystem sensitivity to identify landscape ecology security patterns in the Lanzhou-Xining urban agglomeration, China

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Journal of Mountain Science 2020年第11期17卷 2758-2773页

作者： TONG Hua-li SHI Pei-ji College of Geography and environmental Science Northwest Normal UniversityLanzhou 730070China gansu province Land Use and Comprehensive Improvement Engineering research center Lanzhou 730070China

The construction of an ecological security pattern(ESP)is an important way to ensure regional ecological security and to achieve sustainable regional *** is also one of the hotspot topics of landscape ecology *** paper identifies the ecological source through the evaluation of the ecosystem service and ecosystem sensitivity of the Lanzhou-Xining(Lan-Xi)urban *** minimum cumulative resistance(MCR)model modified by night light data NPP/VIIRS(National Polar-orbiting Operational environmental Satellite System Preparatory Project/Visible Infrared Imaging Radiometer Suite)was used to measure the relative resistance of the materials and energy circulation between the source areas,and to establish the resistance surface of the ecological source area *** ecological corridors were identified based on ecological sources and resistance *** ecological strategic node is the ecological fragile point in the ecological *** ecological strategic node is identified with hydrological module by superimposing the"ridge line"of cumulative ecological resistance with the ecological *** with ecological sources,corridors and strategic nodes,the ESP of the Lan-Xi urban agglomeration can be *** ecological source of the Lan-Xi urban agglomeration accounts for 28.42%of the total area,most of which is distributed within Qinghai *** nature reserves in the area are all located within the ecological source area.A total of 41 potential ecological corridors have been identified in the study *** total length of the potential corridors is 1201.03 km,comprising 23 source corridors and 18 radiation *** are 30 strategic nodes identified in the Lan-Xi urban *** locations are the most vulnerable areas of the ecological *** engineering should be applied in the construction of *** by the ecological source,the potential ecological corridor extends from

关键词： ecological security pattern Ecosystem service Ecosystem sensitivity ecological source ecological corridor Urban agglomeration

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Influence of ecological function protection zone on the water conservation in gansu-Qinghai Contiguous Region of the upper Yellow River

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Journal of Mountain Science 2024年第4期21卷 1345-1357页

作者： TONG Huali CHEN Qingbo ZHANG Xuan College of Geography and environmental Science Northwest Normal UniversityLanzhou 730070China gansu province Land Use and Comprehensive Improvement Engineering research center Lanzhou 730070China

The implementation of ecological Function Protection Zone(EFPZ)policy is significant for the ecological restoration and conservation of soil and water in the territory *** manuscript analyzed and quantified the impact of EFPZ on the regional water conservation function,based on land use data from 2005,2008,2010,2015 and 2020,by conducting a counterfactual simulation along with the GeoSOS-FLUS model and the InVEST *** results demonstrate that the delineation of EFPZ can significantly influence the water conservation.(1)From 2010 to 2020,as the EFPZ was implemented,the water conservation in the study area was increasing year by year,with a growth rate of 0.03×10^(8) m^(3)∙a^(-1).On the other hand,the simulated water conservation capacity without the implementation of EFPZ decreased year by year,with a decrease rate of 0.01×10^(8) m^(3)∙a^(-1).(2)The EFPZ accounts for only 23%of the total area,but the contribution rate of water conservation reaches 80%.The actual values of water conservation and average water yield per unit pixel in the EFPZ show an increasing trend both internally and externally,while the counterfactual simulation values exhibit a decreasing trend.(3)The water conservation is much higher within the EFPZ than without *** implementation of EFPZ has a significant effect on the improvement of the water conservation capacity in Maqu EFPZ and Yellow River Source *** protection effectiveness should be enhanced in Qilian Mountain EFPZ and afforestation activities need to be carefully considered in Loess Plateau EFPZ.

关键词： Water conservation function ecological Function Protection Zone Counterfactual simulation Geo SOS-FLUS model InVEST model

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The driving force of water resource stress change based on the STIRPAT model:take Zhangye City as a case study

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research in Cold and Arid Regions 2021年第4期13卷 337-348页

作者： Xia Tang XinYuan Wang Lei Feng Key Laboratory of Ecohydrology of Inland River Basin Chinese Academy of SciencesLanzhouGansu 730000China Northwest Institute of Eco-Environment and Resources Chinese Academy of SciencesLanzhouGansu 730000China ecological environmental Supervision and Administration Bureau of gansu province LanzhouGansu 730020China gansu Computing center LanzhouGansu 730030China

A prominent contradiction between supply and demand of water resources has restricted local development in social and economic aspects of Zhangye City,located in a typical arid region of *** study quantified the Water Resource Stress Index(WRSI)from 2003 to 2017 and examined the factors of population,urbanization level,GDP per capita,Engel coefficient,and water consumption per unit of GDP by using the extended stochastic impact by regression on population,affluence and technology(STIRPAT)model to find the key factors that impact WRSI of Zhangye City to relieve the pressure on water *** ridge regression method is applied to improve this model to eliminate multicollinearity *** WRSI system was developed from the following three aspects:water resources utilization(WR),regional economic development water use(WU),and water environment stress(WE).Results show that the WRSI index has fallen from 0.81(2003)to 0.17(2017),with an average annual decreased rate of 9.8%.Moreover,the absolute values of normalized coefficients demonstrate that the Engel coefficient has the largest positive contribution to increase WRSI with an elastic coefficient of 0.2709,followed by water consumption per unit of GDP and population with elastic coefficients of 0.0971 and 0.0387,*** contrast,the urbanization level and GDP per capita can decrease WRSI by−0.2449 and−0.089,*** decline of WRSI was attributed to water-saving society construction which included the improvement of water saving technology and the adjustment of agricultural planting ***,this study demonstrated the feasibility of evaluating the driving forces affecting WRSI by using the STIRPAT model and ridge regression analysis.

关键词： water resource stress index STIRPAT model driving force analysis water scarcity

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Bibliometric analysis of the status and trend of biological soil crusts research from 1912 to 2023

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research in Cold and Arid Regions 2024年第2期16卷 98-108页

作者： XiaoJu Yang FaSi Wu Long Li QingLin Guo ZongRen Yu SongCong Chen XueYong Zhao Naiman Desertification research Station Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China University of Chinese Academy of Sciences Beijing 100049China National research center for conservation of Ancient Wall Paintings and Earthen Sites Dunhuang AcademyDunhuangGansu 736200China gansu Provincial research center for conservation of Dunhuang Cultural Heritage DunhuangGansu 736200China Cultural Heritage conservation and Design Consulting Co. Ltd.of Mogao GrottoesDunhuangGansu 736200China

Biological soil crusts(BSCs)play an important role in soil development and ecological function,and it is more important for quantitatively analyzing the processes and trends of BSCs to identify the advantages and disadvantages of BSCs research for the development and application of BSCs *** analysis of 2,186 BSCs literatures from Web of Science showed an exponential growth trend,as China and the United States as the top 2 in terms of publication *** quality publications are mainly from European and American countries,such as the United States,Germany and *** top 3 publishers are Journal of Arid Environments,Soil Biology&Biochemistry and Plant and Soil,and disciplines include ecology,environmental science,and soil science,etc..research institutions mainly affiliate to the Chinese Academy of Sciences,United States Department of the Interior,United States Geological Survey,Hebrew University of Jerusalem,Consejo Superior de Investigaciones Cientificas,and Universidad Rey Juan *** mainly come from United States,Israel,Spain and *** are mainly from the National Natural Science Foundation of China,Spanish Government,Chinese Academy of Sciences,and National Science Foundation of the United *** soil crusts(biocrusts,cyanobacteria,lichens,moss crusts,bryophytes),drylands,climate change,photosynthesis and desert are high-frequency *** research will focus on the driving mechanisms of BSCs on global biogeochemical cycles,maintaining global biodiversity on important ecological processes,global C,N,and P *** impact on biological invasion,sandstorms,and water balance,multifunctional and reciprocal mechanisms for maintaining the stability of desert and sandy ecosystems,and impact on the formulation of management policies for arid ecosystems,corresponding to global climate change,and the estimation of regional,local,and microscale distribution of BSCs based on machine deep learning modeling gradually fo

关键词： Biological soil crusts Bibliometric analysis Web of science CiteSpace VOSviewer

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Drivers of soil erosion and subsurface loss by soil leakage during karst rocky desertification in SW China

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International Soil and Water conservation research 2022年第2期10卷 217-227页

作者： Xudong Peng Quanhou Dai College of Forestry Guizhou UniversityGuiyang550025China Institute of Soil Erosion and ecological Restoration Guizhou UniversityGuiyang550025China The Key Laboratory of Plant Resource conservation and Germplasm Innovation in Mountainous Region(Ministry of Education) Collaborative Innovation Center for Mountain Ecology&Agro-Bioengineering(CICMEAB)Research Center of Soil Erosion and Ecological RestorationGuizhou UniversityGuiyang550025China

As an extreme manifestation of environmental degradation,karst rock desertification is caused by soil loss and rock *** some areas with serious rocky desertification,there is no soil to be eroded or *** soil loss in these areas superimposes soil erosion and unique subsurface loss by soil leakage through fissures,pipelines,sinkholes,etc.,which directly reduce soil resources and accelerate rocky ***,the factors driving soil erosion and subsurface loss by soil leakage are still *** experiments were conducted on simulated slopes with surface-exposed bedrock and subsurface fissures based on field investigations in a karst rocky desertification area of Guizhou province,*** factors,including rainfall intensity,slope gradient,bedrock exposure rate and subsurface fissure degree,were considered in the *** found that the amount of soil surface erosion and subsurface leakage loss is driven not only by the runoff volume but also by other influential *** intensity is the driving factor determining the amount of surface erosion and subsurface leakage loss of soil and water and the relationship between *** slope gradient plays a leading role only in subsurface fissure flow leakage *** bedrock exposure rate drives the surface soil erosion rate,shows a critical value(30%),and dominates the fissure flow leakage loss *** fissure density plays an important role in the surface loss of soil and water;however,an increase in the subsurface fissure density does not obviously accelerate the subsurface leakage loss of soil and *** this result,obtained from laboratory simulations,may differ at the field scale or larger,it could provide a foundation for systematic studies on soil erosion/leakage and insights into the relations between rocky desertification and soil erosion/leakage and their driving factors in karst rocky desertification.

关键词： Driving factors Karst rocky desertification Soil erosion Subsurface leakage Southwest China

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Vegetation characteristics and soil properties of artificially remediated grasslands:The case study of the Shimenhe mining area in Qilian Mountains,northwest China

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research in Cold and Arid Regions 2024年第4期16卷 190-200页

作者： XiaoMei Yang Qi Feng Meng Zhu Key Laboratory of Ecohydrology of Inland River Basin Alax Desert Eco-hydrology Experimental Research StationQilian Mountains Eco-Environment Research Center in Gansu ProvinceNorthwest Institute of Eco-Environment and ResourcesChinese Academy of Sciences(CAS)LanzhouGansu 730000China

The mining of limestone mines plays a crucial role in societal and economic ***,mining activities have led to destructive variations in grassland ecology and soil,causing numerous environmental problems,and effective artificial restoration measures have been used to restore grasslands in the Shimenhe mining areas to different *** this study,we investigated,examined and analyzed plant community structure and its correlation with soil properties across varying degrees of alpine grassland restoration in Qilian Mountains Shimenhe restoration mines using the sample method,and studied the changes in species diversity using five diversity indexes(Simpson index,Shannon index,Margalef index,Dominance index and Evenness index).This study showed that the plant community characteristics with high recovered degree(HRD)> middle recovered degree(MRD)> low recovered degree(LRD)> very low recovered degree(VLRD),11 plant genera comprising 11 species across 10 families were *** families with robust ecological adaptability included Leguminosae,Rosaceae,Gramineae,Asteraceae,and *** highest Simpson,Shannon,Margalef and Evenness index of HRD grassland community species were 0.82,1.96,1.66 and 0.89,*** highest Dominance index of VLRD grassland community species was 0.34,which required several restoration methods such as spraying and *** pH and EC tended to decrease with increasing restoration,SOC,SMC,TP,AP,NH4-N,TN,AN and NO3-N tended to increase and the content of soil environmental factors contributed to vegetation growth across various restoration levels the mine *** conclusion,our study indicated that the community structure gradually diversified and soil properties changed positively with the increase of restoration degrees in the Qilian Mountains Shimenhe mine,and the best results of HRD restoration were *** study provides the theoretical basis for the restoration and conservation of grassland

关键词： Alpine mining area grassland Grassland ecosystem Mine restoration Plant characteristics Soil properties Qilian mountains

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construction of TiO_(2)-covalent organic framework Z-Scheme hybrid through coordination bond for photocatalytic CO_(2) conversion

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Journal of Energy Chemistry 2022年第1期31卷 85-92,I0003页

作者： Lei Wang Guofang Huang Liang Zhang Rui Lian Jingwei Huang Houde She Chunli Liu Qizhao Wang Key Laboratory of Eco-Environment-Related Polymer Materials Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional MaterialsCollege of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhou 730070GansuChina Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of EducationSchool of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025HeilongjiangChina School of environmental Science and Engineering Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of EducationChang'an University.Xi'an 710054ShaanxiChina Department of Physics Oxide Research Centerand Memory and Catalyst Research CenterHankuk University of Foreign StudiesYongin 17035Republic of Korea

In this work,a covalent organic framework(COF),which is constructed by the building blocks of[5,10,15,20-tetrakis(4-aminophenyl)porphinato]copper(Ⅱ)(CuTAPP)and p-benzaldehyde,is employed to integrate with TiO_(2) for the purpose of establishing a Z-scheme *** the system,isonicotinic acid performs the role of a bridge that connects the two components through a coordination *** photocatalytic application reveals the hybrid framework is able to catalyze CO_(2) conversion under simulated solar light,resulting in CO production rate of 50.5 μmol g^(-1)·h^(-1),about 9.9 and 24.5 times that of COF and pristine TiO_(2),*** ameliorated catalytic performance owes much to the por-phyrin block acting as photosensitizer that augments the light absorbance,and the establishment of Z-scheme system between the inorganic and orga nic comp on ents that enhances the separati on of the *** addition,the chemical bridge also ensures a steady usage and stable charge delivery in the *** study sheds light on the development of versatile approaches to covalently in corporate COFs with inorga nic semic on ductors.

关键词： CuP-Ph COF TiO_(2) Sensitization Z-scheme CO_(2)reduction Photocatalysis

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Classification of Salt Marsh Vegetation in the Yangtze River Delta of China Using the Pixel-Level Time-Series and XGBoost Algorithm

Journal of Remote Sensing

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Journal of Remote Sensing 2023年第1期3卷 110-124页

作者： Jiahao Zheng Chao Sun Saishuai Zhao Ming Hu Shu Zhang Jialin Li Department of Geography and Spatial Information Techniques School of Civil&Environmental Engineering and Geography ScienceNingbo UniversityNingboZhejiang Province 315211China Key Laboratory of Coastal Zone Exploitation and Protection Ministry of Natural ResourcesNanjingJiangsu Province 210023China Zhejiang Collaborative Innovation center&Ningbo Universities Collaborative Innovation center for Land and Marine Spatial Utilization and Governance research NingboZhejiang Province 315211China Ningbo Institute of Surveying Mapping and Remote SensingNingboZhejiang Province 315040China

Salt marshes are one of the world's most valuable and vulnerable *** accurate and timely monitoring of the distribution and composition of salt marsh vegetation is *** the increasing number of archived multi-source images,the time-series remote sensing approach could play an important role in monitoring coastal ***,effective construction and application of the time series over coastal areas remains challenging because satellite observations are severely affected by cloud ***,we constructed a pixel-level time series by intercalibrating the Landsat images from different *** on the time series,the XGBoost algorithm was introduced for salt marsh vegetation *** feasibility and stability for the classification using the pixel-level time-series and XGBoost algorithm(PTSXGB)were *** types of salt marsh vegetation from the 3 sites in the Yangtze River Delta,China,were *** results demonstrated that(a)the intercalibration for the Landsat images from different sensors is necessary for increasing the number of available observations and reducing the differences among spectral reflectances.(b)The salt marsh vegetation classification using PTSXGB achieved a favorable performance,with an overall accuracy of 81.37±2.66%.The classification was especially excellent for the widespread Spartina alterniflora and Scirpus mariqueter.(c)Compared with the classifications using single images,the classifications using PTSXGB were more stable for different periods,with the mean absolute difference in the overall accuracy less than 3.90%.Therefore,PTSXGB is expected to monitor salt marsh vegetation's longterm dynamics,facilitating effective ecological conservation for the coastal areas.

关键词： XGBoost Delta coastal

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