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Assessment of effectiveness of nature reserves on the Tibetan Plateau based on net primary production and the large sample comparison method

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Journal of Geographical Sciences 2016年第1期26卷 27-44页

作者：张镱锂胡忠俊祁威吴雪摆万奇李兰晖丁明军刘林山王兆锋郑度 key laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchCAS CAS Center for Excellence in Tibetan Plateau Earth Sciences University of Chinese Academy of Sciences key laboratory of poyang lake wetland and watershed research Ministry of EducationJiangxi Normal University

Twenty-one typical coupled large samples were chosen from areas within and surrounding nature reserves on the Tibetan Plateau using the large sample comparison method(LSCM).To evaluate the effectiveness of the nature reserves in protecting the ecological environment,the alpine grassland net primary production(NPP) of these coupled samples were compared and the differences between them before and after their establishment as protected areas were *** results showed that:(1) With respect to the alpine grassland NPP,the ecological and environmental conditions of most nature reserves were more fragile than those of the surrounding areas and also lower than the average values for the Tibetan Plateau.(2) Of the 11 typical nature reserves selected,the positive trend in the NPP for Manzetang was the most significant,whereas there was no obvious trend in *** the exception of Selincuo,the annual NPP growth rate in the nature reserves covered by alpine meadow and wetland was higher than that in nature reserves consisting of alpine steppe and alpine desert.(3) There were notable findings in 21 typical coupled samples:(a) After the establishment of the nature reserves,the annual rate of increase in the NPP in 76% of samples inside nature reserves and 82% of samples inside national nature reserves was higher than that of the corresponding samples outside nature reserves.(b) The effectiveness of ecological protection of the Mid-Kunlun,Changshagongma,Zoige and Selincuo(Selin Co) nature reserves was significant; the effectiveness of protection was relatively sig-nificant in most parts of the Sanjiangyuan and Qiangtang nature reserves,whereas in south-east Manzetang and north Taxkorgan the protection effectiveness was not obvious.(c) The ecological protection effectiveness was significant in nature reserves consisting of alpine meadow,but was weak in nature reserves covered by alpine *** study also shows that the advantage of large sample comparison method

关键词： nature reserves protection effectiveness large sample comparison method net primary production Tibetan Plateau

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Rice(Oryza sativa L.)seedlings enriched with zinc or manganese:Their impacts on cadmium accumulation and expression of related genes

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Pedosphere 2021年第6期31卷 849-858页

作者： Gaoxiang HUANG Changfeng DING Yibing MA Yurong WANG Zhigao ZHOU Shun'an ZHENG Xingxiang WANG key laboratory of Soil Environment and Pollution Remediation Institute of Soil ScienceChinese Academy of SciencesNanjing 210008(China) School of Geography and Environment Key Laboratory of Poyang Lake Wetland and Watershed ResearchMinistry of EducationJiangxi Normal UniversityNanchang 330022(China) Macao Environmental research Institute Macao University of Science and TechnologyTaipa 999078Macao(China) Rural Energy and Environment Agency Ministry of Agriculture and Rural AffairsBeijing 100125(China) Ecological Experimental Station of Red Soil Chinese Academy of SciencesYingtan 335211(China) University of Chinese Academy of Sciences Beijing 100049(China)

Cadmium(Cd)contamination in paddy soils means that the rice produced there may be unsafe for human consumption.A hydroponic study was conducted to enrich rice seedlings with zinc(Zn)or manganese(Mn),and the uptake and transport characteristics of Cd in these Zn-and Mn-rich seedlings were subsequently investigated using a greenhouse pot *** results showed that hydroponic cultivation in 10-50μmol L^(-1) Zn(ZnSO_(4)·7 H_(2)O)or50-250μmol L^(-1) Mn(MnSO_(4)·H_(2)O)for 30 d had no significant impact on rice growth,while the accumulation of Zn and Mn was 7.31-18.5 and 25.4-47.7 times higher,respectively,than in the control(no Zn or Mn addition).The accumulation of Cd in the Zn-and Mn-rich rice plants was 26.3%-38.6% and 34.4%-44.5% lower than that in the control,respectively,and the translocation factors of Cd from roots to shoots also decreased by 23.3%-41.3% and 25.3%-37.0%,respectively,after transplanting to Cd-contaminated ***,the relative expression levels of OsIRT1(Oryza sativa iron-regulated transporter 1)were downregulated by 40.1%-59.3% and 16.0%-25.9%,respectively,in the Zn-and Mn-rich seedling *** downregulation may indicate a possible mechanism contributing to the reductions in Cd *** experiments confirmed that the Zn-and Mn-rich seedlings produced brown rice(unpolished rice grains)with significantly decreased concentrations of Cd(34.2%-44.4%).This study provides an innovative method for reducing the food safety risks from rice grown on slightly to moderately Cd-contaminated paddy soils.

关键词： absorption enrichment Cd contamination contaminated paddy soil gene expression hydroponics translocation factor

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The Extent and Effectiveness of Protected Areas in the Russian Federation

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Journal of Geodesy and Geoinformation Science 2022年第2期5卷 75-84页

作者： Kseniia SERGEEVA Hui LIN School of Geography and Environment/UNESCO HIST-NB Jiangxi Normal UniversityNanchang 330022China key laboratory of poyang lake wetland and watershed research ministry of education Nanchang 330022China

To tackle environmental challenges and in particular,the problems associated with the high demand for forests and resources,the consequence of which is the degradation of ecological systems,Russia has developed the biggest network of specially protected natural areas in the *** the scale of SPNA may look impressive,a recent comprehensive study of the period from 2001 to 2018 brought the spotlight on protected areas in Russia experiencing significant tree loss *** Russia is confronting unprecedented fires that break records every year,the problem of preserving rare animal and plant species,their habitats,and natural ecosystems is *** paper is intended to assess the extent and effectiveness of SPNAs with regard to wilderness conservation in the Russian Federation based on the latest data;the main focus being on the period of 2014—2019,before and after the launch of the environmental safety strategies,along with additional analysis of available data for the following year of *** due consideration of unique geographical,economic,and socio-cultural circumstances,as well as historical background and legislative reality of SPNAs in Russia,we have conducted a statistical analysis of data from the official annual reports from the Federal State Statistics Service on SPNAs by territories and significance,expenditures on maintenance and ecotourism,followed by RGB analysis of satellite imagery via means of GIS software for visualization of obtained data and further *** the growth of the SPNA network in Russia,resulting in an astonishing 2402 Mha in 2020,an estimated 4 Mha of tree loss accounted for SPNAs over the period of 2014—2019,and 134 Mha in 2020 *** findings indicate a need for the application of a comprehensive GIS approach for further development and effective management of the SPNA network in ***,the results include recommendations on legislative changes,engagement of locals in SPNA protection,and po

关键词： GIS remote sensing protected area SPNA nature conservation deforestation tree loss

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Multi-regional observations and validation of the M_(3)ocean tide

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Science China Earth Sciences 2023年第10期66卷 2265-2277页

作者： Adam Thomas DEVLIN Jiayi PAN Déborah IDIER School of Geography and Environment Jiangxi Normal UniversityNanchang330022China Cooperative Institute for Marine and Atmospheric research School of Ocean and Earth Science and TechnologyUniversity of Hawai’i at MānoaHonoluluHI96822USA Department of Oceanography University of Hawai’i at MānoaHonoluluHI96822USA The Chinese University of Hong Kong Hong Kong999077China key laboratory of poyang lake wetland and watershed research of ministry of education Nanchang330022China BRGM Orléans45060France

Improved determinations of the oft-ignored third-degree ocean tides can yield better accuracy for tidal predictions,numerical model solutions,and *** only a small part of tidal range,these components can be larger at certain coastal locations due to shelf resonances and other ***,we discuss observations of the M3lunar terdiurnal tide using 9-year windowed tidal harmonic analyses at 157 tide gauges compares to a global assimilation model(TPXO9v5a),with a focus on the Western Pacific and the European ***9v5a does well in estimating the observed M_(3)amplitudes and phase lags in most regions,though determinations in coastal zones and in morphologically complex areas are coarse and often *** also employ a shallow-water model(MARS)on the European Shelf,which can yield localized improvement over *** five subregions of the European Shelf,regional root-mean-squared-errors(RMSEs)are lower(and thus a better fit)at three locations for TPXO for amplitudes,and three for phase lags,with MARS simulations being a better fit in the other *** also show that some locations have experienced significant long-term increases and/or decreases in the M_(3)amplitude over time,likely related to resonance changes under sea level rise(SLR)which can modulate the oceanic response to astronomical *** hypothesis is explored for Europe using the MARS model by applying various sea level rise scenarios,showing that the directionality(positive or negative)of the long-term changes in M_(3)amplitudes over time match the model results for more than half of our validation stations.

关键词： Third-degree tides M_(3)tide Altimetry Numerical simulation Sea level rise

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Where are large old trees in China

Where are large old trees in China

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中国植物学会第十六次全国会员代表大会暨85周年学术年会

作者： Jiajia Liu Wenjing Yang Yuan Ren Yangqing Luo Lei Zhong Chuping Wu Mingjian Yu College of Life Sciences Zhejiang University key laboratory of poyang lake wetland and watershed research Ministry of EducationJiangxi Normal University Zhejiang Academy of Forestry

Large old trees have received worldwide interests in recent years as they are keystone ecological structures that provide vital ecosystem services to human ***,there has been little empirical evidence on the distribution pattern of large old trees in human dominated *** we used 703,155 large trees that are ≥ 100 years in 198 Chinese cities to map their distribution patterns（richness,density and maximum tree age） and to explore the relative contributions of natural environmental（*** and topography） and anthropogenic variables（*** density,GDP per capita and city age）.We found that China has a low stem density of large old trees: 0.36 stem/*** of these trees were reported to be less than 300 years *** best fit models demonstrated that mean annual rainfall is the most important driver of species diversity and density of scattered large old *** influence is a double-edged sword for the conservation of large old *** density of clustered trees,which are mostly remnants of ancient woods,is negatively influenced by human population and rural *** contrast,stem density of scatter trees,which are mostly distributed in human dominated landscapes,is positively correlated with population *** age is the only driver of the maximum tree *** results have provided the first empirical study on the distribution pattern of large old trees in *** conclude that distribution pattern of large old trees in the human dominated landscapes is the consequence of the joint effects of environmental variables and anthropogenic *** of large old trees should consider climate change and the promotion of large old tree protection culture.

关键词： Large trees ancient trees biodiversity anthropogenic factors scattered trees traditional culture

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Contaminant removal from low-concentration polluted river water by the bio-rack wetlands

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Journal of Environmental Sciences 2012年第6期24卷 1006-1013页

作者： Ji Wang Lanying Zhang Shaoyong Lu Xiangcan Jint Shu Gan key laboratory of Groundwater Resources and Environment Ministry of EducationJilin UniversityChangchun 130021China State Environmental Protection key laboratory for lake Pollution Control Engineering and Technology Center of LakeResearch Center of Lake EnvironmentChinese Research Academy of Environment SciencesBeijing 100012China College of Resources and Environment Hunan Agriculture UniversityChangsha 410128China

The bio-rack is a new approach for treating low-concentration polluted river water in wetland systems.A comparative study of the efficiency of contaminant removal between four plant species in bio-rack wetlands and between a bio-rack system and control system was conducted on a small-scale （500 mm length × 400 mm width × 400 mm height） to evaluate the decontamination effects of four different wetland *** was generally a significant difference in the removal of total nitrogen （TN）,ammonia nitrogen （NH 3-N） and total phosphorus （TP）,but no significant difference in the removal of permanganate index （COD Mn） between the bio-rack wetland and control ***-rack wetland planted with Thalia dealbata had higher nutrient removal rates than wetlands planted with other *** fine-root （root diameter 3 mm） biomass rather than total plant biomass was related to nutrient removal *** study suggested that the nutrient removal rates are influenced by plant species,and high fine-root biomass is an important factor in selecting highly effective wetland plants for a bio-rack *** to the mass balance,the TN and TP removal were in the range of 61.03-73.27 g/m^2 and 4.14-5.20 g/m^2 in four bio-rack wetlands during the whole operational *** N and P removal by plant uptake constituted 34.9%-43.81% of the mass N removal and 62.05%-74.81% of the mass P *** study showed that the nitrification/denitrification process and plant uptake process are major removal pathways for TN,while plant uptake is an effective removal pathway for TP.

关键词： bio-rack constructed wetland fine-root biomass low-concentration polluted river water plants uptake

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Versioned geoscientific workflow for the collaborative geosimulation of human-nature interactions-a case study of global change and human activities

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International Journal of Digital Earth 2021年第4期14卷 510-539页

作者： Yuting Chen Hui Lin Ling Xiao Qi Jing Lan You Yulin Ding Mingyuan Hu Adam Thomas Devlin Institute of Space and Earth Information Science The Chinese University of Hong KongHong KongPeople’s Republic of China key Lab of poyang lake wetland and watershed research of ministry of education/School of Geography and Environment Jiangxi Normal UniversityNanchangPeople’s Republic of China School of Computer Science and Information Engineering Hubei UniversityWuhanPeople’s Republic of China School of Earth Science and Environmental Engineering Southwest Jiaotong UniversityChengduPeople’s Republic of China

Global change refers to changes in the relationship between humans and *** is desirable to actively integrate human social activities into the unified framework of global change so that their mutual relations and functional mechanisms can be *** complicated issue necessitates an appropriate method allowing domain experts to collaboratively contribute their knowledge to geoscientific ***,an efficient approach to optimize experimentation is of great *** reproducibility of research methods and results needs to be improved to boost the sharing of geographic knowledge and *** paper proposes a versioned geoscientific workflow and characterizes its full lifecycle using Virtual Geographic Environments,intending to facilitate and improve research related to the interactions between global change and human *** geoscientific workflow management is realized using the concept of version management,making geographic simulation methods and computational results easily reproducible and *** sharing and reuse of geographic knowledge in various forms are archived through version management of geoscientific workflows.A versatile prototype system is implemented which enables the visual modeling of geoscientific workflows,the interactive optimization and collaborative evaluation of geoscientific workflows at runtime,the multi-dimensional dynamic visualization of geo-workflow outputs,and role-based access control for data security.

关键词： Geoscientific workflow geographic simulation version management global change virtual geographic environment

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Constructing built-in electric field via Cu O/Ni O heterojunction for electrocatalytic reduction of nitrate at low concentrations to ammonia

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Chinese Chemical Letters 2024年第12期35卷 349-354页

作者： Ying Chen Xingyuan Xia Lei Tian Mengying Yin Ling-Ling Zheng Qian Fu Daishe Wu Jian-Ping Zou key laboratory of poyang lake Environment and Resource Utilization Ministry of EducationSchool of Resources&EnvironmentNanchang University National-Local Joint Engineering research Center of Heavy Metals Pollutants Control and Resource Utilization School of Environmental and Chemical EngineeringNanchang Hangkong University School of Materials and Chemical Engineering Pingxiang University

Electrocatalytic reduction of nitrate （NO3-） at low concentrations to ammonia （NH4+） still faces chal lenges of low NO3-conversion and NH4+selectivity due to the sluggish mass transfer and insufficien atomic hydrogen （H*） ***,we propose CuO/NiO heterojunction with the assistance of a built-in electric field to enhance mass transfer and H**** built-in electric field in Cu O/Ni O is success fully formed as demonstrated by X-ray photoelectron spectroscopy and ultraviolet photoemission spec *** results reveal that Cu O/Ni O achieves high NO3-reduction activity （100%） and NH4+selec tivity （100%） under low NO3-concentration conditions （100 mg/L NO3-,ca.22.6 mg/L NO3--N）,which i superior to that of many recently reported *** functional theory calculations furthe clarify that the built-in electric field triggers the enhanced adsorption of reactants on CuO/NiO hetero junction interface and strong d-p orbital hybridization between reactants and CuO/***,the free energy diagram of hydrogen evolution reaction of CuO/NiO confirms the realization of enhanced H*pro ***,coupling experiments and consecutive cycle tests demonstrate the potential of CuO/NiO in practical *** work may open up a new path and guide the development of efficien electrocatalysts for electrocatalytic reduction of NO3-at low concentrations to NH4+.

关键词： Electrocatalytic reduction of NO3- NH4+ selectivity Built-in electric field H* Low concentrations

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Effects of habitat configuration on biodiversity along gradients of forest cover on the Swiss Plateau

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Forest Ecosystems 2024年第5期11卷 659-669页

作者： Yiwen Pan Anna M.Hersperger Gang Ge Michael P.Nobis key laboratory of poyang lake Environment and Resource Utilization Ministry of EducationSchool of Resources&EnvironmentNanchang UniversityNanchang330031China Swiss Federal Institute for Forest Snow and Landscape Research WSLZürcherstrasse 1118903BirmensdorfSwitzerland School of Life Sciences Nanchang UniversityNanchang330031China

The negative effects of habitat loss on biodiversity are undisputed,while the effect of habitat configuration,i.e.,the spatial arrangement of habitat area,has been debated for *** develop a more comprehensive understanding,it is important to know when and how configuration *** this study,we tested whether forest configuration influences the richness of species in groups characterized by varying shade tolerance in different ways and how such effects are related to habitat amount(i.e.,the percentage of forest cover)at the landscape *** on 104 survey plots(each measuring 1km^(2))of vascular plants on the Swiss Plateau,and using two statistical approaches(i.e.,multiple regression and path analysis),we modeled the effects of habitat amount and configuration(measured as number of forest patches,total edge length,and proximity index)across all the plots and separately for three habitat amount classes:30%forest *** we modeled all plots together,we found that,after controlling for habitat amount,the forest configuration significantly affected species *** we considered the different habitat amount classes separately,most of the significant effects of habitat configuration on species richness occurred only for habitat amounts of<10%forest ***,the response to forest configuration differed among species with different shade *** forest area was<10%,the effects of the number of patches and the total edge length on the species richness of light-demanding forest species were greater than the effect of habitat amount,whereas neither configuration metric affected the richness of shade-tolerant *** conclusion,our findings highlight the importance of configuration in landscapes with a small amount of *** the same time,they demonstrate that considering the confounding factors(*** traits)is important for understanding the effects of forest configuration on biodiversity and that genera

关键词： Forest plants Habitat amount Landscape fragmentation Species richness Swiss Plateau

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PLFA Analysis of Soil Microbial Community Structure in Different Forest Types

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American Journal of Plant Sciences 2024年第10期15卷 930-939页

作者： Jiayi Zhang Songzhe Li Xiangping Fu Shunbao Lu Yanjie Zhang Jiangxi Provincial key laboratory of Soil Erosion and Prevention Nanchang China College of Life Sciences Key Laboratory of Poyang Lake Wetland and Watershed Research Ministry of Education Jiangxi Normal University Nanchang China College of Foreign Languages Jiangxi Agricultural University Nanchang China

Soil soluble organic matter is an important component in the study of carbon and nitrogen cycling in terrestrial ecosystems. Soil microorganisms, as soil decomposers, participate in soil biogeochemical processes and play an important role in maintaining the balance of soil ecosystems. As a typical subtropical regional unit, Queensland, Australia, is a relatively concentrated distribution area of forests in Australia. It is very sensitive to climate change and plays an important role in Australian climate and even global climate change. Its unique natural environment and ecosystem occupy a special position in the world. However, the knowledge of available carbon and nitrogen pool and microbial activity in forest soil is still very limited. Pinus elliottii, Araucaria cunninghamii and Agathis australis are the three most important forest types in southern Queensland, Australia. In our research, the function and structural diversity of soil microbial communities of these three forest types were studied using biochemical and molecular biological methods, and the effective carbon and nitrogen pools of soil of different forest types and related microbial processes were discussed, which has important theoretical guiding significance for further research on the structure and function of soil ecosystem. The number of PLFAs in the soil of P. elliottii was 45, the number of PLFAs in the soil of Araucaria cunninghamii and Agathis australis was 39 and 35, respectively. The number and content of PLFAs monomer in P. elliottii were higher than those in the other two kinds of forest soil.

关键词： Forest Type Soil Microbial Community PLFA

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