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Ceratopteris chunii and Ceratopteris chingii(Pteridaceae),two new diploid species from China,based on morphological,cytological,and molecular data

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Plant Diversity 2022年第3期44卷 300-307页

作者： Jun-Hao Yu Rui Zhang Qiao-Ling Liu Fa-Guo Wang Xun-Lin Yu Xi-Ling Dai Yong-Bo Liu Yue-Hong Yan Eastern China Conservation Centre for Wild Endangered Plant Resources Shanghai Chenshan Botanical GardenShanghai 201602China College of Life Science Shanghai Normal UniversityShanghai200234China Shenzhen Key Laboratory for Orchid Conservation and Utilization National Orchid Conservation Center of China and the Orchid Conservation&Research Center of ShenzhenShenzhen518114China Guangdong Provincial Key Laboratory of Applied Botany South China Botanical GardenChinese Academy of SciencesGuangzhou510650China College of Forestry Central South University of Forestry&TechnologyChangshaHunan410004China State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment Chinese Research Academy of Environmental SciencesBeijing100012China

Understanding how natural hybridization and polyploidizations originate in plants requires identifying potential diploid ***,cryptic plant species are widespread,particularly in Ceratopteris(Pteridaceae).Identifying Ceratopteris cryptic species with different polyploidy levels is a challenge because Ceratopteris *** high degrees of phenotypic ***,two new cryptic species of Ceratopteris,Ceratopteris chunii and Ceratopteris chingii,are described and *** analyses reveal that each of the new species form a well-supported *** and *** are similar to Ceratopteris gaudichaudii *** and ***,respectively,but distinct from their relatives in the stipe,basal pinna of the sterile leaf or subelliptic shape of the fertile leaf,as well as the spore *** addition,chromosome studies indicate that *** and *** are both *** findings will help us further understand the origin of Ceratopteris polyploids in Asia.

关键词： Ceratopteris Phylogeny Chromosome Taxonomy Cryptic species

Plasticity Response Of Desert Shrubs To Extreme Drought Events At Different Phenophases Under the Context of Climate Change

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SSRN 2024年

作者： Wang, Chunyuan Yu, Minghan Ding, Guodong Quan, Zhanjun State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China State Key Laboratory of Environmental Protection for Regional Eco-Process and Function Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China Institute of Ecology Chinese Research Academy of Environmental Sciences Beijing100012 China Yanchi Research Station School of Soil and Water Conservation Beijing Forestry University Beijing100083 China Key Laboratory of State Forestry Administration on Soil and Water Conservation Beijing Forestry University Beijing100083 China

Desert ecosystems are expected to suffer from extreme drought events with unprecedented frequency and magnitude amidst the current situation of severe droughts and erratic seasonal rainfall induced by global climate change. Against this background, it is essential to elucidate the differences in the plasticity response of typical desert vegetation to extreme drought events at different phenophases for predicting the response of desert ecosystems to climate change. Taking the typical subshrub Artemisia ordosica community in the Mu Us Desert as the research object, this study simulated the extreme drought events via controlling rainfall at the sample plot scale, setting up three extreme drought treatment gradients in phenophases. This paper aimed to investigate the differences in the impacts of extreme drought events at different phenophases on the phenotypic characteristics and functional traits of A. ordosica, as well as the trade-off response mechanism of its twig number and length, and nutrient reproduction allocation to extreme drought events. Results showed that (1) Phenotypic characteristics of A. ordosica decreased significantly under extreme drought events at each phenophase, while the number and length of twigs declined, thereby lowering the accumulation of ANPP;the impacts of the extreme drought events on ANPP accumulation of A. ordosica at each phenophase were as follows: flowering and fruiting stage > sprouting stage > vegetative growth stage. (2) The number and length of twigs of the current year showed a significant positive correlation under extreme drought conditions. (3) A. ordosica would adapt to extreme drought via increasing the proportion of reproductive growth and decreasing the proportion of vegetative growth during both sprouting and vegetative growth stages. This study has demonstrated the varying impacts on phenotypic characteristics and functional traits of A. ordosica by extreme drought at each phenophase, and A. ordosica possesses a plast

关键词： Drought

Enhanced Nutrient Cycling in Solar Park Induced by Soil Indicator Taxa, Microbial Biomass and Metabolic Efficiency Improve the ecosystem Multifunctionality in Arid Region

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SSRN 2023年

作者： Liu, Yu Ding, Chengxiang Wang, Tiemei Su, Derong Li, Zhuoqing Feng, Chaoyang Quan, Zhanjun Institute of Ecology Chinese Research Academy of Environmental Sciences Beijing100012 China State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment Beijing100012 China State Key Laboratory of Environmental Criteria and Risk Assessment Beijing100012 China School of Grassland Beijing Forestry University Beijing100083 China Academy of Animal Science and Veterinary Medicine Qinghai University Xining810016 China

The drive towards clean energy sources has prompted the worldwide construction of emerging photovoltaic solar parks. The intense Despite the advantages of lower pollutant and greenhouse gas emissions, the construction of solar parks (SP) is not without environmental and ecological consequences due to changes in land use and impacts on regional climate. Previous studies have reported that SP construction impacts microclimate, plant biomass, biodiversity, soil physicochemical properties, and soil microbial community structure. However, our understanding of how SP influences a wide range of ecosystem functions simultaneously remains incomplete. To address this gap, we assessed the changes in ecosystem multifunctionality (EMF) in SP habitats in arid ecosystem, by measuring twenty-three indicators related to ecosystem functions comprising primary production, soil nutrient pool, carbon cycling, nitrogen cycling, phosphorus cycling and oxidation-reduction. Furthermore, we identified the primary driving factors and regulatory mechanism of EMF in different periods since SP installation. The results showed that SP had positive effects on EMF indices, the positive effect size was higher in initial installation period (5.4%-149.0%) than in constant running period (0.4%-15.3%). The enhancement in EMF were mainly due to the enhanced nutrient cycling induced by increased abundance of fungal indicator taxa (Indicator) as well as microbial biomass and metabolic efficiency (MBM) according to the results of variance decomposition analysis and multiple linear regression. Moreover, the structural equation model revealed distinct regulatory mechanism between the two period, and a transition in the primary driving factors of EMF from Indicator to MBM. Together, our study reveals the different effect size of SP on EMF and changes in driving factor and regulatory mechanism of EMF during the different periods following SP installation. These findings complement the environmental impact analy

关键词： ecosystems

A Comparative Study on Aggregation and Sedimentation of Natural Goethite and Artificial Fe3o4 Nanoparticles in Synthetic and Natural Waters

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SSRN 2022年

作者： Wu, Aiming Zhao, Xiaoli Yang, Chunyan Wang, Junyu Wang, Xia Liang, Weigang Zhou, Lingfeng Teng, Miaomiao Niu, Lin Tang, Zhi Hou, Guoqing Wu, Fengchang College of Environment Hohai University Nanjing210098 China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China State Environment Protection Key Laboratory of Regional Eco-Process and Function Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China

Natural iron oxides nanomaterials have important roles in biogeochemical processes. In this study, the effects of pH, natural organic matter, and cations on aggregation and sedimentation of natural goethite and artificial Fe3O4 nanoparticles in water were investigated to learn more about the environmental behaviors of engineered and natural nanomaterials and how they differ. In addition, a novel extended DLVO theory that considered steric, gravitational, and magnetic attraction forces concurrently was specifically developed to provide mechanisms explanations. Specifically, Fe3O4 NPs were more likely than bulk goethite to aggregate (because of magnetic attraction interactions) at low HA concentrations and disperse at high HA concentrations. Besides, goethite was less prone to settle with the same concentration of NaCl than Fe3O4 NPs, but the opposite trend was found for the same concentration of CaCl2 because of the difference in maximum net energy (barrier) and strong Ca2+ bridging effectiveness of goethite in CaCl2 solution. Statistical models were established to evaluate colloidal stability of the particles. XPS and molecular dynamics simulation results suggested that ions were adsorbed onto particles via ionic polarization and that the binding free energies at high coverage followed the order Ca2+ > Na+ > Cl- and presence of cation bridging between particles. © 2022, The Authors. All rights reserved.

关键词： Positive ions

Waterbird Diversity and Influencing Factors in Various Types of Coastal Wetlands Around the Bohai Sea

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SSRN 2024年

作者： Mengdi, Fu Chunfei, Hou Jun, Wang Yuanyuan, Zhang Jiade, Bai Key Laboratory of Regional Eco-Process and Function Assessment and State Environment Protection Chinese Research Academy of Environmental Sciences 8 Anwai Dayangfang Chaoyang District Beijing100012 China Center for Biodiversity and Nature Reserve Chinese Academy of Environmental Planning Beijing100041 China Beijing Biodiversity Conservation Research Center Beijing100076 China Beijing Milu Ecological Research Center Beijing100076 China

China's coastal wetlands provide important breeding, migratory stopover and wintering areas for birds in the East Asian-Australasian flyway, and the Bohai Rim wetlands are one of the most important distribution areas for waterbirds. Seventeen coastal wetlands around the Bohai Sea were selected to investigate the diversity of waterbirds, clarify the community composition and its temporal and spatial changes, and analyze the main factors influencing waterbird diversity in different types of coastal wetlands. The results showed that 133 species of waterbirds, representing 18 families from 8 orders, were observed, mainly in the families Scolopacidae, Charadriidae and Laridae. From 2018 to 2023, the species, abundance and diversity of waterbirds fluctuated and increased, while the evenness showed a fluctuating and decreasing trend. PM2.5 and the construction of protected areas were the key factors influencing waterbird diversity, and vegetation cover, macroinvertebrates biodiversity index, population density and temperature were the main factors influencing waterbird diversity. PM2.5 was the most important factor influencing waterbird diversity in estuarine wetlands, followed by population density. Population density and vegetation cover were the most important factors influencing waterbird diversity in island wetlands, followed by the establishment of nature reserves. Population density was the most important factor influencing waterbird diversity in tidal wetlands, followed by the establishment of nature reserves. PM2.5 was the most important factor influencing waterbird diversity in shallow sea wetlands, followed by eutrophication. The results of this study are intended to provide a basis for scientific decision-making and precise policy implementation for the conservation of wetland bird diversity. © 2024, The Authors. All rights reserved.

关键词： Wetlands

Redevelopment of urban brownfield sites in China:Motivation,history,policies and improved management

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eco-Environment & Health 2022年第2期1卷 63-72页

作者： Yiming Sun Hong Li Shuo Lei Kirk TSemple Frederic Coulon Qing Hu Jingyang Gao Guanlin Guo Qingbao Gu Kevin C.Jones State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences100012BeijingPR China Lancaster Environment Centre(LEC) Lancaster UniversityLancasterLA14YQUK Centre for Ecology and Hydrology Library AvenueBailriggLancaster LA14APUK State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment Chinese Research Academy of Environmental Sciences100012BeijingPR China School of Water Energy and EnvironmentCranfield UniversityMK430ALUK Southern University of Science and Technology 518055ShenzhenGuangdongPR China Beijing Huanding Environmental Big Data Institute 100083BeijingPR China Technical Centre for Soil Agricultural and Rural Ecology and EnvironmentMinistry of Ecology and Environment100012BeijingPR China

Rapid urbanisation in China has resulted in an increased demand for land in towns and *** upgrade and modernise,China has also moved many major industries from urban centres to less populated *** the high economic value of urban land,the transformation and utilisation of brownfield areas have become important economically and *** Chinese government has recognised the need for strong frameworks to safeguard soil and groundwater quality,with brownfield sites a key category for *** scientific,regulatory and decision-making frameworks are needed and being adopted to ensure practical,careful and wise use of central and localised government resources,to manage the reuse and regeneration of these brownfield *** paper reviews the context,policies and management procedures of developing brownfield sites in countries with a history of brownfield management and discusses China’s current situation and priorities for brownfield governance and *** include(1)clarification of brownfield site soil contamination risk control standards and risk assessment procedures,(2)the responsibilities of different national and local agencies,(3)the establishment of a national expert committee to advise on best practices,policy and process,(4)the use of registered brownfield databases at national,provincial,municipal and county levels,and(5)the set up of soil pollution prevention fund at the provincial level.

关键词： Brownfield Urban soils Management China USA UK

Nitrogen Addition Enhances Tree Radial Growth But Weakens its Recovery from Drought Impact in a Temperate Forest in Northern China

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SSRN 2023年

作者： Cao, Jing Liu, Hongyan Zhao, Bo Li, Zongshan Liang, Boyi Song, Zhaopeng Shi, Liang Wu, Lu Wang, Qiuming Zhu, Yanpeng Li, Shuang State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China College of Urban and Environmental Science MOE Laboratory for Earth Surface Processes Peking University Beijing100871 China Lhasa Plateau Ecosystem Research Station Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing100101 China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Science Chinese Academy of Sciences Beijing China College of Forestry Beijing Key Laboratory of Precise Forestry Institute of GIS RS & GPS Beijing Forestry University Beijing100083 China China Meteorological Administration Training Center Beijing100081 China

Forest growth in most parts of northern China is currently limited by drought and low nitrogen availability. The extreme drought events have increasingly threatened multiple ecosystem services provided by forests. Whether nitrogen addition will have a detrimental/beneficial moderation effect on forest resistance and recovery to extreme droughts was remained unclear. Here, Pinus tabulaeformis is the research object in this study, which is the main artificial forest species in northern China. We investigate the role of climate and nitrogen addition in driving multi-year tree growth with a combination of an 8 year nitrogen addition experiment and 184 tree ring series. An extreme drought event occurred during the experiment, providing an opportunity for us to explore the effects of drought and nitrogen addition on tree resistance and recovery. We found that nitrogen addition is beneficial for increasing the resistance of young trees, but has no effect on old trees. The recovery of trees weakens significantly with increasing nitrogen addition, and the reduction in fine root biomass caused by multiyear nitrogen addition is a key influencing factor of limited recovery after extreme drought. Our study implies that the combined effect of increasing drought and nitrogen deposition might increase the risk of pine forest mortality in northern China. © 2023, The Authors. All rights reserved.

关键词： Recovery

Genome assembly of autotetraploid Actinidia arguta highlights adaptive evolution and enables dissection of important economic traits

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Plant Communications 2024年第6期5卷 173-192页

作者： Xue-Mei Lu Xiao-Fen Yu Guo-Qiang Li Ming-Hao Qu Huan Wang Chuang Liu Yu-Ping Man Xiao-Han Jiang Mu-Zi Li Jian Wang Qi-Qi Chen Rui Lei Cheng-Cheng Zhao Yun-Qiu Zhou Zheng-Wang Jiang Zuo-Zhou Li Shang Zheng Chang Dong Bai-Lin Wang Yan-Xiang Sun Hui-Qin Zhang Jie-Wei Li Quan-Hui Mo Ying Zhang Xin Lou Hai-Xu Peng Ya-Ting Yi He-Xin Wang Xiu-Jun Zhang Yi-Bo Wang Dan Wang Li Li Qiong Zhang Wen-Xia Wang Yongbo Liu Lei Gao Jin-Hu Wu Yan-Chang Wang CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenChinese Academy of SciencesWuhanHubeiChina Key Laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhouGansuChina College of Life Sciences University of Chinese Academy of SciencesBeijingChina Wuhan Frasergen Bioinformatics Co. LtdWuhanHubeiChina Institute of Soil and Fertilizer Anhui Academy of Agricultural SciencesHefeiChina College of Agricultural Sciences Xichang UniversityXichangSichuanChina Department of Horticulture Heilongjiang Academy of Agricultural SciencesHarbinHeilongjiangChina College of Life Sciences Langfang Normal UniversityLangfangHebeiChina Institute of Horticulture Zhejiang Academy of Agricultural SciencesHangzhouZhejiangChina Guangxi Institute of Botany Chinese Academy of SciencesGuilinGuangxiChina Xi’an Botanical Garden of Shaanxi Province Institute of Botany of Shaanxi ProvinceXi’anShaanxiChina Institute of Modern Agricultural Research Dalian UniversityDalianLiaoningChina Bioinformatics Center College of Plant Science and TechnologyBeijing University of AgricultureBeijingChina College of Agriculture Eastern Liaoning UniversityDandongLiaoningChina Dalian Institute of Chemical Physics Chinese Academy of SciencesDalianLiaoningChina State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment Chinese Research Academy of Environmental SciencesBeijingChina Hubei Hongshan Laboratory WuhanHubeiChina The New Zealand Institute for Plant and Food Research Limited AucklandNew Zealand

Actinidia arguta,the most widely distributed Actinidia species and the second cultivated species in the genus,can be distinguished from the currently cultivated Actinidia chinensis on the basis of its small and smooth fruit,rapid softening,and excellent cold *** evolution of tetraploid Actinidia species and the genetic basis of their important agronomic traits are still ***,we generated a chromosome-scale genome assembly of an autotetraploid male *** *** genome assembly was 2.77 Gb in length with a contig N50 of 9.97 Mb and was anchored onto 116 *** and clustering of 101 geographically representative accessions showed that they could be divided into two geographic groups,Southern and Northern,which first diverged 12.9 million years *** underwent two prominent expansions and one demographic bottleneck from the midPleistocene climate transition to the late *** genomics studies using paleoclimate data enabled us to discern the evolution of the species’adaptation to different historical *** genes(AaCEL1,AaPME1,and AaDOF1)related to flesh softening were identified by multi-omics analysis,and their ability to accelerate flesh softening was verified through transient expression assays.A set of genes that characteristically regulate sexual dimorphism located on the sex chromosome(Chr3)or autosomal chromosomes showed biased expression during stamen or carpel *** chromosome-level assembly of the autotetraploid *** genome and the genes related to important agronomic traits will facilitate future functional genomics research and improvement of ***.

关键词： kiwiberry dioecism adaptive evolution paleoclimate GEA rapid softening

Biodiversity conservation in China: A review of recent studies and practices

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环境科学与技术 2020年第4期2卷 7-16页

作者： Wei Wang Chunting Feng Fangzheng Liu Junsheng Li State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Regional Eco-process and Funcntion Assessment Chinese Research Academy of Environmental Sciences Beijing 100012 China Biodiversity Research Center Chinese Research Academy of Environmental Sciences Beijing 100012 China

Biodiversity conservation plays an important role in the sustainable development of human *** had made significant progress in biodiversity conservation studies and *** paper reviews major achievements in China in the past decades,especially those since *** terms of the science behind biodiversity conservation,Chinese scholars have made significant contributions to priority research subjects,including mechanisms for maintaining biological communities and the relationship between biodiversity and ecosystem ***,biodiversity conservation and management systems specific to China have been basically *** Chinese Government and researchers have undertaken a number of investigations,scientific studies,and monitoring,and have established relevant *** efforts taken to protect and restore biodiversity and ecosystems,the concept of biodiversity has gradually become popular in *** review is an attempt to share with the world the learning from China's progress towards becoming an ecological civilization and highlights that the efforts towards biodiversity conservation need to be organically integrated with sustainable development goals.

关键词： ecological civilization Mainstreaming Mobile supervising system Sustainable development Protected areas