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Photosynthetic capability and Fe, Mn, Cu, and Zn contents in two Moraceae species under different phosphorus levels

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Acta Geochimica 2016年第3期35卷 309-315页

作者： Deke Xing Yanyou Wu Rui Yu Yansheng Wu Chuan Zhang Zheng Liang Key Laboratory of Modern Agricultural Equipment and Technology Ministry of Education Institute of Agricultural Engineering Jiangsu University Research Center for Environmental Bio-Science and Technology State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences

The strong adaptability of Broussonetia papyrifera （L.） Vent. to low phosphorus （P） conditions can be attributed to the large amount of root-exuded organic acids and the high efficiency of P extraction. However, microelement contents are influenced by low-P stress, and their effects on the photosynthetic capability of B. pa- pyrifera remain unknown. In this study, we investigated the effects of low-P treatment on net photosynthetic rate （PN）; chlorophyll a fluorescence （ChlF） characteristics; and Fe, Mn, Cu, and Zn contents of B. papyrifera and Morus alba L. seedlings. Results show that B. papyrifera exhibited better photosynthetic capability under moderate P defi- ciency （0.125, 0.063, and 0.031 mmol/L P treatments）, whereas the photosynthetic capability of M. alba decreased under moderate and severe P deficiency （0.016 and 0 mmol/L P treatments）. Under moderate P deficiency, the decrease in Cu and Zn contents in B. papyrifera was lower than that in M. alba. Under severe P deficiency, a consid- erable decrease of photosynthetic capability in B. pa- pyrifera and M. alba was associated with low Cu and Zn contents. The PN of the two Moraceae species exhibited a better correlation with Cu and Zn contents than with Fe or Mn content. P deficiency could not only decrease cyclic photophorylation and photosynthetic efficiency, but could also affect the stability of thylakoid membrane structureand electron transport efficiency by influencing the con- tents of Cu or Zn, thereby affecting photosynthesis.

关键词： adaptability Chlorophyll a fluorescence Microelement Organic acids Sensitive

Abundance,Diversity and Functional Potentials of Planktonic Bacteria and Microeukaryotes in the Coral-Reef System of Xisha Islands,China

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Journal of Ocean University of China 2022年第3期21卷 748-762页

作者： ZHANG Xiaoli WANG Lei PENG Saijun WUZHONG Qiyue ZHANG Lei DONG Zhijun SUN Tingting LIU Ping ZHANG Qianqian ZHAO Jianmin Yantai Institute of Coastal Zone Research Chinese Academy of SciencesYantai264003China University of Chinese Academy of Sciences Beijing100049China State Key Laboratory of Marine Resource Utilization in South China Sea College of Marine ScienceHainan UniversityHaikou570228China College of Life Science Yantai UniversityYantai264005China

Corals influence microorganisms within the surrounding seawater,yet the diversities and functions of seawater bacteria and microeukaryotes in coral-reef systems have not been well *** collected 40 seawater samples in outer coral reef flats and semi-closed inner lagoons from the surface,middle and bottom layers in the pristine coral-reef system of Xisha Islands,South China *** detected the abundance,composition and distribution of bacteria and microeukaryotes using flow cytometry,qPCR and high throughput sequencing techniques,and profiled the potential ecological roles based on the information of 16S and 18S rDNA *** terms of flow cytometry,Prochlorococcus dominated the autotrophs with cell abundance ranging from 5.8×10^(2)to 5.44×10^(3)cells mL−1 *** on qPCR,the 16S rDNA copies were much higher in coral reef flats than in lagoons(P=0.003).The bacterial communities held significantly lower diversity in bottom waters compared with surface and middle waters(Padaptability of seawater microbes to the unique coral-reef environments.

关键词： community composition function adaptability planktonic bacteria and microeukaryotes coral reef systems

Vulnerability of glacier change in the Tianshan Mountains region of China

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Journal of Geographical Sciences 2021年第10期31卷 1469-1489页

作者： CAI Xingran LI Zhongqin ZHANG Hui XU Chunhai State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesCASLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China National Cryosphere Desert Data Center Northwest Institute of Eco-Environment and ResourcesCASLanzhou 730000China

The glacier is a crucial freshwater resource in arid and semiarid regions,and the vulnerability of the glacier change is intimately linked to regional ecological services and socio-economic *** the Tianshan Mountains region in China as an example,a basic framework for studying the vulnerability of glacier change was constructed so as to address factors such as physical geography,population status,socio-economic level,agricultural development,and social *** framework was based on key dimensions,that is,exposure,sensitivity,and adaptability,and this constituted a targeted evaluation index *** examined the spatial structure and spatial autocorrelation of the glacier change vulnerability using ArcGIS and GeoDa *** influence and interaction of natural,social,economic,population and other factors on glacier change adaptability was examined using the GeoDetector *** results suggested the following:(1)The vulnerability level decreased from the western region to the eastern region with significant differences between the two *** eastern region had the lowest vulnerability,followed by the central region,and then western region which had the highest vulnerability.(2)Significant positive and negative correlations were found between exposure,sensitivity,and adaptability,indicating that the areas with high exposure and high sensitivity to glacier change tended to have a low adaptive capacity,which led to high vulnerability,and vice versa.(3)The spatial heterogeneity regarding the ability to cope with glacier change reflected the combined effects of the natural,social,economic,and demographic *** them,factors such as the production value of secondary and tertiary industries,the urban population,urban fixed-asset investment,and the number of employees played major roles regarding the spatial heterogeneity of glacier change.

关键词： glacier change vulnerability adaptability GeoDetector model Tianshan Mountains China

Stability analysis of different cotton genotypes under normal and water-deficit conditions

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Journal of Integrative Agriculture 2019年第6期18卷 1257-1265页

作者： Muhammad Riaz Jehanzeb Farooq Saghir Ahmed Muhammad Amin Waqas Shafqat Chattha Maria Ayoub Riaz Ahmed Kainth Cotton Research Station Faisalabad 38850Pakistan Cotton Research Institute Multan 66000Pakistan Nuclear Institute for Food and Agriculture (NIFA) Tarnab Peshawar 446Pakistan

Cotton plant observes significant reduction in seed cotton yield when subjected to water *** find out genotypes having better drought tolerance,seven genotypes of Gossypium hirsutum *** tested under two moisture levels,i.e.,normal and water deficit stress conditions at five locations of Punjab,Pakistan(Faisalabad,Sahiwal,Vehari,Rahim Yar Khan,and Bahawalpur)in 2013 and ***×environment interaction(GEI)was studied using the genotype main effects and genotype by environment interaction(GGE)biplot and additive main effect and multiplicative interaction *** genotypes G3(7001/11)and G6(FH-942)were stable under normal condition,while under drought condition,the stable genotype was G5(FH-326)when analysed using additive main effects and multiplicative interaction(AMMI)biplot *** GGE biplot analysis on the basis of best performance revealed that under normal condition the genotypes,G1(L-13/10)and G2(FH-2056/10),carrying the common position in ***,under water deficit stress condition,G5 was the best adaptive genotype at all five *** the same way,ranking of genotypes showed that the G5 was the ideal genotype under both ***,it is concluded that the genotype G5(FH-326)was found best for water deficit stress condition and can be cultivated under water scarce areas of Punjab.

关键词： upland cotton yield stability adaptability water stress Pakistan irrigation

Adaptive evolution of the rural human-environment system in farming and pastoral areas of northern China from 1952-2017

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Journal of Geographical Sciences 2021年第6期31卷 859-877页

作者： LI Wenlong KUANG Wenhui LYU Jun ZHAO Zhonghua ZHANG Boyuan Key Laboratory of Land Surface Pattern and Simulation Beijing 100101China School of Resources and Environmental Economics Inner Mongolia University of Finance and EconomicsInner Mongolia Key Laboratory of Economic Data Analysis and MiningHohhot 010070China Tourism School Shanghai Normal UniversityShanghai 200234China

The theory on the cyclic adaptation between society and ecosystems sheds new light on the evolution and internal structure of human–environment *** paper introduces the risk index(RI)and adaptation capacity index(ACI)to evaluate the rural human–environment *** evaluation index system for the adaptability of rural human–environment systems is configured in the context of climate change and policy *** this basis,the stages,features,dominant control factors,and evolution mechanism were examined vis-à-vis the adaptability of the rural human–environment system in Darhan Muminggan Joint Banner from 1952 to *** main results are as follows:(1)The evolution of the rural human–environment system can be divided into three stages,namely,the reorganization and rapid development stage(1952–2002)with population,cultivated land,livestock and degraded grassland increasing by 260%,13%,134%and 16.33%,*** rapid to stable development stage(2003–2010)with population increasing by 2.8%;cultivated land,livestock and degraded grassland decreasing by 2.3%,13.6%and 10.7%,*** stable to release stage(2011–2017)with population,cultivated land,livestock and degraded grassland decreasing by 2.6%,0.2%,10.6%and 3.8%,respectively.(2)With the passage of time,the ACI of the rural human–environment system first increased slightly(–0.016–0.031),followed by a slight decline(0.031–0.003),and culminating in a rapid increase(0.003–0.088).In terms of spatial patterns,adaptability is high in the middle,moderate in the north,and low in the south.(3)The evolution of adaptability in the rural human–environment system was mainly controlled by the per capita effective irrigation area(22.31%)and the per capita number of livestock(23.47%)from 1990 to 2000,the desertified area(25.06%)and the land use intensity(21.27%)from 2000 to 2005,and the per capita income of farmers and herdsmen(20.08%)and the per capita number of livestock(18.52%)from 2010 to 2007.(4)Un

关键词： rural human–environment system adaptability evolution mechanism farming and pastoral areas

Metagenomics reveals contrasting energy utilization efficiencies of captive and wild camels(Camelus ferus)

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Integrative Zoology 2022年第3期17卷 333-345页

作者： Liping YAN Liping TANG Zhichao ZHOU Wei LU Bo WANG Zhicheng SUN Xue JIANG Defu HU Junqing LI Dong ZHANG School of Ecology and Nature Conservation Beijing Forestry UniversityBeijingChina Gansu Endangered Animals Protection Center WuweiChina Administrative Bureau of Dunhuang Xihu National Nature Reserve DunhuangChina

Captive conditions can affect the symbiotic microbiome of *** this study,we compared the structural and functional differences of the gastrointestinal microbiomes of wild Bactrian camels(Camelus ferus)between wild and captive populations,as well as their different host energy utilization performances through *** results showed that wild-living camels harbored more microbial taxa related to the production of volatile fatty acids,fewer methanogens,and fewer genes encoding enzymes involved in methanogenesis,leading to higher energy utilization efficiency compared to that of captive-living *** findings suggest that the wild-living camel fecal microbiome demonstrates a series of adaptive characteristics that enable the host to adjust to a relatively barren field *** study provides novel insights into the mechanisms of wildlife adaptations to habitats from the perspective of the microbiome.

关键词： adaptability energy utilization gastrointestinal microbiome metagenomics wild and captive wild Bactrian camel

Fitness of fall armyworm,Spodoptera frugiperda to three solanaceous vegetables

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Journal of Integrative Agriculture 2021年第3期20卷 755-763页

作者： WU Li-hong ZHOU Cao LONG Gui-yun YANG Xi-bin WEI Zhi-yan LIAO Ying-jiang YANG Hong HU Chao-xing Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region Institute of EntomologyGuizhou UniversityGuiyang 550025P.R.China College of Tobacco Science Guizhou UniversityGuiyang 550025P.R.China Scientific Observing and Experimental Station of Crop Pests in Guiyang of Ministry of Agriculture and Rural Affairs Guiyang 550025.P.R.China

The fall armyworm(FAW),Spodoptera frugiperda Smith(Lepidoptera:Noctuidae)is an important agricultural pest that invaded China in the middle of December *** a polyphagous pest,FAW is identified as a serious threat to agricultural production and food security in ***(Capsicum annuum L.),tomato(Solanum lycopersicum Mill.)and eggplant(Solanum melongena L.)are three of dominant solanaceous vegetables of this *** our knowledge,the effects of these plants on the performances of FAW have not been well *** this study we assessed the fitness of this pest to these three *** showed that FAW can complete its life cycle when fed with tomato and pepper,but not on *** population parameters of FAW fed with maize(Zea mays L.)and the three solanaceous vegetables were compared using the age-stage,two-sex life table *** duration was significantly different in the larval stage,but not in the pupae *** fed with pepper had the longest pre-adult period(41.73 d)and the lightest pupal weight(0.1134 g);the survival rate was lower than FAW fed with *** differences were observed in the mean fecundity of female,with the highest(943.95 eggs)laid by FAW fed with *** had the shortest mean generation time(T),the highest intrinsic rate of increase(r)and finite rate of increase(λ)on maize,and the highest net reproductive rate(R_(0))on ***,FAW fitness on the three solanaceous vegetables was:tomato>pepper>*** study provides the foundation for further assessment of FAW risk to solanaceous vegetables and for establishing corresponding control strategies in China.

关键词： Spodoptera frugiperda life table adaptability tomato pepper eggplant

Edaphic factors determining variation of two ecotypes of Leymus chinensis in North China

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Progress in Natural Science:Materials International 2006年第11期16卷 1150-1155页

作者： ZHOU Chan~1 and YANG Yunfei~2**(1. MOE Key Laboratory of Environmental Change and Natural Disasters, College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China 2. Key Laboratory of Vegetation Ecology, Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changchun 130024, China) MOE Key Laboratory of Environmental Change and Natural Disasters College of Resources Science and Technology Beijing Normal University Beijing 100875 China Key Laboratory of Vegetation Ecology Ministry of Education Institute of Grassland Science Northeast Normal University Changchun 130024 China

To identify ecotypic variation of L. chinensis, the physiological characteristics and environmental factors were measured and assessed for grey-green and yellow-green ecotypes of L. chinensis grown in the salt-alkalized and aeolian sandy soils. Although both ecotypes presented a similar salt-alkaline tolerance under the experimental conditions, they differed in several aspects. The L. chinensis grown in the aeolian sandy soils had higher water potential and chlorophyll content and lower proline content in their leaves than those grown in the salt-alkalized habitat, and the grey-green ecotype of L. chinensis in both types of soils had higher water potential, chlorophyll and proline contents than the yellow-green ecotype. Besides, grey-green ecotypes had higher salt-alkaline tolerance than the yellow-green ecotype. The stepwise regression analysis showed that soil conductance and pH value were the main ecological factors affecting the physiology of L. chinensis. From the natural distribution of the two ecotypes, we considered that salt-alkaline in the soils is the leading factor in determining ecotypic variation of L. chinensis. The two ecotypes were first named grey-green and yellow-green ecotypes respectively.

关键词： L.chinensis ecotype adaptability variation ecological factor salt-alkaline in soil.

Assessing ecological vulnerability in western China based on Time-Integrated NDVI data

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Journal of Arid Land 2016年第4期8卷 533-545页

作者： JIN Jia WANG Quan Joint Research Center of Drylands Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China University of Chinese Academy of Sciences Beijing 100049China Faculty of Agriculture Shizuoka UniversityShizuoka 422-8529Japan

Arid and semi-arid areas are the most vulnerable regions to climate change. Clear understanding of the effects of climate change on ecosystems in arid and semi-arid regions and the ecosystem vulnerability is important for ecosystem management under the background of climate change. In this study, we conducted a vulnerability assessment on various ecosystems from 1982 to 2013 in western China with large areas of arid and semi-arid lands based on the Time-Integrated Normalized Difference Vegetation Index （TINDVI） data and climate data. The results indicated that grasslands were the most vulnerable ecosystem to climate change in western China, especially for those in Tibetan Plateau. Croplands in oases were not vulnerable to climate change compared to rain-fed croplands in semi-arid regions （e.g. Gansu and Inner Mongolia）, which was attributed to the well-developed drip irrigation technology in oases. Desert and Gobi ecosystems were slightly vulnerable to climate change during the past several decades. The assessment results, as revealed in this study, can provide a reference for taking appropriate actions to protect the ecosystems in western China.

关键词： vulnerability sensitivity adaptability climate change Time-Integrated Normalized Difference VegetationIndex (TINDVI) western China