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Reclamation-oriented spatiotemporal evolution of coastal wetland along Bohai Rim,china

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Acta Oceanologica Sinica 2022年第9期41卷 192-204页

作者： Fan Wei mei han Guangxuan han Min Wang Lixin Tian Jiqian Zhu Xianglun Kong College of geography and Environment Shandong Normal UniversityJinan250358China Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai264003China

Coastal wetlands are located in the ecotone of interaction between the land surface and sea,and anthropogenic activities extensively interfere with these wetlands through the reclamation of large tidal wetlands and destruction of the function of the *** this study,we investigated the dynamic evolutionary characteristics of the Bohai Rim coastal area over the past 40 years using the Modified normalized Difference Water Index,the fractal dimension,object-oriented classification,the land-use transfer trajectory,and regression ***,we quantified and monitored the evolution of reclamation and analyzed the correlation between reclamation and coastal wetlands based on 99 Landsat-2.-5,and-8 images(at 60 m and 30 m spatial resolution) over the period 1980–*** results are as follows.(1) The coastline of the Bohai Rim increased by 1 631.2.km from 1980 to2.19 with a zigzag *** artificial coastline increased by 2.946.1 km,whereas the natural coastline decreased by 90%.(2. The area of man-made wetlands increased by 3 736.9 km~2.the area of construction land increased by 1 008.4 km~2.and the natural wetland area decreased by 66%.The decrease of tidal flats is the main contributor to the decrease of natural wetland area(takes account for 91.1%).Coastal areas are affected by intense human disturbance,which was taken place across a large area of tidal flats and caused the landscape to fragment and be more *** coastal zone development activities were primarily concentrated in the southern Laizhou Bay,the Yellow River Delta,the Bohai Bay,the northern Liaodong Bay,and the Pulandian *** solidified shorelines and increase in sea level have resulted in intertidal wetlands decreasing and impaired wetland ecology.(3) There is a good agreement between reclamation and the size of the coastal *** land reclamation and the reduction in coastal wetland areas are significantly related to the population size,fishery output value,a

关键词： Bohai Rim coastal wetlands land reclamation evolutionary mechanisms coastal management

Eco-compensation of Wetlands in Yellow River Delta of shandong Province,china

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Chinese Geographical Science 2012年第1期22卷 119-126页

作者： han mei CUI Jinlong HAO Zhen WANG Yi WANG Renqing College of Life Science Shandong University Jinan 250100 China College of Population Resource and Environment Shandong Normal University Jinan 250014 China School of Economies Nankai University Tianjin 300071 China

Wetlands play an important ecological role and provide many functions for people, yet wetlands are cur- rently decreasing and deteriorating. The ability to calculate an economic value for the loss of wetlands is becoming in- creasingly important for policy makers. In this study, remote sensing, field investigations, department visits, and other methods were used to survey wetland types, assess wetland area changes, and calculate wetland economic value. Mar- ket value loss and ecological ftmction value loss, caused by reduction of wetland area and environmental pollution were calculated using commonly accepted methods of market valuation, ecological valuation, environmental protection investment cost analysis, and outcome parameters. According to market value loss and ecological function value loss, preliminarily fund allocation for wetland and ecological compensation was calculated. This will provide an important reference for future Yellow River Delta eco-compensation studies.

关键词： Yellow River Delta wetland eco-compensation compensation standard

Mechanism of apoptotic effects induced selectively by ursodeoxycholic acid on human hepatoma cell lines

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World Journal of Gastroenterology 2007年第11期13卷 1652-1658页

作者： Hui Liu Cheng-Yong Qin Guo-Qing han Hong-Wei Xu mei Meng Zhen Yang department of Gastroenterology Shandong Provincial Hospital Shandong University Jinan 250021 Shandong Province China

AIM: To investigate the effects of ursodeoxycholic acid (UDCA) on apoptosis and proliferation of hepatoma cell lines. METHODS: Human hepatoma cell lines HepG2.and BEL 7402.were cultured in medium supplemented with different concentrations of UDCA, normal human hepatic line L-02.was used as control. Cell proliferation, apoptosis and gene expression were detected using methyl thiazolyl tetrazolium (MTT) assay, flow cytometry, Western blot, DNA ladder assay, electron microscopy, and immunocytochemistry. RESULTS: Ursodeoxycholic acid inhibited the proli- feration of HepG2.and BEL7402.cell lines in a dose- dependent manner. Ursodeoxycholic acid can change cell cycle distribution of HepG2.and BEL7402. the proportion of cells in G0-G1 phase increased whereas the proportion of S phase cells and G2.M phase cells decreased. Ursodeoxycholic acid arrested the cell cycle in G0-G1 phase by down-regulating the cell cycle related proteins cyclin D1, D3 and retinoblastoma protein (pRb). The apoptotic rates of HepG2.and BEL7402.treated with UDCA (1.0 mmol/L) were significantly higher than those of control. In the HepG2.and BEL7402.treated with UDCA, expression of bcl-2.decreased whereas expression of Bax increased, the nuclear fragmentation and chromosomal condensed, cells shrank and lost attachment, apoptotic bodies and DNA ladders appeared. UDCA had no effect in inducing apoptosis on L-02.cell lines. CONCLUSION: UDCA can selectively inhibit proliferation and induce apoptosis of HepG2.and BEL7402.cell lines by blocking cell cycle and regulating the expression of Bax/bcl-2.genes.

关键词： Liver neoplasm Ursodeoxycholic acid Apoptosis Mechanism Cell lines

A STUDY OF THE SURFACE EMERGING PALAEOChanNELS ON THE SOUTH COAST PLAIN OF LAIZHOU BAY

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Chinese Geographical Science 2000年第3期10卷 54-62页

作者： mei han Dao-gao Li Ming-hua Zhao Ai-xia Jiang department of geography Shandong Normal University Jinan P. R. China

By employing many methods including distinguishing the land maps, interpreting the aerophotoes and Satellite photographes, consulting historical documents, investigating ancient cultural relics, making investigations in the field, analysing the names and features of the place, and analysing the characteristics of the deposit, etc., a systematic study of the surface emerging palaeochannels on the South Coast Plain of Laizhou Bay has been made. Twenty five surface emerging palaeochannels were discovered and verified. According to the formation age, these palaeochannels were divided into two stages: six palaeochannels were formed in the Early and Middle Holocene, and nineteen palaeochannels were formed in the Late Holocene(the historical period). According to the landform features, the palaeochannels are divided into four categories: upland palaeochannel belts, strip shaped upland palaeochannels, trough shaped depression palaeochannels and ancient riverbeds. Among the four categories, the strip shaped upland palaeochannels are the main types. The swinging and movement of the channels helped the alluvial plains expand and cause the coastal ancient lakes to vanish in succession.

关键词： the South Coast Plain of Laizhou Bay surface emerging palaeochannels Holocene

THEORIES AND METHODS OF STRATEGIC ENVIRONMENTAL ASSESSMENT OF MODERN LOGISTICS DEVELOPMENT——A Case Study of Dalian City, china

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Chinese Geographical Science 2005年第2期15卷 145-150页

作者： XULing ShanGJin-cheng WANGYu-mei Northeast Institute of geography and Agricultural Ecology Chinese Academy of ScieneesChangchun 130012P.R.China Graduate School of Chinese Academy of Sciences Beijing 100039P.R.China department of Environmental Sciences and Engineering Northeast Normal UniversityChangchun 130024P.R.China

Modern logistics is a new industry during the construction of national economy. Based on analyzing the environmental problem that was led by the limitation of the strategy during enacting the program of the modern logistics, SEA for modern logistics was implemented. In this paper, procedure and indicator system in the SEA are constructed, and Environmental Check List to identify environmental impact factors of SEA for modern logistics is established. And a conception that indicates friendly degree of logistics system with resources and environment, degree of green, is introduced. With the example of modern logistics program of Dalian in china, two methods are applied, AHP and Fuzzy Comprehensive Evaluation Method, in the implement of SEA for modern logistics development. It is concluded that degree of green of modern logistics in Dalian is high. However, several important factors should be paid much attention to in the SEA for modern logistics as well as in the formulation and implement of modern logistics in Dalian.

关键词： modern logistics strategic environmental assessment (SEA) degree of green Dalian

Electronic States in Quasi-one-Dimensional Copolymeric Sandwich Structures

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Chinese Physics Letters 2001年第12期18卷 1644-1647页

作者： LIU De-Sheng WANG Lu-Xia WEI Jian-Hua ZHENG Bin XIE Shi-Jie han Sheng-Hao mei Liang-Mo School of Physics and Microelectronics Shandong UniversityJi'nan 250100 department of Physics Jining Normal UniversityJining 272025 National Key Laboratory of Crystal Materials Shandong UniversityJi'nan 250100

The electronic properties of xPA/nPPP/yPA sandwiched copolymers with a well-barrier-well structure have been studied by using a tight-binding calculation. It was found that the electronic properties of the neutral states of these sandwiched copolymers are sensitive to the constitutions of PPP and PA monomers and the interface coupling between PA and PPP. It is verified that the quantum tunnelling effect will occur at the lowest conductive state of xPA/nPPP/xPA copolymers.

关键词： calculation sandwich Copolymer

The role of NF-κB activation in lipopolysacchavide induced keratitis in rats

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Chinese Medical Journal 2005年第22期118卷 1893-1899页

作者： WU Xin-yi han Shao-ping REN mei-yu ChanG Yuan YU Fu-xin department of Ophthalmology Qilu Hospital Shandong UniversityJi＇nan 250012 China

Background Nuclear factor-kappa B （NF-kB） is elevated in regulating transcription of many cytokines and inflammatory mediators. The purpose of this study was to investigate the activation and the significance NF-KB in lipopolysaccharide （LPS） induced keratitis.Methods LPS induced keratitis model was based on Wistar rats. At 0. 5, 1, 3, 6, 12. 2. or 72.hours after LPS treatment, the rat corneas were observed with a slit lamp microscope, then the rats were sacrificed and their corneas were excised for routine histological analysis. The expression of NF-kB was detected with immunohistochemical staining. The change identified by reverse transcriptase polymerase of tumour necrosis factors-α （TNF-α） mRNA expression was chain reaction （RT-PCR）. Results Histological findings demonstrated that LPS treated corneas showed significant changes in corneal structure. Corneal edema, pronounced inflammatory cells infiltration and inordinate collagen fibres were observed. Immunohistochemical results showed that the expression of NF-kB and its activation obviously increased after LPS treatment compared with the {2. group and control group. Positive cells could be observed at 0. 5 hour and peak expression of NF-kB was observed between 3 hours and 12.hours after infection, but returned to or approached {2. level by 72.hours. RT-PCR showed that the level of TNF-α mRNA began to increase 0. 5 hour after LPS treatment, peaked at 6 hours and then subsided by 72.hours. NF-kB had a positive correlation with the expression of TNF-α mRNA （r=0. 964, P 〈 0. 01 ） , both NF-kB and TNF-α had a strong positive correlation with the degree of inflammatory response in LPS treated corneas （ r=0. 92., P 〈 0. 01 ; r=0. 587, P 〈 0.05, respectively）. Conclusions The activation of NF-kB was increased keratitis by promoting overexpression of TNF-α mRNA. LPS-associated keratitis in rats. in LPS treated corneas and was elevated in LPS induced NF-kB may play an important role in the pathogenesis ofLPS-as

关键词： keratitis·lipopolysaccharides tumour necrosis factors NF-kappa B

山东省干旱时空分布特征及其与ENSO的相关性

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中国生态农业学报 2018年第8期26卷 1236-1248页

作者：徐泽华韩美山东师范大学地理与环境学院济南250358

基于山东省15个气象台站1964—2.10年的逐月降水和平均气温资料,采用标准化降水蒸散指数(SPEI)定量分析了山东省不同时间尺度干旱发生频率,利用Mann-Kendall非参数检验法和Arcgis软件,对近50年山东省干旱的时空变化趋势进行分析。为了... 详细信息

基于山东省15个气象台站1964—2.10年的逐月降水和平均气温资料,采用标准化降水蒸散指数(SPEI)定量分析了山东省不同时间尺度干旱发生频率,利用Mann-Kendall非参数检验法和Arcgis软件,对近50年山东省干旱的时空变化趋势进行分析。为了研究厄尔尼诺/南方涛动(ENSO)对山东省干旱的影响,运用连续小波(CWT)、交叉小波变换(XWT)和小波相干谱(WTC)分析SPEI与ENSO指数(多变量ENSO指数,mei)的相关关系和周期特征。结果表明:多时间尺度的SPEI值可以较好地反映山东省的干旱情况;不同时间尺度的SPEI值随时间变化的敏感性存在明显差异,时间尺度越小,变化幅度越大。近50年山东地区呈现明显的增暖趋势,其中东部增温最为显著,降水减少和温度升高使山东气候趋于"暖干化",加剧山东省干旱程度。空间变化趋势上,山东省年SPEI和山东省年降水的空间分布具有一致性,总体有西部变湿润、东部变干的趋势。在干旱发生时间尺度上,月尺度干旱发生频率高于年尺度干旱发生频率,四季中春、秋季干旱最为严重。春旱和秋旱以鲁西和鲁西北平原发生频率最高,各地区之间差异明显。ENSO暖事件时,山东易旱;ENSO冷事件时,干旱减少。SPEI存在1~2.5 a尺度的年际振荡周期特征,呈现了与mei指数相似的变化特征。高能量区,SPEI和mei存在5~6 a的共振周期,SPEI较mei提前1~2.月;低能量区,SPEI与mei存在3~3.8 a呈负相位的共振周期。

关键词：山东省 SPEI 干旱 ENSO事件多变量ENSO指数小波分析

A new distinct geminivirus causes soybean stay-green disease

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Molecular Plant 2022年第6期15卷 927-930页

作者： Ruixiang Cheng Ruoxin mei Rong Yan Hongyu Chen Dan Miao Lina Cai Jiayi Fan Gairu Li Ran Xu Weiguo Lu Yu Gao Wenwu Ye Shuo Su Tianfu han Junyi Gai Yuanchao Wang Xiaorong Tao Yi Xu department of Plant Pathology Nanjing Agricultural UniversityNanjing 210095China The Key Laboratory of Bio-interaction and Crop Health Nanjing Agricultural UniversityNanjing 210095China Key Laboratory of Soybean Disease and Pest Control(Ministry of Agriculture and Rural Affairs) Nanjing Agricultural UniversityNanjing 210095China Engineering Laboratory of Animal Immunity of Jiangsu Province College of Veterinary MedicineAcademy for Advanced Interdisciplinary StudiesNanjing Agricultural UniversityNanjing 210095China Crop Research Institute Shandong Academy of Agricultural SciencesJinanShandong 250100China Henan Academy of Crop Molecular Breeding ZhengzhouHenan 450002China College of Plant Protection Jilin Agricultural UniversityChangchunJilin 130018China MOA Key Laboratory of Soybean Biology(Beijing) Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Soybean Research Institute Nanjing Agricultural UniversityNanjing 210095China

Dear Editor,Plant viruses make up almost half of the plant disease-causing pathogens,affecting crop yields and the global economy(Savary et al.,2.19).Soybean(Glycine max)is one of the most valuable legume crops in the world,supplying 2.%of the global edible oil and two-thirds of the global concentrated protein for livestock ***,the outbreak of soybean stay-green syndrome with delayed leaf senescence(stay-green),flat pods,and increased number of abnormal seeds has swept the soybean production in the Huang-Huai-Hai region of china,resulting in huge yield losses(Xu et al.,2.19).This disease has become an epidemic and prominent problem in soybean production and is still expanding its {2.,including North America,posing a serious threat to soybean production(Harbach et al.,2.16;Zhang et al.,2.16;Li et al.,2.19).However,the cause of soybean stay-green syndrome remains obscure.

关键词： soybean crops expanding