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Pollen assemblages from different agricultural units and their spatial distribution in Anyang area

Chinese Science Bulletin 2010年第6期55卷 544-554页

作者： WANG XueLi1,2,LI YueCong1,2,XU QingHai1,2,CAO XianYong1,2,ZHANG LiYan1,2 & TIAN Fang1,2 1 College of Resource and environmental Sciences,hebei Normal University,shijiazhuang 050016,china 2 hebei key laboratory of environmental change and ecological construction,shijiazhuang 050016,china College of Resource and environmental Sciences Hebei Normal University Shijiazhuang China hebei key laboratory of environmental change and ecological construction Shijiazhuang China

Pollen analysis is one of the best and possible approaches for the quantitative reconstruction of paleobotany and paleoclimate,and discrimination of human *** this paper,we reveal the characteristics of pollen assemblages in different agricultural units and their spatial distribution of major pollen taxa in the Anyang area where the human influences are serious,so as to get more information about climate change and human activities from pollen *** pollen assemblages of total 122 surface soil samples from different agricultural units (farm lands,vegetable plots,wastelands,cape-lands,woodlands,etc.) indicate that herbaceous pollen dominates the pollen assemblages with an average of 73%,mainly from Poaceae,Artemisia,Chenopodiaceae and Cruciferae;arboreal pollen percentages reach 18%,mainly from Pinus and Ulmus;shrub pollen and fern spores have very low *** general,pollen assemblages are consistent with vegetation composition,though some differences also exist in different agricultural *** farmlands and vegetable lands,Poaceae pollen has the highest percentages (averaging 27%) compared to other agricultural units with dominant corn or wheat pollen,while in wastelands and woodlands,arboreal and Artemisia pollen percentages have higher values (averaging 20% and 19% respectively).Cruciferae has the highest pollen percentages (70%) in *** pollen assemblages and PCoA can generally identify the vegetable plots,farmlands,woodlands,wastelands,and *** and Artemisia pollens mainly appear in the western part of Anyang,which is consistent with the parent plants;Poaceae pollen mainly exist in the eastern part with more farmlands;Chenopodiaceae pollen mainly appear in the urban areas and near major roads where human influences are stronger,Cruciferae pollen can mainly be found in the urban area and in the northwest part of Anyang where more vegetables are planted.

关键词：安阳地区空间分布花粉组合单位农业

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Pollen assemblage characteristics of lakes in the monsoon fringe area of china

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Chinese Science Bulletin 2008年第4期53卷 3354-3363页

作者： TIAN Fang1,2,XU QingHai1,2,3,LI YueCong1,2,CAO XianYong1,2,WANG XueLi1,2 & ZHANG LiYan1,2 1 College of Resources and environmental Sciences,hebei Normal University,shijiazhuang 050016,china 2 hebei key laboratory of environmental change and ecological construction,shijiazhuang 050016,china 3 key laboratory of Western china’s environmental System(Ministry of Education),Lanzhou University,Lanzhou 730000,china College of Resources and environmental Sciences Hebei Normal University Shijiazhuang 050016 China hebei key laboratory of environmental change and ecological construction Shijiazhuang 050016 China key laboratory of Western china’s environmental System (Ministry of Education) Lanzhou University Lanzhou 730000 China

This paper presents the pollen assemblages from 108 surface sediment samples from 4 lakes(the Lake Daihai,Lake Hongjiannao,Lake Hulunnao and Lake Duikounao) in the monsoon fringe area of *** herb pollen taxa Artemisia,Chenopodiaceae,Poaceae and Compositae are the major components of pollen assemblages of the 4 lakes and Pinus,Betula,Quercus,Ulmus,Populus,Ostryopsis and Elaeagnaceae are frequently presented,which reflect regional and local vegetation *** mean similarity coefficients for samples from the Lake Daihai,Lake Hongjiannao,Lake Hulunnao and Lake Duikounao are 0.66 ± 0.17,0.71 ± 0.11,0.73 ± 0.12 and 0.67 ± 0.12 respectively,so pollen assemblages are relatively consistent in each lake,which shows that focusing and mixing effects have occurred before and after pollen ***,pollen assemblages do differ between sampling sites in each *** largest difference is seen in the Lake Daihai,followed by the Lake Duikounao,Lake Hulunnao and Lake Hongjiannao(The mean Euclidean distance is 20.09 ± 11.11,11.22 ± 3.64,10.67 ± 4.03 and 8.44 ± 4.51 respectively).These differences are possibly caused by the differences of focusing and mixing effects,pollen source areas,drainage areas and regional vegetation *** Lake Daihai and Lake Hongjiannao have water deeper than 5 m and strong re-suspension,focusing and mixing effects occur in the lakeshore and shallow water areas,where pollen concentrations are lower than in deeper lake *** the Lake Hulunnao and Lake Duikounao,with depths less than 5 m,re-suspension and mixing effects are obvious across the whole lake area,so pollen assemblages and pollen concentra-tions are more consistent among sampling sites in each *** between the lake samples and samples from the inflowing river reveals that wind is primary pollen transportation force in the Lake Hongjiannao,where the consistency of pollen assemblage is conspicuous,while there is greater variation in lakes where pollen input is

关键词：湖泊花粉相似系数欧几里得季风

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Miocene Bahean stratigraphy in the Longzhong Basin, northern central china and its implications in environmental change

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Science china Earth Sciences 2006年第12期49卷 1270-1279页

作者： LI Jijun1,2, ZHANG Jun1, SONG Chunhui1, ZHAO Zhijun2, ZHANG Yong1, WANG Xiuxi 1, ZHANG Jianming1 & CUI Qiaoyu1 1. key laboratory of Western china’s environmental Systems (Ministry of Education) & College of Earth and Environment Sciences, Lanzhou University, Lanzhou 730000, china 2. Jiangsu key laboratory of environmental change and ecological construction & College of Geography, Nanjing Normal University, Nanjing 210097, china 1. key laboratory of Western china’s environmental Systems (Ministry of Education) & College of Earth and Environment Sciences Lanzhou University Lanzhou 730000 China 2. Jiangsu key laboratory of environmental change and ecological construction & College of Geography Nanjing Normal University Nanjing 210097 China

Fossil mammal-riched Neogene strata are widely distributed in the southeast corner of the huge Longzhong Basin at Tianshui, Gansu Province, northern central china. Hipparion weihoense, a typical member of late Middle Miocene Bahean stage, was recently excavated at Yaodian along a well-exposed outcrop. Owing to the importance of the Bahean stage in the mammalian evolution and its potential for environmental change, we suggested a name of Yaodian Formation for the stratigra- phy, which is correlated to the Bahe Formation at Lantian, Shaanxi. High resolution paleomagnetic dating of the section shows that the Yaodian Formation covers the period between 11.67 Ma and 7.43 Ma, with the site bearing Hipparion weihoense being estimated at about 10.54―10.30 Ma, providing first magnetostratigraphic chronology for the Bahean Stage. The Yaodian Formation consists of fluvial channel deposits (11.67―10.40 Ma) at the bottom, floodplain deposits in the middle (10.40―9.23 Ma) and shallow lake sediments at the top (9.23―7.43 Ma). This upward fining sequence suggests that the relief in nearby mountain ranges such as West Qinling to the south and Huajia Ling to the north was greatly reduced after long-term denudation, fluvial transport capacity was low, and finally the drainage system was disintegrated, replaced with broad-shallow lakes in which only fine sediments like mud and marlite were deposited, indicating an old stage of development of a planation surface. A remarkable shift in ecology and climatic environment was found at 7.4―7.7 Ma when paleoclimate changed from early warm humid to late dry as indicated by sedimentary facies changed from early shallow lake sequence to late eolian red clays and a former coniferous-deciduous mixed forest was replaced by grassland, leading to great growth of Hipparion Fauna of Baodean stage in the region. Therefore, it is estimated that the present high relief of Qinling and drainage pattern did not come into being until Late Pliocene in response

关键词： Bahean stage,magnetostratigraphy,Yaodian Formation,Neogene,Longzhong Basin.

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Research on the Willingness to Accept Compensation and Compensation Sharing of Returning Land for Farming to Forestry in Zhangjiakou and Chengde Region

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Meteorological and environmental Research 2011年第5期2卷 41-44页

作者： WANG Yan-xia1,CHEN Xu-dong1,ZHANG Su-juan1,BAI Jie2,ZHANG Yi-wen3 1.Institute of Geographical Science,hebei Academy of Science,shijiazhuang 050011,china 2.Computer Department,hebei Vocational College of Politics and Law,shijiazhuang 050081,china 3.College of Resources and Environment Science,hebei Normal University,hebei key laboratory of environmental change and ecological construction,shijiazhuang 050016,china

[Objective] The aim was to study the willingness to accept compensation and compensation sharing of returning land for farming to forestry in Zhangjiakou and Chengde region.[Method] Based on the investigation of farmers’ willingness to accept ecological compensation in Zhangjiakou and Chengde region,farmers’ willingness to accept compensation was quantized,and the calculation model of sharing rate of ecological compensation was established,finally the sharing rate of ecological compensation was calculated choosing water supply quantity as reference.[Result] Farmers’ willingness to accept compensation in Zhangjiakou and Chengde region was 2 740.5 yuan/(hm2·a),and returned farmland area was 429 700 hm2 in 2008,so the willingness to accept ecological compensation was up to 1.178 billion yuan/*** addition,the ecological compensation sharing rate of government was 37.60% in Beijing,42.75% in Tianjing and 19.64% in Tangshan,and their ecological compensation funds were 443,504 and 231 million yuan,respectively.[Conclusion] The study could provide important foundation for the establishment of ecological compensation standard and implementation of ecological compensation in Zhangjiakou and Chengde region.

关键词： Zhangjiakou Chengde ecological compensation Willingness to accept compensation Sharing rate of compensation china

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A possible Younger Dryas-type event during Asian monsoonal Termination 3

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Science china Earth Sciences 2006年第9期49卷 982-990页

作者： CHEN Shitao1, WANG Yongjin1, KONG Xinggong1, LIU Dianbing1, CHENG Hai2 & R.L. Edwards2 1. College of Geography Science, Nanjing Normal University, Jiangsu key laboratory of environmental change and ecological construction, Nanjing 210097, china 2. Department of Geology and Geophysics, University of Minnesota, Minneapolis MN55455, USA 1. College of Geography Science Nanjing Normal University Jiangsu Key Laboratory of Environmental Change and Ecological Construction Nanjing 210097 China 2. Department of Geology and Geophysics University of Minnesota Minneapolis MN 55455 USA

Seven U-Th dates, 560 δ 18O data and microscopic sequences were measured for sta- lagmites from two high-altitude caves in Shennongjia area, Hubei Province. Variations of the de- cadal-resolution stalagmite δ 18O record from Swan Cave (1600 m elevation) reflect large spatial changes in circulation strength and precipitation of Asian monsoon. The evidence comes from a great similarity among the stalagmite δ 18O records from Nanjing, Jiangsu Province; Libo, Guizhou Province and here studied area during the last deglaciation, including a part interval of Younger-Dryas event and Bolling-Allerod. A 30-year-resolution stalagmite δ 18O record from Yongxing Cave (1400 m eleva- tion), 70 km away from Swan Cave, reveals a rapid transition of Asian monsoon climate during Ter- mination 3 at about 245±5 kaBP. Based on 3 U-Th dates and about 5000 continuous annual bands, a millennial dry episode has been observed during Asian monsoonal Termination 3 from the Yongxing δ 18O profile. With respect to its structure, duration and transition, the dry reversal, as indicated by our stalagmite δ 18O record, generally agrees with the pattern of the YD event well-expressed in the Chi- nese stalagmite δ 18O records. This YD-type event is characterized by a large decrease in δ 18O value as much as 2.30‰, more than half of the δ 18O excursion between glacial/interglacial periods, and lasts 1371±59 a determined by the annual counting chronology. After this event, the monsoon climate shifted abruptly into the interglacial period within 74±4 a. Our data corroborate the view that the re- peated occurrence of YD-type event was not an “accident”, possibly resulted from the coupling of ice-sheet and oceanic/atmospheric circulations.

关键词： stalagmite, Termination 3, Asian monsoon, YD-type event, Shennongjia, Hubei Province.

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Effect of water turbidity caused by suspended sands on Potamogeton crispus

Effect of water turbidity caused by suspended sands on Potam...

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International Symposium on Green Technology and Ecosystem Health

作者： Wen Teng Wang Guoxiang Qiang Li Jiangsu key laboratory of environmental change and ecological construction College of Geographical Science Nanjing Normal University Nanjing 210097 china

＜正＞Turions of Potamogeton crispus were planted in ponds with different turbidities （30NTU, 60NTU, 90NTU, 120NTU, 150NTU）. The turbidity was caused by suspended sands （less than 100 μm in diameter）. To determin... 详细信息

关键词： sands water turbidity Potamogeton crispus photosynthetic chlorophyll characteristic.

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Simple Analysis Based on the ecological Footprint of Linyi City for Sustainable Development

Simple Analysis Based on the Ecological Footprint of Linyi C...

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海峡两岸三地环境与资源学术研讨会暨第二届中国环境资源与生态保育学会会员代表大会

作者： LIANG Renjun~(1,2),QI Xiangzhen~2 1.School of Chemistry & Resources Environment,Linyi Normal University,P.R.china,276005 2.Jiangsu key laboratory of environmental change and ecological construction,P.R.china,210046

By using analysis on ecological footprints through comparison of ecological footprint and ecological capacity,in this paper,the principle of ecological footprint is elaborated and also the ecological footprint of Linyi in 2006 is practiced and *** show that per capita ecological footprint is 1.9737 hm,per capita ecological capacity is 0.3564 hm,per capita ecological deficit is 1.6173 *** ecological footprint need of ten thousands yuan GDP is 0.6958 hm,being greatly lower than the national average *** the economic and social developments were in an unsustainable development ***, the reasons for the high ecological deficit in Linyi were analyzed and the countermeasures of how to lower the ecological deficit and realize sustainable development were put forward.

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Effect of submerged plant Potamogeton crispus on the concentrations of phosphorus fractions in overlying water

Effect of submerged plant Potamogeton crispus on the concent...

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2010 IEEE 2nd Symposium on Web Society

作者： Lizhi Wang Guoxiang Wang Zhenfei Yu Xiankun Gu Qiumin Chen College of Geographical Science,Nanjing Normal University Jiangsu key laboratory of environmental change and ecological construction Nanjing china

＜正＞The effect of submerged plant *** on the concentrations of phosphorus（P） fractions in overlying water and seasonal variation were investigated under simulating *** growth and decomposition of *** were *** mechanism of the P exchange at sediment-water interface in shallow lake was elucidated *** results indicated that dissolved total P（DTP） was the dominated P fraction in the overlying water in the *** P（TP）, DTP,paniculate P（PP）,dissolved organic P（DOP）, soluble reactive P（SRP） were decreased and maintained in a low level during the growth period of *** P fractions ranged between 0.02 and 0.08mg/l during growth period of *** was the dominated P fraction in the overlying water in the decomposition period of *** average proportion of SRP to TP was 62.37%in the decomposition period.

关键词： Potamogeton crispus phosphorus overlying water

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基于信息扩散理论的邢台市农业旱灾风险分析

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水土保持研究 2011年第6期18卷 212-215页

作者：张瑞清李敏陈佳飞商慧莲商彦蕊河北师范大学资源与环境科学学院河北省环境演变与生态建设重点实验室石家庄050016

以邢台市2000-2007年的统计数据为基础,应用基于信息扩散理论的模糊数学方法,建立邢台市农业旱灾风险评价模型,对邢台旱灾风险进行分析。结果表明:邢台旱灾受灾概率在受灾指数为10%时达到峰值,在受灾指数超过30%之后几乎为零;成灾风险... 详细信息

以邢台市2000-2007年的统计数据为基础,应用基于信息扩散理论的模糊数学方法,建立邢台市农业旱灾风险评价模型,对邢台旱灾风险进行分析。结果表明:邢台旱灾受灾概率在受灾指数为10%时达到峰值,在受灾指数超过30%之后几乎为零;成灾风险值显示邢台市在应对旱灾方面已取得显著成效,但该市平均每1.7a遭受到一次受灾面积超过10%的旱灾,农业旱灾仍不容忽视。研究结果增加了对邢台市旱情的清楚认识,对区域防灾减灾的可持续发展具有指导意义。

关键词：信息扩散农业旱灾风险分析邢台

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水位变化对三峡库区低位狗牙根种群的影响

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生态环境学报 2010年第3期19卷 652-656页

作者：李强丁武泉朱启红宋力曹优明蒋山泉江苏省环境演变及生态建设重点实验室江苏南京210097 重庆文理学院化学与环境工程学院重庆永川402160

2009年调查研究了三峡库区长寿段消落带的狗牙根(Cynodon dactylonL.)种群,探讨了库区水位变化对低位狗牙根种群的影响。结果表明,156m处狗牙根地下茎的总茎长、总茎节数和总茎节数/总茎长大于150m处的狗牙根,分别比后者多20.3%、30.1%... 详细信息

2009年调查研究了三峡库区长寿段消落带的狗牙根(Cynodon dactylonL.)种群,探讨了库区水位变化对低位狗牙根种群的影响。结果表明,156m处狗牙根地下茎的总茎长、总茎节数和总茎节数/总茎长大于150m处的狗牙根,分别比后者多20.3%、30.1%、11.3%;而其地下茎的总芽数/总茎长、萌芽数和萌芽率分别比后者低7.5%、34.3%、74.9%。同时,156m处狗牙根分株的株数、茎长、叶宽、叶长低于150m处的狗牙根,分别比后者少了26.2%、10.8%、19.0%、37.9%;其茎节数、茎节数/茎长、叶片数、根长较大,分别比后者增加了18.7%、34.2%、10.0%、22.6%。156m处狗牙根植株分株的鲜质量、干质量、鲜质量/总鲜质量、干质量/总干质量分别比150m处的狗牙根低32.5%、13.2%、18.2%和14.2%;其地下茎的鲜质量、干质量、鲜质量/总鲜质量、干质量/总干质量分别比后者高5.8%、17.5%、27.2%、15.2%;且前者的分株、地下茎和根的干鲜质量比均分别比后者高29.6%、12.5%和17.6%。表明,库区水位变化显著促进了150m处狗牙根地下茎茎节伸长、芽形成、芽萌发和分株的生长。因而,低位狗牙根对库区水位变化具有较强的适应能力。

关键词：三峡水库蓄水水位消落带狗牙根

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