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Research on the disappearance causes of the Tenghualuo Site in Lianyungang,jiangsu Province, China

Chinese Science Bulletin 2008年第S1期53卷 161-176页

作者： LI Lan ZHU Cheng jiang fengqing ZHAO QuanHong LIN liuGeng School of Geographic and Oceanographic Sciences Nanjing UniversityNanjing 210093China Xinjiang Institute of Ecology and Geography Chinese Academy of SciencesUrumqi 830011China State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China Archaeological Institute of Nanjing Museum Nanjing 210018China

With brilliant civilization during the transitional period from a original clan society to a state society in prehistory,the Neolithic Tenghualuo Site in Lianyungang was discovered by archaeological survey in 1989,which was titled as‘one of the nation’s ten great archeological discoveries in 2000’.However,the transgression and the anthropogenic environment deterioration have ever been employed to explain the abandonment of the *** on a dynasty framework established by the 14 C dating,and using the experimental methods such as micro-paleontology identification in foraminifera and charophytes, the content test of Rb and Sr,susceptibility analysis as well as granularity and sedimentary facies analysis,some researches on the sediments from the two exploration layers at Tenghualuo Site were conducted,and the following new findings have been gained:Firstly,foraminifera which are relevant to the marine environment were not found in the sediment layer,however,25 charales,which usually live in the freshwater environment,in 07LTT1 exploration samples were *** them,3 charales were found in the samples from the forth sediment layer below the late Longshan Cultural layer and 22 charates were from the second sediment layer above the late Longshan Cultural ***,5 plant seeds and 41 fungal spores,together with many carbonation holes,plant seed shells,as well as their roots and stems were also found in the second sediment layer above the late Longshan Cultural ***,the cumulative probability curves of the sediments’granularity in both the last and its overlying culture intermittent layers have characteristics of three-phase river sediment curve,and the ratios between Rb and Sr are both quite high in samples from two layers sedimented during the disappearing time of the *** above-mentioned evidences indicate that disappearance of the Tenghualuo Site was not related to the *** late Longshan Culture of the site could be completel

关键词： Tenghualuo Site foraminifera charophytes granularity sedimentary facies Rb and Sr ratio disappearing reasons

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Identifying hot spots of long-duration extreme climate events in the northwest arid region of China and implications for glaciers and runoff

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Research in Cold and Arid Regions 2022年第6期14卷 347-360页

作者： ShaoPing Wang YongJian Ding fengqing jiang XiaoDong Wu Jie Xue State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China Key Laboratory of Ecohydrology of Inland River Basin Chinese Academy of SciencesNorthwest Institute of Eco-Environment and ResourcesLanzhouGansu 730000China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China China-Pakistan Joint Research Center on Earth Sciences CAS-HECIslamabad 45320Pakistan State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqiXinjiang 830011China

China’s Northwest Arid Region(NAR),with dry and cold climate conditions and glaciers widely developed in the high mountains,provides vital water resources for *** consecutive cold,warm,dry and wet days have much higher impacts on the water cycle process in this region than extreme temperature and precipitation events with short durations but high *** and nonparametric trend analysis methods widely used in climatology and hydrology are employed to identify the temporal and spatial features of the changes in the consecutive cold,warm,dry and wet days in the NAR based on China’s 0.5°×0.5°meteorological grid datasets of daily temperature and precipitation from 1961 to *** study found that(1)the consecutive cold days(Cold Spell Duration Indicator,CSDI),and the consecutive dry days(CDD)decreased,while the consecutive warm days(Warm Spell Duration Indicator,WSDI),and the consecutive wet days(CWD)increased from 1961 to 2018,(2)and the eastern Kunlun Mountains were the hot spots where all of these consecutive climate indices changed significantly,(3)and the changes in these consecutive climate indices were highly correlated with the rise in the Global Mean Land/Ocean Temperature *** results indicated that winters tended to warmer and dryer and summer became hotter and wetter during 1961–2018 in the NAR under the global warming,which can lead to the sustained glacier retreat and the increase in summer runoff in this region,and the eastern Kunlun Mountains are the area where could face high risks of water scarcity and floods if the changes in these climate indices continue in the *** the vulnerability of the socio-economic systems in the NAR to a water shortage and floods,it is most crucial to improve the strategies of water resources management,disaster prevention and risk management for this region under climate change.

关键词： Water resources Floods Consecutive cold/warm/dry/wet days Hot spot Glaciers

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Variations and trends of the freezing and thaw- ing index along the Qinghai-Xizang Railway for 1966-2004

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Journal of Geographical Sciences 2008年第1期18卷 3-16页

作者： jiang fengqing HU Ruji LI Zhen Xinjiang Institute of Ecology and Geography CAS Urumqi 830011 China

Annual freezing and thawing index of 7 meteorological stations along the Qing- hai-Xizang Railway were calculated based on daily maximum and minimum temperature records for 1966-2004. Trends of annual freezing and thawing index were analyzed using the Mann-Kendall test and a simple linear regression method. The results show that： 1） The mean annual freezing indices range from 95 to 2300℃·d and the mean annual thawing indices range from 630 to 3250℃·d. The mean annual freezing index of the 7 stations exhibited decreasing trends with decreasing rate of -16.6- -59.1 ℃·d/10a. The mean annual thawing index of these 7 stations showed increasing trends with the related decreasing rate is 19.83-45.6℃·d/10a. 2） The MK trend test indicated the significant decreasing trends （significant at 〈 0.05 significant level） in the annual freezing index for most stations except for Golmud. The significant increasing trends can be observed in the annual thawing index for 4 stations except Golmud and Tuotuohe. Golmud was the only station with no trends in both annual freezing and annual thawing index.

关键词： freezing and thawing index global warming trends Qinghai-Xizang Railway

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Assessing changes in extreme precipitation over Xinjiang using regional climate model of PRECIS

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Research in Cold and Arid Regions 2015年第2期7卷 170-179页

作者： YanWei Zhang QuanSheng Ge fengqing jiang JingYun Zheng WenShou Wei Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences College of Environment and Planning Shangqiu Normal University College of Geographical Science Shanxi Normal University Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences

In this paper, an analysis, with the simulation of PRECIS （Providing Regional Climate for Impact Studies）, was made for future precipitation extremes, under SRES （Special Report on Emission Scenarios） A2 and B2 in IPCC （Intergovernmental Panel on Climate Change） AR4. The precipitation extremes were calculated and analyzed by ETCCDI （Climate Change Detection and Indices）. The results show that：（1） In Present Scenario （1961 1900）, PRECIS could capture the spatial pattern of precipitation in Xinjiang. （2） The simulated annual precipitation and seasonal precipitation in Xinjiang had a significantly positive trend and its variability had been deeply impacted by terrain. There was a strong association between increasing trend and the extreme precipitation＇s increase in frequency and intensity during 1961-2008. Under SRES A2 and B2, extreme precipitation indicated an increasing tendency at the end of the 21st century. The extreme summer pre- cipitation increased prominently in a year. （3） PREC1S＇s simulation under SRES A2 and B2 indicated increased frequency of heavy precipitation events and also enhancement in their intensity towards the end of the 21 st century. Both A2 and B2 scenarios show similar patterns of projected changes in precipitation extremes towards the end of the 21st century. However, the magnitude of changes in B2 scenario was on the lower side. In case of extreme precipitation, variation between models can exceed both internal variability and variability of different SRES.

关键词： climate change PRECIS Xinjiang extreme precipitation IPCC

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Archaeological sites distribution and its physical environmental settings between ca 260-2.2 ka BP in Guizhou, Southwest China

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Journal of Geographical Sciences 2014年第3期24卷 526-538页

作者： LI Kaifeng ZHU Cheng jiang fengqing LI Bing WANG Xinhao CAO BO ZHAO Xiaofan School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210023 China Xinjiang Institute of Ecology and Geography CAS Urumqi 830011 China College of Hydrology and Water Resources Hohai University Nanjing 210098 China Guizhou Provincial Institute of Cultural Relics and Archaeology Guiyang 550004 China

This study presents an analysis of the spatial-temporal distribution of 230 ar- chaeological sites in Guizhou Province, Southwest China for three selected time periods from the Paleolithic Age to the Shang-Zhou Dynasties. The relationship between archaeological sites distribution and environmental changes is also discussed based on paleo-environmental proxies of 6480 and δ3C recorded in stalagmites from Southwest China. The results show that： in the Paleolithic Age （260-10 ka BP）, archaeological sites were concentrated in the central, northwestern and southwestern parts of Guizhou, where the high-altitudinal karst landforms with many natural caves suitable for human habitation are developed. In the Neo- lithic Age （10-3.6 ka BP）, most of human settlements were concentrated in the central, northwestern and southwestern parts, while, a fewer sites were found on river terraces in the southern and eastern parts, and the intermontane basins in the central and western Guizhou. During the Shang-Zhou Dynasties （3.6-2.2 ka BP）, the sites were mainly distributed in the intermontane basins and on river terraces, which were suitable for primitive aerial farming. The analysis of paleo-environmental proxies of 6180 and δ3C since 260 ka BP suggested that climate fluctuations had little imPact on human settlements in this study area. The distinct physical environment, especially the spatial patterns of karst landforms and arable land played an important role in the archaeological sites distribution of Guizhou.

关键词： Guizhou Province archaeological sites temporal-spatial distribution the Paleolithic Age to theShang-Zhon Dynasties physical environment

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Rise and decline of ancient salt industry revealed by Na and Ca concentrations in sediments at Zhongba site, Chongqing

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Journal of Geographical Sciences 2008年第3期18卷 328-340页

作者： ZHU Cheng jiang fengqing MA Chunmei XU Weifeng HUANG Linyan ZHENG Chaogui LI Lan SUN Zhibin School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210093 China Xinjiang Institute of Ecology and Geography CAS Urumqi 830011 China Department of Geography College of Chuzhou Chuzhou 239012 Anhui China Sichuan Provincial Institute of Archeology Chengdu 610041 China

Based on dynastic period division and AMS ^14 C dating performed on the sedimentary layers at Zhongba and Yuxi sites,and also the analysis of Na,Ca and Mg of 201 sedimentary samples from Zhongba site and that of Ca and Na in 47 sedimentary samples from Yuxi by using an inductively coupled plasma-mass spectrometry（ICP）,we found that there were 35 time periods when the contents of Ca and Na were reversely correlated,*** the content of Ca was the highest,the content of Na was the lowest,and vice versa. Among them,there were 21 time periods when the content of Ca was the highest,and Na was the lowest,indicating that there were about 21 prosperous periods of ancient salt production at Zhongba site since *** 14 time periods with the peak values of Na while the low values of Ca indicate 14 declined periods of salt production at Zhongba site since *** conclusion obtained from the reverse relationship between Ca and Na contents in this paper is consistent with that＂the salt production at Zhongba site started in the new stone age,developed in the Xia and Shang dynasties,reached at the heyday in periods from the Western Zhou to the Han Dynasties,maintained stable to develop in the Tang and the Song dynasties,and gradually declined after the Song Dynasty because the sea salt were conveyed into Sichuan region,however,still had production in the 1970s-1980s＂,educed from archeological *** the above mentioned results indicate that there is a reverse relationship obviously between the contents of Na and Ca in sediments at Zhongba site for ancient salt production,which can be used to reveal the process of rise and decline of ancient salt industry at Zhongba site.

关键词： Zhongba site Zhongxian County reverse relationship between contents of Na and Ca rise and decline of early salt production

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青藏铁路沿线1966-2004年冻结与融化指数的变化趋势

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地理学报 2007年第9期62卷 935-945页

作者：姜逢清胡汝骥李珍中国科学院新疆生态与地理研究所乌鲁木齐830011

利用日气温观测值计算了青藏铁路沿线7个主要气象站1966-2004年的年冻结与融化指数,分析了这些指数的统计与分布特征,并应用两种趋势检验方法:非参数Mann-Kendall检验法和简单线性回归法分析了这些台站年冻结与融化指数的变化趋势。结... 详细信息

利用日气温观测值计算了青藏铁路沿线7个主要气象站1966-2004年的年冻结与融化指数,分析了这些指数的统计与分布特征,并应用两种趋势检验方法:非参数Mann-Kendall检验法和简单线性回归法分析了这些台站年冻结与融化指数的变化趋势。结果表明,青藏铁路沿线多年平均冻结指数大致分布在95～2300oC·日之间,多年平均融化指数大致在630～3250oC·日之间。7个站点的冻结指数均呈减少趋势,其线性倾向率分布在-16.6～-59.1oC·日/10a之间;融化指数均呈增加趋势,其线性倾向率分布在19.8～45.6oC·日/10a之间。MK趋势检验的结果显示,除格尔木表现出微弱的减少趋势外,其他站点都呈现了0.05水平下的显著减少趋势;年融化指数除格尔木和沱沱河表现出弱增加趋势外,其他5个台站都显示出了0.05水平下的显著增加趋势。简单线性回归方法得到的趋势结果与MK趋势检验结果相一致。

关键词：冻结与融化指数永久与季节冻土全球变暖趋势青藏铁路

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天山北坡前山带降水分布型对荒漠植被的影响——基于逐日降水数据和NDVI分析

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生态学报 2020年第21期40卷 7790-7804页

作者：刘超闫小月姜逢清中国科学院新疆生态与地理研究所乌鲁木齐830011 中国科学院大学北京100049 中国科学院新疆生态与地理研究所荒漠与绿洲生态国家重点实验室乌鲁木齐830011

降水分布型对荒漠植被的影响规律的揭示是理解全球气候变化下干旱区地表植被覆盖变化过程的基础。基于新疆天山北坡前山带1999—2014年生长季MODIS 1B逐日遥感资料和7个气象站点降水观测数据,运用GIS软件提取出气象站点周围荒漠植被的... 详细信息

降水分布型对荒漠植被的影响规律的揭示是理解全球气候变化下干旱区地表植被覆盖变化过程的基础。基于新疆天山北坡前山带1999—2014年生长季MODIS 1B逐日遥感资料和7个气象站点降水观测数据,运用GIS软件提取出气象站点周围荒漠植被的归一化植被指数(Normalized Difference Vegetation Index,NDVI)值,利用相关分析、决策树判识分析等方法,系统分析天山北坡前山带生长季荒漠植被NDVI在不同量级降水和降水型下的时空变化及其持续性等特征,并探究两者的相关程度。研究表明:生长季NDVI在不同时间、空间尺度上对降水存在一定规律的响应特征。从时间尺度来看,NDVI对降水的响应延迟现象随时间越来越不明显,两者相关性先增后减,在生长季中期相关性最强;空间尺度上,各区域差异较大,NDVI对降水的响应快慢与研究区各地的降水量大小明显相关。不同地区的年内NDVI变化趋势也不相同,18天以上的干期长度影响显著。无论研究区域中任一地区年均降水量大小,都一致表现出在生长季期间降水较多的时期,植被覆盖普遍出现为基本不变或轻微改善的趋势,相反在降水较少的时期,植被覆盖普遍出现轻微退化或基本不变(趋势斜率为负的极小值)的趋势。未来可以通过计算体现某地区植被覆盖变化趋势的值,来判断这一时期该地区大气的干湿程度。另外不同量级降水和降水分布型对NDVI变化影响明显,在生长季早、中期,降水量在6.1—12.0 mm时对荒漠植被的生长最为有利,NDVI增长幅度在0.15以上,并且对生长季早、中期植被生长最佳的降水分布型分别为B型降水(指连续两天出现降水且第一天的降水量大于第二天的降水量)和A型降水(指连续两天出现降水,第一天的降水量小于第二天的降水量)。揭示NDVI对降水的响应规律,可为干旱区、半干旱区合理生产灌溉、节约用水、生态恢复与重建等提供理论依据。

关键词： NDVI 降水相关分析响应变化天山北坡前山带

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体外冲击波碎石机技术改进及临床研究

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中国医疗器械杂志 2013年第5期37卷 340-342页

作者：蒋逢庆深圳市新元素医疗技术开发有限公司深圳市518029

介绍了***-6X型电磁式体外冲击波碎石机技术改进后,对30例泌尿系结石患者进行了治疗,其结果为:治愈率76.67%、有效率20.00%、无效率3.33%。治愈和有效率为96.67%,高于该设备改进前。

关键词：体外冲击波碎石机技术改进临床研究

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新疆气候与环境的过去、现在及未来情景

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干旱区地理 1998年第1期21卷 1-9页

作者：姜逢清胡汝骥马虹中国科学院新疆地理研究所乌鲁木齐830011

在分析近年来新疆地质时期与历史时期气候与环境研究方面大量的文献资料与成果，并对现代器测时期的气候变化问题进行讨论的基础上，利用综合分析法构画了新疆下世纪上半叶气候与环境的可能情景，认为新疆气候与环境初建于的晚白垩世，... 详细信息

在分析近年来新疆地质时期与历史时期气候与环境研究方面大量的文献资料与成果，并对现代器测时期的气候变化问题进行讨论的基础上，利用综合分析法构画了新疆下世纪上半叶气候与环境的可能情景，认为新疆气候与环境初建于的晚白垩世，主要形成于第三纪，至今总的干旱情势并未改变。但在漫长的地质时期中也存在过由于气候波动而出现冷暖与干湿的变化。预计下世纪上半叶新疆干旱的总格局不会改变，但比目前会略显湿润，气温将略有增加，此后会向百年尺度冷的方向发展。

关键词：新疆气候环境气候情景气候变化

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