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Preliminary results of the study on wind erosion in the Qinghai-Tibetan Plateau using 13.Cs technique

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chinese Science Bulletin 2000年第11期45卷 1019-1025页

作者： YAN Ping, DONG Guangrong, ZHANG Xinbao & ZHANG Yiyun1. Key Laboratory of Environmental Change and Natural Disaster, the Ministry of Education of China, Beijing Normal University, Beijing 100875, China 2. institute of desert {2.,{3., lanzhou 73.000, China 3. institute of Mountain Hazards and Environment,{3., Chengdu 610041, China 4. Department of Physics, Sichuan Union University, Chengdu 610041, China Key Laboratory of Environmental Change and Natural Disaster the Ministry of Education of China Beijing Normal University Beijing China institute of desert {2. Chinese Academy of Sciences Lanzhou China institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu China Department of Physics Sichuan Union University Chengdu China

The worldwide fallout of caesium-13. (13.Cs) associated with the nuclear weapon tests during the 1950s and 1960s has provided a valuable man-made tracer for studies of soil erosion and sediment delivery. But relatively few {2.ers have used it to estimate wind erosion. In this note, the 13.Cs technique is introduced into the studies of wind erosion and its modern processes inthe Qinghai-Tibetan Plateau. Two 13.Cs reference inventories of 982.11 and 2.3.6.04 Bq · m-2.wereestablished preminarily, distributed in the south and middle-north parts of the studied arearespectively. By analyzing the patterns of 13.Cs depth profiles from sampling sites, the aeolianprocesses of erosion and deposition in nearly 40 years have been revealed, i.e. the shrub coppicedunes (S1) and semi-fixed dunefields (S3. experienced the alternation of erosion and deposition,while the grasslands (S4, S6 and S7) and dry farmlands (S5) suffered erosion only. By using 13.Csmodel, the average wind erosion rates for shrub coppice

关键词： 13.Cs technique Qinghai-Tibetan Plateau wind erosion.

A high-resolution late Pleistocene record of pollen vegetation and climate change from Jingning, NW China

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Science China Earth sciences 2006年第2期49卷 154-162页

作者： LI Chunhai12. TANG Lingyu1, FENG Zhaodong3.4, ZHANG Hucai2. WANG Weiguo3.& AN Chenbang3.1. Nanjing institute of Geology and Palaeontology, chinese academy of sciences, Nanjing 2.0008, China 2. Nanjng institute of Geography and Limnology, chinese academy of sciences, Nanjing 2.0008, China 3. Environment and Resources College, lanzhou University, lanzhou 73.000, China 4. Beijing Normal University, Beijing 100875, China Nanjing institute of Geology and Palaeontology Chinese Academy of Sciences Nanjing China Nanjng institute of Geography and Limnology Chinese Academy of Sciences Nanjing China Environment and Resources College Lanzhou University Lanzhou China Beijing Normal University Beijing China

With the support of 18 AMS-14C data, a high-resolution pollen record from the Suancigou section at Jingning, Gansu Province was established. Our results showed that the vegetation ex-perienced a series of changes characterized by the alternative growth and decline of forest and steppe components during the period from 44.2.to 11 ka B.P. in the Jingning area. Over the period of 44―2. ka B.P. (MIS3., coniferous forests were flourishing, indicating a humid climate with the tem-perature being lower than that of the present. Since 2.0}ka B.P., the vegetation was dominated by steppe-{2. steppe under a cold and dry condition, and entered the Last Glacial Maximum domi-nated by {2. steppe. Several periods of the marked decrease in the arborous pollen content in Suancigou well corresponded to the North Atlantic Heinrich events, especially to Heinrich event 3. further supporting that the Heinrich events were well reflected by the pollen record in the Loess Pla-teau as well.

关键词： Western Loess Plateau, pollen record, climatic change, late Pleistocene.

New views on age of the Salawusu Formation of Late Pleistocene in northern China

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chinese Science Bulletin 1999年第7期44卷 646-650页

作者： DONG Guangrong, SU Zhizhu and JIN Heling institute of desert {2. ,{3. , lanzhou 73.000, China Xi an Laboratory of Loess and Quaternary Geology,{3. , Xi’ an 710054, China institute of Loess Plateau , Shanxi University, Taiyuan 03.006, China institute of desert {2. Chinae Academy of Sciences Lanzhau China Xi’an Laboratory of Lass and Quaternary Geology Chinese Academy of Sciences Xi’an China institute of Lass Plateau Shanxi University Taiyuan China

The Salawusu Formation in the Salawusu River basin of Inner Mongolia is a typical sequence of the Upper Pleistocene in northern China. However, there have been some different views about the division and age of stratigraphic facies since the establishment of the Salawusu Formation. According to the stratigraphic subdivision and dating of the Dishaogouwan section, it is thought that the fluviolacustrine-aeolian sand sequence from the Dishaogouwan section can be compared with loess, deep-sea deposit records and climatic fluctuations of glacial period. The Salawusu Formation of fluviolacustrine facies was formed in the last interglacial period from 140 to 70 ka BP, roughly corresponding to the fifth stage of deep-sea oxygen isotope, and developed in the same period as the palaeosol S1 on the Loess Plateau; the aeolian sand of the Chengchuan Formation was formed in the last glacial period from 70 to 10 ka BP, constituting the heteropic geological body along with the Malan Loess on the Loess Plateau; the

关键词： Salawusu Formation age deep-sea oxygen isotope.

Reconstructing mean maximum temperature of growing season from the maximum density of the Schrenk Spruce in Yili,Xinjiang,China

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chinese Science Bulletin 2009年第13期54卷 2300-2308页

作者： CHEN Jin1,2.3.WANG LiLi1,4,5,ZHU HaiFeng1 & WU Pu1 1 institute of Geographic {2. and Natural Resources {2.,{3. academy of {2.,Beijing 100101,China 2.Graduate University of chinese academy of sciences,Beijing 100049,China 3.institute of Vertebrate Paleontology and Paleoanthropology,{3. academy of {2.,Beijing 100044,China 4 institute of Tibetan Plateau {2.,{3. academy of {2.,Beijing 100085,China 5 institute of desert and Meteorology,China Meteorological Administration,ürümqi 83.002.China institute of Geographic sciences and Natural Resources {2. Chinese Academy of Sciences Beijing China Graduate University of chinese academy of sciences Beijing China institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing China institute of Tibetan Plateau research Chinese Academy of Sciences Beijing China institute of desert and Meteorology China Meteorological Administration Ürümqi China

To study the historical temperature variation in Yili of Xinjiang,the tree-ring chronologies of maximum density(MXD) and tree-ring width(TRW) were established with the Schrenk Spruce(Picea schrenkiana *** Mey) collected from six sites to analyze the characteristics and ability of response to climate *** results suggest that the MXD chronology of the Schrenk Spruce from different sampling sites responded to climate change well and were positively correlated with the mean maximum temperature and the mean temperature from April to August in the study *** mean maximum temperature anomaly from April to August,spanning the years from 1848 to 2.00,was reconstructed by three MXD chronologies which were selected by stepwise *** reconstructed function was stable and explained 56.2. of the *** reconstructed results indicated a cold span of 153.years in spring and summer from the beginning of the 1950s to the beginning of the 1970s in the Yili *** strongly increasing tendency was detected in the mean maximum temperature anomaly from April to August during this reconstructed period.

关键词：平均最高气温伊犁谷地最大密度云杉胡杨生长季节新疆树木年轮宽度

On the sand surface stability in the southern part of Gurbantünggüt desert

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中国科学：地球科学英文版 2005年第6期48卷 778-785页

作者： WANG Xueqin1,2. WANG Tao1, JIANG Jin2.& ZHAO Congju2.1. Laboratory of Blown Sand Physics and desert Environment, Cold and Arid Regions of Environmental and Engineering research In-stitute,{2.,{3., China 2. Xinjiang institute of Ecology and Geography,{2., Urmqi 83.011, China Correspondence should be addressed to Wang Xueqin Laboratory of Blown Sand Physics and desert Environment Cold and Arid Regions of Environmental and Engineering Research In-stitute Chinese Academy of Sciences Lanzhou China Xinjiang institute of Ecology and Geography Chinese Academy of Sciences Urümqi China

Longitudinal dunes are the most widespread dune types in the world sand seas but comprehensive study on the sand surface stability is scarce. The southern part of Gurbantnggt desert is mainly covered by longitudinal dune in which fixed and semi-fixed dunes occupy over 80% of the total area. Systematic analysis on the climatic conditions, the soil moisture and vegetation distributions, and the sand surface activities showed that the fixed and semi-fixed dunes are in a comprehensive low-energy wind environment. Snow cover and frozen soil provide a good protection to the ground surface in winter. The temporal distribution of precipitation and corresponding variation of temperature create a favorable condition for the desert plants growth, especially for the ephemeral plants. The occurrence of effective winds for sand moving in April to June coincides with the stage of relatively wet sand surface and good vegetation cover, which effectively keep the sand surface stable at the interdune and the plinth of the dunes. Activity sand surface appears only at the crest and the upper part of the sand dunes.

关键词： Gurbantünggüt desert, longitudinal dune, sand surface stability.

Growth characteristics and response to climate change of Larix Miller tree-ring in China

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Science China Earth sciences 2010年第6期53卷 871-879页

作者： SUN Yu1,4, WANG LiLi1,2.3. CHEN Jin5, DUAN JianPing1,4, SHAO XueMei1,2.& CHEN KeLong6 1 institute of Geographic {2. and Natural Resources {2.,{3., Beijing 100101, China 2.institute of Tibetan Plateau {2.,{3., Beijing 100085, China 3.institute of desert and Meteorology, China Meteorological Administration, Urumqi 83.002. China 4 Graduate University of{3., Beijing 100049, China 5 institute of Vertebrate Paleontology and Paleoanthropology,{3., Beijing 100044, China 6 School of Life and Geography {2., Qinghai Normal University, Xining 810008, China institute of Geographic sciences and Natural Resources {2. Chinese Academy of Sciences Beijing China Graduate University of chinese academy of sciences Beijing China institute of Tibetan Plateau research Chinese Academy of Sciences Beijing China institute of desert and Meteorology China Meteorological Administration Urumqi China institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing China School of Life and Geography sciences Qinghai Normal University Xining China

As one of the earliest species used in dendrochronological studies, Larix responds sensitively to climate change. In this study, nine larch species and one variety from eleven sites were collected to study the growth characteristics of tree-ring width using dendrochronological methods. Ten residual tree-ring chronologies were developed to analyze their relationships with regional standardized anomaly series by Pearson’s correlation analysis. The results suggest that most of the chronologies had significantly positive correlations with the mean temperature and mean maximum temperature in May. The spring temperature evidently limited the radial growth of the larch species without precipitation control. The largest mean tree-ring width was found in Himalayan Larch in Jilong, whereas Master Larch in Si’er reflected the smallest mean value. Both species presented little climate information in this study. chinese, Potanin, and Tibetan larches are significantly correlated with climate change, implying a huge potential for climate history reconstruction. The elevation of the sampling sites appears to be an important condition for tree-ring growth of larches responding to climate factors.

关键词： Larix Miller tree-ring climate change mean temperature in May

METHODS FOR MONITORING AND ASSESSING SANDY desertIFICATION IN THE NORTH CHINA

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中国沙漠 1999年第1期 7-12页

作者： WANG Tao ①② \ Toshiaki IMAGAWA ③\ WU Wei ① (①institute of desert {2.,{3., lanzhou\ 73.000) (②Fellowship of Science and Technology Agency, Japan) (③National institute of Agro-Environmental sciences, 3.1-1, Kannon

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１ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｌａｎｄｄｅｇｒａｄａｔｉｏｎｈａｓｂｅｅｎｓｐｒｅａｄｉｎｇｑｕｉｃｋ－ｌｙｏｖｅｒｌａｓｔｄｅｃａｄｅｓｉｎｔｈｅＮｏｒｔｈＣｈｉｎａ，ｗｈｉｃｈｉｍ－ｐａｃｔｅｄ１１ｐｒｏｖｉｎｃｅｓａｎｄ２１２ｃｏｕｎｔｉｅｓ...

关键词： The North China\ Sandy desertification\ Monitoring and assessing methods

research progress of desert science in China

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chinese Science Bulletin 2000年第24期45卷 2209-2213页

作者： XIA Xuncheng & FAN ShengyueXinjiang institute of Ecology and Geography, chinese academy of sciences, Urumqi 8{2.011, China Cold and Arid Region Environment and Engineering {2. institute. chinese academy of sciences, lanzhou 73.000. China Xinjiang institute of Ecology and Geography Chinese Academy of Sciences Urumqi China Cold and Arid Region Environment and Engineering research Instiute Chinese Academy of Sciences Lanzhou China

research of desert science in China began in the 19{2.s, when Chen Zongqi et al. first made apreliminary investigation in several deserts. Shortly after the founding of the People’s Republic ofChina a few studies were carried out to meet the demand for the establishment of windbreak andsandbreak forests, for example, the studies of moving sand dunes in Yulin. Jingbian and Dingbianregions of Shaanxi Province. However, the comprehensive study of desert science in China

关键词： research progress of desert science in China

Respondence and feedback of modern sand deserts to climate change ——A case study in Gurbantunggut desert

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chinese Science Bulletin 2000年第12期45卷 1137-1142页

作者： WEI WenshouXinjiang institute of Ecology and Geography, chinese academy of sciences, Urumqi 8{2.011, China Open Laboratory of Ice-Core, Cold and Arid Regions Environmental and Engineering {2. institute, chinese academy ofsciences, lanzhou 73.000, China Xinjiang institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China Open Laboratory of Ice-Core Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China

The research on the respondence and feedback of modern sand deserts to the climate change is an important component part in the studies on the global climate change. deserts respond to the climate change, meanwhile, they affect the climate with their feedback of peculiar environment during the respondence. Many researches on desert climate have been carried out at home and abroad. However, there is little research on the respondence and feedback of modern fixed, semi-fixed and mobile deserts in arid areas to the climate change, in which the factor analysis as well as the parameter changing effects is especially the difficult problem all along. In this note, the parameters of the respondence and feedback of Gurbantunggut desert to the climate change are measured and analyzed, some variable parameters of water-heat exchange are obtained, and a numerical model of desertification is developed according to a series of climate change of about 40 years and the variable relations of meteorological and physical

关键词： Gurbantunggut desert climate change respondence and feedback numerical model.