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research progress of desert science in{2.

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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 83.011, 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{2. began in the 193.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{2.

关键词： research progress of desert science in{2.

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 83.011, china Open Laboratory of Ice-Core, Cold and Arid Regions Environmental and Engineering {2. Institute, {3. 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.

Temperature and precipitation trends in Minqin desert during the period of 1961-2.07

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Journal of Arid Land 2011年第3期3卷 214-219页

作者： ShuJuan ZHU1,2.3.ZhaoFeng CHANG1,2.3.1 Gansu Minqin National Field Observation & research Station on Ecosystem of {3.ified Rangeland,Minqin 73.3.0,{2. 2.Key Laboratory of {3.ification Combating of Gansu Province,lanzhou 73.070,{2. 3.Gansu {3. Control research Institute,lanzhou 73.070,{2. Gansu Minqin National Field Observation and research Station on Ecosystem of desertified Rangeland Minqin 733300 China Key Laboratory of desertification Combating of Gansu Province Lanzhou 733070 China Gansu desert Control research Institute Lanzhou 733070 China

This paper analyzed the data of temperature and precipitation in Minqin,typical desert area in north-west china,during the period of 1961 2.07 by linear *** result indicated that the increasing rate of the mean annual temperature in Minqin was higher than that of the average of china;and the temperature in February increased by 3.01oC averagely in the past 47 *** climate in Minqin displayed an evident warming ***,there was no evidently increasing trend of precipitation in the past 47 years,and drought occurred during the whole growing season.

关键词： temperature precipitation global climate Minqin

Preliminary reconstruction of the desert and sandy land distributions in china since the last interglacial period

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Science china Earth sciences 2004年第Z1期47卷 89-100页

作者： CHEN Huizhong, SU Zhizhu, YANG Ping & DONG GuangrongKey Laboratory of desert and desertification, Cold and Arid Regions Environmental and Engineering {2. Institute,{3., lanzhou 73.000, china State Key Laboratory of Loess Quaternary Geology, Institute of Earth Environment,{3., Xi’an 710075, china Institute of Loess Plateau, Shanxi University, Taiyuan 03.006, china Key Laboratory of desert and desertification Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou China State Key Laboratory of Loess Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Xi’an China Institute of Loess Plateau Shanxi University Taiyuan China

The desert and sandy land are the products of arid climate. The spatial distribution of modern deserts and sandy land in{2. and their relation to climate show following characteristics: arid and hyper-arid desert zones, at isohyet of less than 2.0 mm, are dominated by mobile dunes; semi-arid steppe and arid desert steppe with the precipitation between 2.0?00 mm, are dominated by semi-fixed and fixed sand dunes; the precipitation of sub-humid forest grassland and humid forest zones with scattered fixed sand land is higher than 400 mm. With this as reference, in combination with considerable amount of paleoclimatic data in desert regions and adjacent regions, the distributions of desert and sandy land in{2. during the last intergla-cial period, the last glacial maximum (LGM), and the Holocene megathermal, were preliminarily reconstructed. The results compared with that of today show that the distribution of desert and sandy land in{2. was greatly dwindled during last interglacial period, and the mobile dune area was about two-thirds of that of today's, but greatly expanded during LGM. However, the dwindling area of desert and sandy land in the Holocene megathermal was smaller than that in the last interglacial period. The forcing mechanism was mainly related to the changes of East Asian winter and summer monsoon, south-northward swing of the westerlies and the variations of the Qinghai-Tibet Plateau monsoon intensity caused by global climate changes during the cold and warm intervals since the last interglacial period.

关键词： the glacial-interglacial period, desert, sandy land, spatial distribution.

Remote sensing based shrub above-ground biomass and carbon storage mapping in Mu Us desert,china

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Science china(Technological sciences) 2010年第S1期53卷 176-183页

作者： XU Min 1,2.CAO ChunXiang 1,TONG QingXi 1,LI ZengYuan 3.ZHANG Hao 1,HE QiSheng 1,2.GAO MengXu 1,2.ZHAO Jian 1,2.ZHENG Sheng 1,2.CHEN Wei 1,2.& ZHENG LanFen 1 1State Key Laboratory of Remote Sensing Science,Jointly Sponsored by the Institute of Remote Sensing Applications of chinese academy of sciences and Beijing Normal University,Beijing 100101,china 2.Graduate School of the chinese academy of sciences,Beijing 100049,china 3.research Institute of Forest Resources and Information Techniques,chinese {13. of Forestry,Beijing 10009,china State Key Laboratory of Remote Sensing Science Jointly Sponsored by the Institute of Remote Sensing Applications of Chinese Academy of Sciences and Beijing Normal University Beijing China Graduate School of the chinese academy of sciences Beijing China research Institute of Forest Resources and Information Techniques Chinese Academy of Forestry Beijing China

The estimation of above-ground biomass(AGB) and carbon storage is very important for arid and semi-arid ***-1A/B satellite data combined with field measurement data was used for the estimation of shrub AGB and carbon storage in the Mu Us desert,*** correlations of shrub AGB and spectral reflectance of four bands as well as their combined vegetation indexes were respectively analyzed and stepwise regression analysis was employed to establish AGB prediction *** prediction equation based on ratio vegetation index(RVI)was proved to be more suitable for shrub AGB estimation in the Mu Us desert than *** AGB and carbon storage were mapped using the RVI based prediction model in *** statistics showed the western Mu Us desert has relatively high AGB and carbon storage,and that the gross shrub carton storage in Mu Us desert reaches 16 799 2.0 t,which has greatly contributed to the carbon fixation in northern china.

关键词： above-ground biomass carbon storage Mu Us desert HJ-1A/B remote sensing

Climate instability in the Yili region, Xinjiang during the last glaciation

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chinese Science Bulletin 2000年第17期45卷 1604-1609页

作者： YE Wei, DONG Guangrong, YUAN Yujiang & MA Yingjie1. Xinjiang Institute of Ecology and Geography, chinese academy of sciences, Urumqi 83.011, china 2. Department of Geography, Zhejiang Normal University, Jinhua 3.2}004, china 3. Institute of desert research, chinese academy of sciences, lanzhou 73.000, china 4. Xinjiang Institute of Meteorological research, Urumqi 83.002. china Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi China Department of Geography Zhejiang Normal University Jinhua China Institute of desert research Chinese Academy of Sciences Lanzhou China Xinjiang Institute of Meteorological research Urumqi China

The climate is influenced by westerlies year in year out and the aeolian loess is widespread in the Yili region, the Xinjiang Uygur Autonomous Region. Through the study of the loess section with a thickness of 2..5 m, much useful information about climatic change in this region during the last glaciation was gotten. Grain size analysis of loess samples in the section showed that the climatic change in the Yili region was of instability during the last glaciation and similar to those of the North Atlantic Ocean and Greenland. In correspondence with the Heinrich events, the percentage of the size fraction of loess with grain size less than 10 μm decreased in cold stadials in the Yili region. This result suggests that the westerly wind be strengthened during the cold periods. Compared with the stadials, the content of the loess with grain size less than 10 μm was increased in interstadials, which indicated that the strength of the westerly wind was weakened. It is obvious that the climate was instable

关键词： Yili region last glaciation climate instability.

Arbuscular mycorrhizal fungi infection in desert riparian forest and its environmental implications: A case study in the lower reach of Tarim River

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Progress in Natural Science:Materials International 2008年第8期18卷 983-991页

作者： Yuhai Yang, Yaning Chen *, Weihong Li Key Laboratory of Oasis Ecology and desert Environment, Xinjiang Institute of Ecology and Geography, chinese academy of sciences, Urumqi 83.011,{2. Key Laboratory of Oasis Ecology and desert Environment Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China

This study was conducted on the desert riparian forest along the lower reach of the inland Tarim River, which is located in the arid region of Northwest *** plant species in 10 families were collected from five monitoring sections,and examined for the infection of arbuscular mycorrhizal fungi (AMF). The impact of different soil factors on AMF infection rate and intensity was compared using the principal component analysis (PCA) method. The results indicate that 11 species are AM and only 4 are non-AM plants. The estimated capacity of AMF infection depends on families of plants and also the parameters (infection rate, infection intensity, fungal spore density) used. The density of fungal spores was relatively higher in Phragmites communis and Populus euphratica in Graminaceae and Salicaceae families, *** infection rate was above 50%in all the AM plants,except Calligonum *** highest infection rate appeared in Alhagi sparsifolia (97%) and Glycyrrhiza inflata (92.). However, when compared by AMF infection intensity, Tamarix spp. became the top one, followed by Alhagi sparsifolia, and Glycyrrhiza inflata was in the middle range of all the species. The PCA has identified that soil total salt, moisture, organic matter, total nitrogen, total P, available K and pH were closely associated with the AMF infection.

关键词： Arbuscular mycorrhiza Infection Ecological restoration desert riparian forest Soil

Landscape evolution and precipitation changes in the Badain Jaran desert during the last 3. 000 years

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chinese Science Bulletin 2000年第11期45卷 1042-1047页

作者： YANG XiaopingInstitute of Geology and Geophysics, chinese academy of sciences, Beijing 10002., china Institute of Geology and Geophysics Chinese Academy of Sciences Beijing China

On the basis of field expeditions into different parts of the Badain Jaran desert, new evidence of landscape evolution and precipitation changes during the last 3. 000 years has been found from the geomorphological, sedimentological and geochronological studies of the megadune. Different cemented surfaces of palaeo-dunes have been observed in many localities, which are representatives of relatively moister environment. The chronological data show that four periods of more humid environment occurred in the past 3. 000 years. The stabilization of dunes in a large scale and the existence of many palaeo-lakes and lacustrine terraces confirm the periodic fluctuations of climate. It implies that the intensity of westerlies and Eastasian monsoons varied in the region of Alashan, and the periods of higher precipitation took place even in the times close to the last glacial maximum.

关键词： desert palaeo-dune lake global change Badain Jaran.

Responses of distribution pattern of desert riparian forests to hydrologic process in Ejina oasis

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Science china Earth sciences 2004年第Z1期47卷 21-31页

作者： ZHAO Wenzhi, CHANG Xueli & HE ZhibinLinze Inland River Basin Comprehensive research Station, Cold and Arid Regions Environmental and Engineering research Institute,{2.,{3., china Yantai Normal University, Yantai 2.4005, china Linze Inland River Basin Comprehensive research Station Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou China Yantai Normal University Yantai China

By using the theories and methods of landscape ecology and the technology of GIS and RS, a study has been carried out on the responses of distribution pattern of desert riparian forest to hydrologic process on the basis of the hydrologic data from 1990 to 2.00 and the TM image of 2.01 year. The results showed that: (1) there appears an even distribution pattern for the relative forest area in oasis, however, the degenerated forest diaplays an increasing tendency from west to east; (2. the desert riparian forest in Ejina is in completely degenerated process at the patch scale; (3. the number of patch is influenced not only by hydrologic process,but also by agricultural activity such as cultivation. The severe deterioration of the degraded vegetation in whole oasis initiates from lower reaches, and gradually impels to upstream; the fragmentation of landscape in the terminal site is more obvious, which is influenced by river shape and decreasing flux of water. It is found that the influence of surface hydrologic process to the ground hydrologic process of desert riparian forest in Ejina oasis is little for the recent ten years. The relative area of the degenerated forest increased with increasing ground water depth in the direction of parallel to river channel. On the contrary, in the direction perpendicular to river channel, there is a decreasing tendency for the average patch area of the forest and the degenerated forest with increasing ground water depth.

关键词： Ejina oasis, desert riparian forests, vegetation pattern, hydrologic process.