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A family net of giant pandas in the Tangjiahe Natural Reserve:Assessment of current individual migration

Science Bulletin 2005年第17期 65-72页

作者： WAN Qiuhong1, FANG Shengguo1, LI Jianguo2. ZHANG Liming 3, OU Weifu4, XIAN Fanghai4 & CHEN Wanli4 1. College of Life Sciences, State Conservation Center for Gene Re-sources of Endangered Wildlife, and Key Laboratory of Conservation Genetics and Reproductive Biology for Endangered Wild Animals of Ministry of Education, Zhejiang University, Hangzhou 31002., china 2. forestry department of sichuan province,{2., china 3. sichuan Bureau for Wildlife Resource Investigation, Conservation and Management, chengdu 610082. china 4. Tangjiahe Natural Reserve, Qingchuan 62.109, china

In the present study, formalin-fixed feces, oli-gonucleotide fingerprinting and SRY-gene based sexing were used to construct a family net for giant pandas in the Tang-jiahe Natural Reserve and to assess contemporary gene flow (migration) in this population. A total of 12. fecal samples were attributed to 37 individuals (2. females and 15 males) that were then analyzed for family relationships. Based on DNA fingerprints, the deduced family net revealed the fol-lowing facts: (i) First-order relatives possessed similarities from 50% to 90%, and similarities between unrelated indi-viduals or distant relatives were as high as 77%, indicating that the Tangjiahe pandas are characterized by high genetic similarity; (ii) 15 matings were identified and 5 ones oc-curred between close relatives, implying that there is poten-tial for inbreeding to impact the pandas; (iii) four mating pairs and 5 offspring presented long distance migrations, demonstrating the intra-reserve habitat is continuous; (iv) four pairs of full sibs (also female-male dyads) dispersed short distance and all of them gave birth to highly inbred offspring, reflecting long distance migration is vital for in-breeding avoidance; (v) 17 adult individuals dispersed short or moderate distance and formed three clusters on the land-scape, indicating that it is necessary to find out whether there is a negative factor impacting the pandas.

关键词： multilocus DNA fingerprinting giant panda family rela-tionship close inbreeding dispersal pattern.

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Research on evolution and prevention of the No.1 large-scale dangerous slope of Erlang Mountain on the sichuan-Tibet Highway

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Science china(Technological Sciences) 2003年第z1期46卷 42-51页

作者： ZHANG Xiaoyan The Transportation department of sichuan {2., chengdu 610041, china Transportat Dept sichuan Prov Chengdu 610041 Peoples R China

sichuan-Tibet Highway traverses the two principal geomorphic units and their transition belt in western china; it has some hazardous slopes characterized by high altitude and chilliness, high elevation, large scale and complexity. Various hazards usually concur in groups. The integrated hazards of these slopes cannot be reflected by any single hazardl they act on one another and develop at the same time, like many other things experiencing a recurrent evolving course from growth to demise. Based on the mechanisms of the typical dangerous No.1 slope of Erlang Mountain on the sichuan-Tibet Highway, various simulations through geotechnical test, numerical calculation, and in-situ monitoring have been carried out to control and regularize the last phase of evolution of the slope. The text shows that such slopes have developed under geological and engineering conditions that might have enforced the potentiality of hazards; interactions between different hazards are of more menace than any single factor; structures in cooperation with the hazardous bodies may be effective for preventing such calamities.

关键词： hazards of large slope evolution, hazards concurring in group, structure control.

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Monitoring the Cultivated Slope Land in the Three Gorges Reservoir Area Based on Remote Sensing and GIS

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Wuhan University Journal of Natural Sciences 2006年第4期11卷 915-921页

作者： ZHOU Jieming1, ZHOU Qigang 2. 3 ,HUANG Zhiqin 2. 3, 4 1. The Faculty of Geography and Resources Science, sichuan Normal University, chengdu 610066, sichuan, china 2. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, chengdu 610041, sichuan, china 3. Graduate University of the Chinese Academy of Sciences, Beijing 100049, china 4. Information Center of Land and Resources department of sichuan province, chengdu 610041, sichuan, china The Faculty of Geography Resources Science Sichuan Normal University 610066 Chengdu Sichuan China Institute of Mountain Hazards Environment Chinese Academy of Sciences 610041 Chengdu Sichuan China Graduate University of the Chinese Academy of Sciences 100049 Beijing China Information Center of Land Resources department of sichuan {2. 610041 Chengdu Sichuan China

By means of combining auto-extraction with manual interpretation, the current distribution information about cultivated land is obtained. The distribution information of 1992.is extracted from the dynamic polygons of 2.02. The monitoring mini-system of the cultivated slope land is established. In the system, detailed surveys, focused on the resources of cultivated slope land, are carried out. The results indicate that the area of the cultivated slope land is very large. Meanwhile, there are lots of cultivated steep slopes with gradient above 35°. The areas of steep land cultivated had been slowly reduced from 1992.to 2.02. At the same time, the pressures of returning farm land to forestry are great in all counties. The conflicts between population growth, insufficient grain supply and stagnant economic development sharpen increasingly. It is inevitable to improve the agricultural structure.

关键词： slope land cultivated remote sensing geography information system (GIS) the pressure of returning farm land to forestry Three Gorges Reservoir Area

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Direct in vivo injection of ^(131)I-GMS and its distribution and excretion in rabbit

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World Journal of Gastroenterology 2010年第17期16卷 2120-2128页

作者： Yu Ma,Yi Wan,Li-Geng Duan,Xiao-Li Chen,The Research Unit of Hepato-Bilio-Pancreatology and department of Hepatic Surgery,West china Hospital of {2. University,chengdu 610041,{2. province,china Dong-Hui Luo,Chuan-Qin Xia,College of Chemistry,{2. University,chengdu 610041,{2. province,china Lin Li,department of Nuclear Medicine and The National Key Discipline of Medical Imaging and Nuclear Medicine,West china Hospital of {2. University,chengdu 610041,{2. province,china The Research Unit of Hepato-Bilio-Pancreatology and department of Hepatic Surgery West China Hospital of Sichuan University Chengdu 610041 Sichuan Province China. zean_z@***

AIM: To explore the distribution and metabolism of 131 I-gelatin microspheres ( 131 I-GMSs) in rabbits after direct injection into rabbits’ ***: Twenty-eight healthy New Zealand rabbits were divided into seven groups,with four rabbits per *** rabbit’s hepatic lobes were directly injected with 41.336 ± 5.106 MBq 131 *** day after 131 I-GMSs administration,4 rabbits were randomly selected,and 2.0 μL of serum was collected for γ *** and thyroid functions were tested on days 1,4,8,16,2.,32.48 and 64 after 131 I-GMSs ***-photon emission computed tomography (SPECT) was taken for each group on days 0,1,4,8,16,2.,32.48,64 after 131 I-GMSs administration.A group of rabbits were sacrificed respectively on days 1,4,16,2.,32.48,64 after 131 I-GMSs *** livers were taken out for histological ***: After 131 I-GMSs administration,the nuclide was collected in the hepatic area with *** radiation could be detected on day 48 after 131 IGMSs administration,and radiography could be seen in thyroid areas in SPECT on days 4,8,16 and *** day after 131 I-GMSs administration,the liver function was damaged but recovered 4 d *** days after 131 I-GMSs administration,the levels of free triiodothyronine and free thyroxin were reduced,which restored to normal levels on day *** examination showed that the microspheres were degraded to different degrees at 2.,32.and 48 d after 131 I-GMSs *** surrounding parts of injection points were in fibrous *** microspheres were detected in histological examination on day 64 after 131 I-GMSs ***: Direct in vivo injection of 131 I-GMSs is safe in *** may be a promising method for treatment of malignant tumors.

关键词： 131 I Label Gelatin microspheres Animal Rabbit Hepatic Direct injection

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Studies on Barriers for Promotion of Clean Technology in SMEs of china

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Chinese Journal of Population,Resources and Environment 2005年第1期3卷 9-17页

作者： Peng Sizhen , Liu Yan , Shi Han 1 2.& Zhong Ping 3 1. The Administrative Centre for china’s Agenda2., Beijing 100089, china 2. Yale School of {2. & Environmental Studies, New Haven CT 06511, the U.S.A. 3. department of Environmental Science and Engineering, sichuan University, chengdu sichuan 610065, china The Administrative Centre for china’s Agenda2. Beijing 100089 China Yale School of forestry and Environmental Studies New Haven CT 06511 United States department of Environmental Science and Engineering Sichuan University Chengdu Sichuan 610065 China

After more than 10 years efforts on awareness raising and promotion, the concept of cleaner production (CP) has been adopting as a strategic approach to balance economic benefits and environmental protection for china’s industries. However, it is also found that clean technology is difficult to be adopted and implemented in Chinese Small and Medium-sized Enterprises (SMEs) because of certain barriers. This paper investigates these barriers among three stakeholders--governments, enterprises and experts. The Analytic Hierarchy Process (AHP) was employed to prioritize the relative importance of the twenty fine-selected barriers, which were classified into four barrier categories. The findings reveal that the exterior barriers of policy and financial barriers should be stressed rather than the inner barriers of technical and managerial barriers, although they are also very important. Absence of incentives on economic policies, lax enforcement of environmental regulations and high initial capital cost were the most important barriers to adoption of Clean Technologies (CT) in china.

关键词： Cleaner Production Clean Technologies Barrier Study Small and Medium Enterprises

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New discovery on dinosaur fossils from Early Jurassic, sichuan, china

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Chinese Science Bulletin 1999年第23期44卷 2182-2188页

作者： LUO Yaonan and WANG Changsheng sichuan Bureau of Exploitation and Exploration of Geology and Mineral Resources , chengdu 610081,{2. department of Three- Gorge Economics , Yuzhou University, Chongqing 400033 ,{2. sichuan Bureau of Exploitation and Exploration of Geology and Mineral Resources Chengdu China Departmenf of Three-Gorge Economics Yuzhou University Chongqing China

An early and primitive sauropod dinosaur, Gongxianosaurus shibeiensis (gen. et sp. nov.), from Lower Jurassic Dongyuemiao Member of Ziliujing Formation in Shibei Village, Gongxian County, sichuan province,{2. is described, which is among Gongxian dinosaur fossils discovered in 1997. Except for skull incomplete, fossils were well-preserved. It has con-

关键词： Early Jurassic Dongyuemlan Memaber sauropod Gongxianosaurus shibeiensis (gen. et sp. nov.).

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Origin and controlling factors of chlorite coatings—an example from the reservoir of T_3x Group of the Baojie area,sichuan Basin,china

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Petroleum Science 2009年第4期6卷 376-382页

作者： Peng Jun1,Liu Jinku2.Wang Yan2.and Liu Jianfeng2.1 Scientific Research department,Southwest Petroleum University,chengdu,{2. 610500,china 2.Graduate School,Southwest Petroleum University,chengdu,{2. 610500,china Scientific Research department Southwest Petroleum University Chengdu Sichuan China Graduate School Southwest Petroleum University Chengdu Sichuan China

The study of the chlorite coatings always attracts scholars in china and other countries because the chlorite coatings play an important role in the preservation of residual primary pores in sandstone *** present,the study of the origin and the controlling factors is relatively *** occurrence,time of formation,genesis,controlling factors,and the mechanism of chlorite coatings inhibiting quartz overgrowths were studied in detail with thin section and SEM *** were from the sandstone reservoirs of the T3x Group in the Baojie area,the transitional zone from the middle to the south of sichuan *** results indicate that the chlorite coatings on the walls of the pore spaces are oriented perpendicular to grain surfaces in the form of isopachous(even-thickness) grain-coating,while the chlorite coatings at the contacts between adjacent detrital grains are arranged with a preferred orientation tangential to the surface of detrital *** chlorite coatings were formed in the eogenetic *** were formed by recrystallization of Fe-rich clay films during the syndepositional period,and chlorite cements would be recrystallized after the coatings’ *** formation of chlorite coatings was mainly controlled by the depositional environment,provenance conditions,and diagenetic *** presence of chlorite coatings could result in the preservation of primary pores in deeply buried sandstone reservoirs by effectively inhibiting quartz overgrowths and the development of compaction and pressure solution.

关键词： Chlorite coatings occurrence time of formation origin controlling factor quartz overgrowths T3x Group

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Two-dimensional water-filling power allocation algorithm for MIMO-OFDM systems

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Science china(Information Sciences) 2010年第6期53卷 1242-1250页

作者： JIANG YongQuan 1 , SHEN MinFen 1 & ZHOU YuanPing 2.1 department of Electronic Engineering, Shantou University, Shantou 515063, china 2.department of Electronic Engineering, sichuan University, chengdu 610064, china 1. department of Electronic Engineering Shantou University Shantou 515063 China2. Department of Electronic Engineering Sichuan University Chengdu 610064 China

Departing from the narrowband channel model, more and more researchers have recently considered the application of multiple-input multiple-output(MIMO) systems over frequency-selective fading channels in combination with the orthogonal frequency-division multiplexing(OFDM) *** this paper, we focus on the capacity of MIMO-OFDM systems and how to increase the *** has been proved that the capacity of a MIMO system with space-dimensional water-filling power allocation is greater than that of the system with uniform power *** MIMO-OFDM systems, there is an additional degree of freedom to allocate power with respect to MIMO systems:the OFDM sub-channels in *** the singular value decomposition(SVD) applied to the channel frequency response matrix, the two-dimensional water-filling power allocation algorithm for MIMO-OFDM systems is proposed based on the Lagrange method, and the corresponding capacity analysis formula is *** results show that the capacity of a MIMO-OFDM system with the proposed two-dimensional water-filling power allocation is greater than that of the system with uniform power allocation and also greater than that of the system with the one-dimensional water-filling power allocation.

关键词： MIMO-OFDM two-dimensional water-filling power allocation capacity analysis singular value decomposition(SVD)

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岷江上游干旱河谷灌丛研究

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山地学报 2007年第1期25卷 1-32页

作者：杨钦周四川省林业调查规划院四川省林业勘察设计研究院四川成都610081

岷江上游干旱河谷灌丛现代植物区系的基本特征是温带分布属占优势而含有较多的热带分布属,以及拥有许多古地中海残遗种和本地特有种,其与古地中海在时间上、与现代中亚(草原和荒漠)在空间上有着渊缘联系,热带属的种与温带荒漠、草原种... 详细信息

岷江上游干旱河谷灌丛现代植物区系的基本特征是温带分布属占优势而含有较多的热带分布属,以及拥有许多古地中海残遗种和本地特有种,其与古地中海在时间上、与现代中亚(草原和荒漠)在空间上有着渊缘联系,热带属的种与温带荒漠、草原种在此巧妙地聚集和组合是干旱河谷的特有现象,它可能是古地中海植物区系的延续和残遗的反映,在某种意义上可能是历史植物区系的'活化石'。幽深而封闭的峡谷地貌和青藏高原亚热带山地半干旱的暖温气候,以及干燥而贫瘠的山地(碱性)灰褐土是干旱河谷灌丛生境的基本特征。土壤湿度(水分相对含量)和肥力(有机质相对含量)的梯度分析,显示出半干旱-半贫瘠的土壤为其代表性的也是主要的生境类型。一种既无乔木群落(森林)又无草本群落(草原或草甸),而仅有矮灌木和半灌木占优势的灌木群落(矮灌丛),盖满了干旱河谷沿岸干燥山坡的荒凉景观,是岷江上游干旱河谷自然植被的现状概貌和基本特征。干旱河谷灌丛形成于特定的生态环境和地质历史的时空中,是一种处于森林与草原之间的而近似于草原灌丛的隐域性(非地带性或超地带性)植被。其含有的众多中亚荒漠、草原种,在干旱河谷多为中生或中生耐旱特性。因此,干旱河谷灌丛不是草原也更不是荒漠,而是中国-喜马拉雅地区夏雨性的冬旱灌丛(群系纲),它与地中海型气候的冬雨性夏旱灌丛(群系纲:如地中海的Macehia和北美洲的Chaparral等)同属于干旱(季节性)灌丛植被型的两个群系纲(Formation class)。从干旱河谷灌丛数量分析的样地相关性半矩阵中,析出的具有三角形网眼的灌丛之群系关联网(Relative net)和群系之样地关联网,显示了灌丛核心群系和群系的典型样地在关联网中的相关位置。干旱河谷灌丛沿着地质历史的长河在地貌形成与演化过程中,大约在上新世(或许更早)青藏高原尚处于夷平面发育时期,早先的干热性古植被(森林草原)中,就可能已经孕育着干旱河谷灌丛的雏型,至少与邻近的横断山区干旱河谷及中亚的荒漠、草原区(或泛、古地中海区)拥有许多共有种,继而在整个第四纪中不断发展和逐渐形成。在全新世最新的深切河谷中生存着第三纪古老植被的残遗类型和衍生后裔,是现代干旱河谷灌丛起源古老的历史性反映和植被现状的基本特征,它应该是一种原生性的植被(或顶极群落)。建立封山、禁止放牧和樵采以及保护自然植被的有效管理机制,综合开发干旱河谷自然环境中水、热优势资源的直接和间接的多种效益,是岷江上游干旱河谷保护和建设生态环境与发展区域经济的基本途径。岷江上游干旱河谷灌丛拥有十分特殊的古老植物区系和非常稀有的原始植被类型,在有限的地域内保存着古地中海植物区系的残遗成分和衍生后裔,在广阔的湿润森林地带的特定环境中生存着典型的冬旱灌丛,这些都是十分宝贵而稀有的自然遗产,对于研究我国西部的历史植物区系和自然地理,以及保护和建设现代生态环境和区域经济,都有着非常宝贵的科学价值和十分重要的现实意义。因此,特建议在岷江上游干旱河谷划出一定的面积建立自然保护区。保护地段可选设在杂谷脑河的甘堡至龙溪地区(包括主要支流的一部分河段)和岷江干流的飞虹桥至黑水河的沙坝(干旱中心)地区。

关键词：岷江上游干旱河谷植物区系植物群落冬旱灌丛草原灌丛关联网隐域植被自然保护区

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白刺属植物的川西新记录和澳大利亚间断分布途径的探讨

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山地学报 2006年第2期24卷 137-143页

作者：杨钦周四川省林业调查规划院四川省林业勘察设计研究院四川成都610081

四川西部干旱河谷新记录两种白刺属植物（柴达木白刺和西伯利亚白刺）,从它们的地理分布可以反射出干旱河谷现代植物区系起源古老,具有历史植物区系“活化石”意义,该区系与古地中海在时间上、与现代中亚（草原和荒漠）在空间上有着渊... 详细信息

四川西部干旱河谷新记录两种白刺属植物（柴达木白刺和西伯利亚白刺）,从它们的地理分布可以反射出干旱河谷现代植物区系起源古老,具有历史植物区系“活化石”意义,该区系与古地中海在时间上、与现代中亚（草原和荒漠）在空间上有着渊源联系。这两种白刺在川西是中生而不是旱生植物,生于干旱河谷灌丛（近似于中亚草原灌丛）而不是草原或荒漠中。根据植物地理学和地质学研究的一些例证,探讨了远离白刺属发生地和分布中心的比拉底白刺（或其祖型）,从非洲北部-阿拉伯地区经由印度和缅甸至马来西亚直达澳大利亚形成现代洲际间断分布的迁移途径。

关键词：白刺属四川西部新记录中生植物干旱河谷澳大利亚间断分布迁移途径

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