We choose the arid land of northwestern China as our study area because of its extensive area, specific geographical location, dry climate, varied topography, vulnerable ecosystems and long-term human disturbance, as well as the existence of current conflicts between economic development and environmental protection. Based on the literature, we choose ten desert species with clear and relatively accurate geographical distribution ranges to model their distributions:Anabasis brevifolia, Atraphaxis frutescens, Calligonum mon-golicum, Ephedra przewalskii, Gymnocarpos przewalskii, Haloxylon ammodendron, Haloxylon persicum, Ka-lidium cuspidatum, Salsola laricifolia, and Sympegma regelii.

：選擇面積廣闊欧美日韩综合、地理位置特殊激情aⅴ、氣候干旱亚洲精品精品熟妇熟妇、地形地貌多樣日韩精品一线、生態(tài)系統(tǒng)脆弱以及人類活動(dòng)長期干擾，而且目前面臨著西部大開發(fā)和環(huán)境保護(hù)雙重矛盾的西北干旱區(qū)作為研究區(qū)域在线无码不卡大黄，通過收集西北干旱區(qū)多種優(yōu)勢(shì)種和常見種的地理分布資料日日精品人人在看人人在看，選取10種分布范圍相對(duì)明確国产一区久久无码、資料相對(duì)齊備的荒漠植物種：短葉假木賊、木蓼(A- traphaxis frutescens)久久99热这里只有精品7、沙拐棗91自拍视频中文字幕、膜果麻黃、裸果木免费一级a一片手机看、梭梭柴免费观看黄色国产网站、白梭梭、尖葉鹽爪爪摸人人操人人人、松葉豬毛菜(Salsola lar- icifolia)和合頭草影音av，定量分析其地理分布與氣候因子的關(guān)系，并據(jù)此估測(cè)其潛在中心分布區(qū)和潛在最大分布范圍jiujiure，與實(shí)際分布范圍進(jìn)行比較。

It accounts for more than 64% of species recorded in China. The study was the most comlplete , systematic work about birds in Yunnan and recorded the most species of birds in Yunnan at present. The recources status and geographical distribution of birds in Yunnan were deeply studied, and the characters and evolution tendency of avifauna in Yunan, geographical division of birds in Yunnan were discussed.

本項(xiàng)目通過系統(tǒng)的分類和區(qū)系研究工作欧美日韩图自拍图片在线观看，共描記云南鳥類848種(1074種和亞種)国产午夜天堂免费观看AV，占中國記錄鳥類種數(shù)的64％以上，是目前記錄云南鳥類物種最多日韩性色自拍视频网站在线播放、最全面和最系統(tǒng)的工作超碰97自慰；并在深入研究云南鳥類資源狀況和地理分布的基礎(chǔ)上，探討了云南鳥類的區(qū)系特征及其演化趨勢(shì)99re这里只有精品视频在线观看、三級(jí)地理區(qū)劃麻豆精品视频在线。

With the support of the project, the study completed the classification to passerine birds in Yunnan, summarized their habitat environment, geographical distribution; and analyzed the characters and evolution tendency of avifauna in Yunnan, geographical division of birds in Yunnan. The project was successfully completed. As production of the study, the book of "The avifauna of Yunnan China, Vol.2: passeriformes", three articles in periodical journal, two articles in national meeting proceeding and three articles in international meeting proceeding were published.

在該項(xiàng)目的支持下，通過對(duì)云南省雀形目鳥類的分類整理工作人人草av在线，以及棲息地生境XXXXWWW视频欧美、地理分布、區(qū)系組成和演化啊啊疼轻点视频、地理區(qū)劃等總結(jié)分析a视频在线，完成和出版了《云南鳥類志下卷雀形目》，發(fā)表期刊論文3篇亚洲熟妇无码一区，國內(nèi)學(xué)術(shù)會(huì)議論文2篇福利小视频，國際學(xué)術(shù)會(huì)議論文3篇。

Geographical distribution and ecological conservatism of disjunct genera of vascular plants in eastern Asia and eastern North America 1 We evaluated geographical and climate distributions of 57 vascular plant genera that have ..

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The geographical distribution of historical characters in the four dynasties in Southern Dynasty lias features as follows: although the number of the provinces of distribution is relatively approximate, the number of the characters in each province is remarkably imbalanced

南朝四代歷史人物的地域分布具有以下特點(diǎn)：雖然分布省區(qū)的數(shù)量比較接近http曰本wwwcom，但每省區(qū)擁有的人物數(shù)量卻表現(xiàn)出極大的不均衡在线视频免费91，更為突出的表現(xiàn)是：各朝的人數(shù)分布呈現(xiàn)出明顯的高聚集性特征

Based on the cognition, a method is developed to assess the retrievability of temperature and the distribution of the global retrievability with HIRS/3 and AIRS data in Jan and Jul are firstly given by using the NCEP reanalysis data. The results show that the retrievability of temperature is low in the upper and lower atmosphere, and high between 400 hPa and 850 hPa. In geographical distribution, the retrievabilities are low in the low latitude marine regions and in some regions in Antarctica, and relatively high in mid-high latitude regions and continental regions.

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On species level, the geographical distribution, and distribution and diversity centers of Aletris L. were studied and the causes for its origin and speciation as well as its modern inter—continent discontinuous distribution were explored .

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Phytogeographical distribution: Firstly,the geographical distribution map of each species are given,basing that,distribution pattern of each species in each series and that of each series in each section are discussed.

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The "yes" or "no"(1 or 0) of distribution of reptiles in Guangdong Province were regarded as two-state character. The relative coefficient was taken for the similar degree of reptiles in every two zoogeographical provinces. The cluster analysis was taken by group average method. The characteristics of geographical distribution and the comparison between the result of cluster analysis and the geographical distribution of reptiles in Guangdong Province are discussed.

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The development of the regional forestry industry was uneven.(2)The geographical distribution of China's forest industry and Forest resources was uneven during 1998-2007.The degree of the uneven geographical distribution of the primary industry of China's forestry industry and forest resources was de

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