地理分布

Speciation of the three species of Calocedrus studied was evidently shaped by geohistorical vicariant events, mainly allopatric fragmentations.

而历史上的不连续分布的地理事件为造成本研究所选取的三个物种异域种化的机制。

Through annalistic GIS technique of subassembly and comparison to WebGIS and VC , we decide to adopt VC based on geographical information system of enterprise distribution that was projected for second times.

通过对组件式GIS技术的分析，还比较了WebGIS和VC 等技术，我们决定选用VC 基于进行GIS的开发企业分布地理信息系统。

In this paper, the distribution, type and geographically epidemic character of arsenism in China were reported.

本文报道我国地方性砷中毒病区的分布、类型和地理流行病学特征。

Thinking the difference between these culture types not only in culture characters, selected materials of stone, size, artifactitious technology, and stone type, but also in time and space, distributing of physiognomy, relative height, geography location, and time scope etc.

认为三者不仅在文化特征如石制品的选料、尺寸，加工技法和器型种类等方面有明显区别；在时空上、分布的地貌部位、相对高度和地理位置、时间范围等也存在明显差别，有很强的规律性。

Ecological environment factors affecting its growth and development and the spatial distribution characteristics of plant autoeciousness of Hemiberlesia pitysophila were comprehensively analyzed by combining Maxent ecological niche models with geographical information system technique in this paper.The relatively exactly potential distribution region of Hemiberlesia pitysophila in whole Chi...

本文选用Maxent生态位模型与地理信息系统相结合，综合分析影响松突圆蚧生长发育的环境因素，结合寄主分布特征，非常直观定量地获得了松突圆蚧在我国的潜在发生区，计算结果经ROC曲线分析法验证，Maxent生态位模型的AUC值为0.991(非常接近于1)，表明预测获得了较好的效果，研究可为松突圆蚧的检疫及防治决策的制定提供科学依据。

The analysis results of species in avifaunal subregions of China by cluster method and PAE method were basically consistent, which supported two realms (palaearctic realm and oriental realm) of zoogeographical region divided by the line of Qinling Mountains.

用聚类方法和PAE方法对鸟类亚区分布格局的分析结果基本一致，都支持我国鸟类动物地理区系归属于古北界和东洋界，两界以喜马拉雅山脉和秦岭山脉一带构成两界的分界线。

Biogeographical region A subdivision of the Earth ' s surface based on the particular species of plants and animals present.

生物地理区：特定动植物物种在地球表面的分布区域。

Based on the definition of desertification from the United Nations Convention to Combat Desertification,the potential extent of desertification in China was revised by employing Thornthweite＇s and Penman＇s formulae to calculate humidity index using the records of 671 meteorological stations from 1950 to 1990,and the biogeographical features of the climate types were clarified.

为了客观反映中国荒漠化发生区域，按照联合国防治荒漠化《公约》的定义，利用1950—1990年间全国671个气象站的长时间序列气象数据，分别采用Thornthwaite和Penman计算可能蒸散量的方法计算了湿润指数的分布，然后根据中国气候区划和中国植被区划以及中国荒漠化发生的特点等对计算结果进行了调整，对中国荒漠化潜在发生范围进行了修订，明确了荒漠化各气候类型区的地理涵义。

Based on the above research, the article discusses the process using ASP and ADO technique to manage and update database; studies the setting of purview to assure the security of system; discusses the function of layercontrol, eagle-eye navigation, search of information and etc.; discusses the function of statistic and analysis by the process doing the caky statistic chart of roadbed disease; analyzes the doing of distributing special map of disease and engineering with the character of rail-track engineering GIS.

在以上总体研究的基础上，讨论了利用ASP和ADO技术管理和更新远程铁路工务数据库的实现过程；为了保证系统使用的安全性，研究了对用户使用权限的设置；讨论了图层控制、鹰眼导航等地图操作功能以及信息查询功能的实现过程；以路基病害分析的饼状统计图的制作过程为例讨论了统计分析的功能；针对铁路工务地理信息系统的特点，分析了病害和维修工程分布专题图的制作。

Spatial autocorrelation and semi-variance analysis of GeoStatistics were used to study the patch scale structure of red deer (Cervus elaphus xanthopygus Milne-edwards)habitat factors during winter, and the relationship between patch scale structure and red deer distribution was revealed.

应用地理统计学的空间自相关分析和半方差分析技术，研究黑龙江省完达山地区冬季马鹿生境破碎化因子的斑块尺度结构，揭示了马鹿数量分布与生境因子斑块结构之间的内在关系。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。