地区

It is relatively higher in the northwest and middle parts and lower in the southwest and east parts.

这是相对较高的西北地区和中东地区和较低的西南和东部地区。

The main study areas are as follows: 1 The landscape classification system of the urban-rural ecotone is set up based on the studying on land-use type of urban area and rural area, and then it is used to establish a regional landscape data warehouse for deposition, modification and management; 2 A group of landscape structure and pattern indices and patch area spectrum analysis methods are used to describe the structural and heterogeneous characters of all the landscape elements from different aspects; 3 The temporal and spatial difference of the landscape pattern of main road belts of the research area are also analyzed with the same method. Their basic process and regularity of urban axial expanding of the southwestward of Shanghai City are initially knewn well; 4 According to the traits of the ecotone, the principles and basis of vegetation classification, the ecotone vegetation classification system is set up, its species constitute, community patch characters, the relationship between vegetation types and landscape categories are analyzed, meanwhile, the vegetation sample maps are made; 5 Based on above studies, some landscape ecological stratedies within the research area were discussed. The following are the results of this study

城乡交错带地区的景观分类，在对城市地区和农村地区的土地利用类型研究的基础上建立了城乡交错带的分类体系，并在此基础上用ARC＼INFO软件分时段、分区、分要素建立研究区的景观图形数据库，对数据进行存储、修改和管理；2）利用多种景观结构、格局指数和斑块面积谱分析方法，从不同的侧面对各种景观组分的结构以及区域的景观格局特征进行了分析，并对其成因进行了探讨；3）利用相同的分析方法，分析了城乡交错带中的城市干道两侧的景观格局特征的空间和时间分异情况，初步掌握上海城市西南轴向扩张的基本过程和规律；4）对城乡交错带中非独立的景观要素-植被，研究其遥感图象信息的基本特征，建立适合区域特点的植被分类体系，并在样区中建立了植被图形数据库和计算机制图，分析了植被景观种类组成、斑块等级等特征以及与不同景观的相互关系；5）在上述研究的基础上，对研究区内的景观生态对策进行了研究。

A great diversity of land cover types is present in urban areas. This diversity makes urban areas spatially and spectrally heterogeneous, and in turn makes urban environmental modeling challenging.

都市地区的土地覆盖物是多样的，这使得都市地区在空间上及光谱上非常的异质化，也使得都市地区的环境模式化非常困难。

The influence of environmental variables on distribution of PAHs(1) The concentrations of PAHs were higher in warm temperate zone and subtropical zonethan in low temperature zone;(2) The concentration in plain, hilly land and Ya\'an mountainousregion were higher than in other places;(3) The concentration in paddy fields, dry land andforests were higher than in artificial land and grass;(4) There was positive correlation betweenthe concentration of PAHs and TOC. The correlation was more obvious for 4-rings PAHs thanfor 5-, 6-rings PAHs;(5) The concentration of PAHs in acid soils was higher than in alkali andneutral soils;(6) The concentrations in conifer and spinney forest were higher than inbroad-leaved forest.Part two: The temporal and spatial distribution characteristics of POPs at Basin-MountainTransect.

环境因素对多环芳烃分布的影响(1)温带和亚热带地区土壤多环芳烃含量高于低温地区土壤中多环芳烃含量；(2)在平原、匠陵和雅安市附近的山区多环芳烃含量高于其他地区含量：(3)水田、旱地和林地多环芳烃含量高于建筑用地和草地中含量；(4)多环芳烃含量和土壤总有机碳含量成正比，四环多环芳烃与总有机碳的相关性高于其他多环芳烃的相关性；(5)酸性土壤中多环芳烃含量高于碱性和中性土壤中含量；(6)针叶林和灌木林多环芳烃含量高于阔叶林中的含量。

Spores,the structure of leaf epidermis,the transverse section of stipes,the rhizome scales and the venation patterns were selected for study.Several of these characteristics were studied in detail for this group for the first time.Morphologically and phytogeographically,the phy...

结果表明，在该亚科植物类群中，主要分布于亚洲亚热带地区的篦齿蕨属、拟水龙骨属和水龙骨属的亲缘关系较近，而主要分布于亚洲热带地区的棱脉蕨属和亚洲温带地区的多足蕨属的系统位置则分别较孤立。

Mainly belonged to Loranthaceae. Plants of Phacellaria Benth. and their hosts were mainly distributed in tropical and subtropical area. Plants of Phacellaria Benth. maybe originated in tropical area in the south of China before Tertiary. Their ancestors were parasitic on ancestors of some plants of Loranthaceae by chance during Tertiary. It took them millions of years to form a sturdy relationship between parasites and hosts. Ph. rigidula was a hemi-parasitic subshrub. In area observed, its host was mainly Taxillus caloreas var. fargesii.

的硬序重寄生(Ph.rigidula)及其寄主植物做为研究植物与植物间协同进化的材料，对重寄生属植物的起源、与其寄主的分布、硬序重寄生的形态学特性、解剖学以及化学成分进行了研究，结果表明：重寄生属植物主要寄生在桑寄生科植物上，分布区与其寄主的基本一致，均主要分布在东南亚和中国南部的热带与亚热带地区；重寄生属植物可能起源于第三纪之前某一时期的华南热带地区，随后向周边地区扩散。

The GPI method assumes that the cloud with brightness temperature below 235K would be rainy, then the area of rain is equal to the coverage of cold cloud below 235K. It may be suitable for most part of China at tropic and subtropic area. But for northern part and plateau area of China, the GPI overestimates precipitation due to lack of enough water vapor.

4GPI方法假定云顶亮温低于235K时，将产生降水，降水区的面积就等于低于235K亮温覆盖的区域，这在热带和中纬度大部分地区可能是适用的，但对我国北方干旱地区以及高原地区，则存在明显的高估，表明有云不一定会有雨，为了修正西北部降水的系统性高估，引入相对湿度修正因子，即在一定温度条件下，加上一定的湿度条件，才能形成降水。

S. hexandrum is a shade-tolerant species between sun plant and shade plant, but their shade-tolerance is different among individuals from each region: S. hexandrum from the middle and the south areas are supposed to be suitable to grow in shady areas, the northern individuals are more adaptive to grow in the better light conditions.

桃儿七是一种介于阳生和阴生植物之间的耐阴植物，但不同地区的个体耐阴性也不太相同，中部和南部地区的桃儿七应该更适合在较为阴蔽的地段生长，而北部地区的则更适于生活在光照状况较好的环境中。

Secondly, the design strategies, which can give attention to two or more things about summer-hot and winter-cold, of several key factors, such as the sunward, the form , the space and the skin were collated on the base of the former research and experiments with the writer's thoughts and analysis on the potential and the problems which the solar energy utility is facing, However, architecture is not the simple combination of accessories, but the integration of art and technology.

接着，通过对夏热冬冷地区利用太阳能的问题与潜力的分析和思考，总结前人工作、研究的实践，结合本人专业学习、专业实践和实地调研，对夏热冬冷地区多层住宅的朝向、体型、空间、表皮等住宅设计的几个重要要素提出了同时兼顾夏季被动式降温、冬季被动式采暖的设计策略，试图以变化的、科学的、切实可行的设计手法满足夏热冬冷地区多层住宅节能的需求。

The author thinks that in the east economic area,the industrial structure supererogation has distinct efficiency of technological progress;in the mid economic area,the development of secondary industry has relatively strong effect on economy scale;in the west economic area,the transferring of rural surplus-labor can effectively enlarge the economic scale.

文章认为东部地区在现阶段，产业结构的高度化具有明显的技术进步的效率，应加快高新技术产业发展的步伐；中部地区应强调第二产业，特别是工业的发展，工业的发展在现阶段具有较强的规模效应；西部地区农村剩余劳动力的转移，能够有效地扩大经济总规模。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。