生态层

At last,We carry out stability asssessment about the vegetation in virtue of the model builded in this plot.We calculate the vegetation's ecological water requirement on May 2004: canopy of Robinia pseudoacacia L require 5.2mm, Top of Melilotus albus Desr require 32.2mm, Bottome of Melilotus albus Desr require 8.6mm, Layer of soil require 17.6mm, totalize 63.6mm,Which more 22.33 mm than the contemporaneous rainfull 41.27mm.

最后通过本次研究构建的模型对项目区植被进行了稳定性评价，计算出2004年5月份复合植被的生态需水量，分别为刺槐冠层5.2mm，草木樨上层32.2mm，草木樨下层8.6mm，土壤蒸发17.6mm，总计63.6mm，这个结果比当月的多年平均(1980-2002年)降雨量41.27mm多出了22.33mm.6月初白花草木樨收割以后，次生茬生长缓慢，我们假设草木樨没有被收割，分别计算了6月和7月的生态需水量，6月份生态需水为85.64mm，7月份为78.41mm，发现6月份水分亏缺依然严重，7月份降雨完全可以满足复合植被的蒸散需求。

The formation of the predomination bacteria indicate the mature of the filter which have better removal ability for iron and manganese in groundwater, and fine ecological stability.

具有Fe〓、Mn〓氧化能力细菌生态优势的形成预示着滤层的成熟，成熟的生物滤层对地下水中的铁和锰同时具有较强的去除能力，并且具有很好的生态稳定性。

The CO2 uptake rate of plants is affected by the plant species and environmental conditions such as photosynthetically active radiation, temperature, water and nutrient contents. PAR is the most immediate environmental control on photosynthesis while air temperature affects both photorespiration and dark respiration. In the natural condition, PAR and temperature play an important role in net CO2 uptake. The effects of PAR and air temperature on the CO2 uptake of Pterocarpus macrocarpus grown in a natural habitat were studied in the present work. Due to many uncontrollable factors, a simple rectangular hyperbola could not represent the measured data. The data were divided into groups of 2℃ intervals; CO2 uptake in each group may then be related to PAR by a rectangular hyperbola function. Using the obtained functions, the effect of PAR was removed from the original data.

用涡度相关法对亚热带红壤丘陵区人工针叶林的二氧化碳、水、热通量进行了观测，重点分析了23m、39m两层高度的观测结果，同时把观测期分为春季和冬季两个不同时间段作了对比：结果表明，不管冬季还是春季，39m高度所测的总通量值和夜间通量值都要小于23m的观测值，这种通量差别表明：23m高度的观测结果更接近当地生态系统与大气之间的通量交换值，在此种生态类型条件下用涡度相关法测碳通量时，在23m、39m两层高度之间仍然存在大气平流现象；该试验区植被在冬季仍然可以进行光合作用，而且光合作用所吸收的CO2大于呼吸作用所排放的CO2，因此该种生态系统在冬季仍表现为碳汇；春季的碳通量值为冬季的2倍以上。

The sixth part: Studies on the dynamic changes of soil retention function value of ecosystem in YUYANG District. Utilized ERDAS8. 5 to interpret the remote sensing image and get LUCC data and vegetation information of YUYANG District. Utilized R2V5. 5 to digitize administrative map, topographic map, vegetation picture, soil distribution map and meteorological website map. Utilized ARCINFOR8. 3 to change every digitization layer to the same projection, to generate Tyson polygon, to structure DEM and do vector polygon overlay. Utilized ARC VIE W3. 3 to obtain the grid data topographic slope and slope length from DEM data of YUYANG District, and then, turned every coverage layer into grid layer and do grid polygon overlay to gain data about dynamic changes of value of soil retention of ecosystem in YUYANG District, at last, the author analyzed the features of the spatial-temporal changes and its reason.The seventh part: Studies on the dynamic changes of fixing drifting sand against wind function value of ecosystem in YUYANG District.

第六部分：榆阳区生态系统土壤保持功能价值动态变化研究；利用ERDAS8.5对遥感数据进行解译获得榆阳区土地利用数据和植被信息，利用R2V5.5数字化榆阳区政区图、地形图、植被图、土壤分布图及气象站点分布图，利用ARCINFOR8.3对各数字化图层进行投影转换、泰森多边形生成、DEM构建和叠加分析，利用ARCVIEW3.3从DEM数据中获取榆阳区的坡度、坡长面域数据，并将上述各图层格网化，然后通过栅格图层叠加分析和代数运算获取榆阳区生态系统土壤保持功能物质量和价值量时空动态变化数据，最后分析了其变化的时空特点及形成原因。

Finally, I apply the concepts of dragonfly's biotopes to Kanding ecological park. Various types of lentic and lotic freshwaters surrounded by abundant hydrophytes and multi layers trees are planned. Besides, ecological landscape design with construction proceeds in terms of the following aspects: site gradation and sewage system, circulations and land use, plantation types and materials, and ecological construction methods with waterfront design details.

最后应用蜻蜓生物托邦之概念於崁顶生态公园，其生态地景设计在规划层次上考虑不同型态之流水与止水域空间的配置以及复层密林植被与丰富之水生植物的应用；并且从整地与排水、土地使用区分与动线系统、植被类型与植材选定、生态工法与亲水细部构想进行设计与营造。

The change law of salt in transition layer and its effects on salt in unsaturated zone and saturated zone under ponding and evaporating conditions in Lubotan, Shaanxi province were studied. Both laboratory experiment and numerical simulation have been done for three kinds of initial condition.

在国内外有关土壤水盐运移规律研究成果的基础上，应用陕西省卤泊滩综合治理和谐生态模式，分析了在蓄水和蒸发条件下，土壤饱和层与非饱和层之间的过渡层中盐分变化规律以及对土壤饱和层和非饱和层盐分的影响。

social development and social civilization have an inevitable connection in nature.viewed from the angle or inherent unification of social system structure,civilized structure of society and society appraisal,civilized social sustainable development implys and requires:to build material civilization through handling properly the relationship between man and material,to build spiritual civilization through dealing rightly with the relationship among people,to build institutional civilization by boosting a rational relationship between man and society and to build ecological civilization by seting up sound relationship between man an nature.

摘 要：社会发展观与社会文明观具有必然的本质的联系。从社会系统结构、社会文明结构、社会评价结构内在统一的视觉看，社会可持续发展的文明意蕴和本质要求在于：在物质层面上，正确处理人与物的关系，坚持生产力尺度，建设物质文明；在精神层面上，正确处理人与人的关系，坚持人的发展尺度，建设精神文明；在制度层面上，正确处理人与社会的关系，坚持制度尺度，建设制度文明；在生态层面上，正确处理人与自然的关系，坚持环境尺度，建设生态文明。

In order to exploit efficiently the ornamental resource-Cerasus subhirtella var. ascendens, based on the importance value as one-dimension resource state, the niche characteristics of ten dominant tree populations in C. subhirtella var. ascendens community in Wuyi Mountain of Fujian Province were calculated and analyzed with Levins, Hurlbert, Pianka and Schoener formulas.

为了更好地开发利用野生早樱这一木本观花植物，以物种重要值为生态位计算资源状态指标，应用Levins公式、Hurtlbert公式、Pianka公式和Schoener公式对福建武夷山野生早樱群落乔木层10个优势种群进行生态位宽度、生态位重叠和生态位相似性比例的计算与分析。

The quadrats of the shrub layer and herbage layer were both coordinated into four ecological types in the space of the DCA ordination. The foremost environmental factors in the DCA ordination of shrub layer is illumination and moisture, while for the herbage layer it is moisture.

DCA排序将不同林分下的灌木层和草本层都分为了4个生态类型，其中，灌木层生态类型的区分环境因子是光照和水分，而草本层生态类型的区分环境因子则是水分。

It consists of double meaning: one is the land ecosystem self-security, another is land ecosystem security to human.

它包括两层基本涵义，一层涵义是土地生态系统自身的安全；第二层涵义是土地生态系统对人类的安全。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了