The planes with a load capacity of 100 tons each will be leased for a 10 year period and go into service in november 2006 and june 2007 . one of the airplanes is scheduled to do four routes per week between shanghai and europe 每架波音747的承载量是100吨，至少租借10年，分别将于2006年11月， 2007年6月投入使用，穿梭于上海和欧洲之间，其中一架每周飞行4趟。
The agriculture and pasturage zone of northern shaanxi is an important area in china for its geography and environment , its food can not carry the population . study on land production potentiality and land carry capacity has strategic significance for the zone 因此，研究该区土地生产潜力及人口承载量，对于促进粮食生产、协调人地关系和社会经济持续发展均具有重要的战略意义。
The section is comprised of four parts : calculation models of tourism environment bearing capacity , calculation models of tourism environment bearing rate , analysis methods of tebc in different time and analysis models of tebc in different space 旅游环境承载力计量依照从分量承载力计量到综合承载力计量的步骤。旅游环境承载力利用状况的计量是在承载力计量结果基础上，对旅游环境承载量和承载率的分析和计算。
Based on field review and data collection , we study the land production potentiality and land carrying capacity in the zone . the main conclusions are as follows . 1 the research estimates the cropland production potentiality by step correct method 本项目在野外考察和资料收集的基础上，对陕北农牧交错带土地生产潜力及人口承载量进行了系统的分析研究，得到以下主要结论和成果： 1采用逐步订正法估算作物生产潜力。
The land limited carrying capacity is 12148 thousand persons in the agriculture and pasturage zone of northern shaanxi , and the corrected land most carrying capacity is 9140 thousand persons , and the ideal carrying capacity is 6212 thousand persons 由于短期内土地最大生产力无法达到，生物生理性人口承载量和理想人口承载量近期内难以实现。根据不同时段投入下土地生产能力和人口发展预测，从现在到2030年，区域人口一直处于严重超载状况。
In the tourism development process , because traditional mass tourism focus only on the economic benefits , environmental benefits neglect 。 focus only on the number of tourists attracted , and the host of ecological carrying capacity , has caused serious damage to the environment 一、选题意义在旅游的发展过程中,由于传统的大众旅游只注重经济效益,忽视环境效益;只注重吸引的游客数量,不顾及旅游地的生态承载量,已经对环境造成了严重的破坏。
Some soil microbial activity parameters and heavy metals contents were analyzed by principal component method . the results showed that the critical levels of cadmium and lead in red clayed soil and red sandy soil were 15 mg . kg - 1 and 0 - 15 . mg . kg - 1 , 200 mg . kg - 1and 200 - 400 mg . kg - 1 , respectively . soil microbial populations and functional diversities of microbial community have changed to some extent under the stress of cadmium and lead pollution 在本文中我们将供试红壤的上述微生物活性指标和2种重金属含量进行主成分因子分析，其结果得出，红黄泥和红砂泥的土壤微生物活性镉胁迫的临界承载量分别为15mg ? kg ~ 1和0 15 ? mg ? kg ~ 1 ；铅胁迫的临界承载量分别为200mg ? kg ~ ( - 1 )和200 400mg ? kg ~ ( - 1 ) 。
In the past decades , some factors of over - loaded caarrying capacity of population , backward modes of production , backward life style and ecological fragility in multi - ethnic areas of the upper reaches of minjing river resulted in ecological degradation , for instance , vegetation , grass degradation and soli erosion and natural calamities occurred frequently 摘要在过去几十年，由于人口超过环境承载量，人们生产方式和生活方式落后，以及生态脆弱等诸多因素，导致岷江上游民族地区生态环境退化，如植被，草场，土地的退化及自然灾害频繁发生等。
Thirdly , designs the index system of nanjing ’ s environmental carrying capacity and uses hierarchy and vector analytical method to research nanjing ’ s environmental carrying capacity among the years of 1997 and 2003 . subsequently , the author analyzes the environmental carrying quantity , environmental carrying capacity , environmental carrying rate and their variational trends from 1997 to 2003 in detail . lastly , according to the above results , puts forward some measures to protect and advance nanjing ’ s evironmental carrying capacity 本文围绕着南京市环境承载力这一研究主线,首先从定性、定量两种角度对环境承载力的国内外研究现状进行综述;接着介绍了环境承载力理论的基本内容和南京市自然环境、社会经济状况;然后切入论文的核心部分,构建了多层次的南京市环境承载力指标体系,运用层次矢量分析法对1997 ~ 2003年南京市环境承载力及其变化情况加以量化研究,并以此计算结果为依据,详细分析了1997 ~ 2003年间南京市环境承载量、环境承载力、环境承载率的变化趋势;最后,针对上述分析结果提出保护和提升南京市环境承载力的几点策略。
