生态

Due to unique physiographic conditions and profound effects of human activities, Shiyang River Watershed has been facing the serious ecosystems degradation and ecological crisis, and being the typical ecological degradation area of inland watershed in the northwest China.

由于特殊的自然地理条件和不合理的人类活动，生态环境退化，出现了严重的生态危机，成为我国干旱区内陆河流域生态退化的典型和社会各界广泛关注的焦点。

Altitude and groundwater level had significant effect on plant species diversity in piedmont plain.

灌丛植被重要的生态、社会经济作用已经引起了人们的重视，对于区域生态环境的维护和建设具有重要的作用[2，3]，并对我国西部干旱区生态环境的稳定具有深刻的影响。

Secondly, this paperalso uncover the competitive, cooperative, parasitical and predacity relation betweenBlog unit, colony as well as that of unit and colony.

所以，本研究借鉴了生态学的物种及种群的分析框架和有关成果，在此基础上，首先通过对Blog生态位、生态因子、生态型、生态数据的描述建立了这样一个物种体系，继而对Blog物种的种群特征如年龄结构、出生率和死亡率、数量发展曲线和种群波动等进行了分析和诠释，描绘出一个Blog的种群系统。

With the development of research in eco-physiology of plants in adverse environment, and the need of environmental protection or reconstruction, it is pressingly necessary to enhance the eco-physiological research in desert psammophytes, in depth and systematically.

但是随著植物逆境生理生态在宏观和微观方面研究的不断深入和生态环境建设的需求，迫切需要加强沙生植物生理生态研究的深度和研究的系统性。

As a new tourism development style,ecotourism has the characteristics of combiningpopularization with specialization,primitivism with eco-culture,consumption with production,and educational function,etc.

生态旅游作为一种新的旅游发展方式，具有普及性和专业性、原始性和生态文化性、消费性和生产性、以及宣传教育等特点，其产生不仅在于适应了人们回归自然的需求，更在于迫切需要改变全球生态危机日益严重的形势。

Being the prolegomenon of the special issue, this paper briefly discusses the relationship between ecosystem management and Eco-informatics, the society need of knowledge development, and the main research area.

该文在简要地论述生态系统管理与生态信息科学的关系，学科发展的社会需求和主要研究领域等问题的基础上，概要地介绍了研究小组近年来在生态信息科学与数据资源管理领域的主要工作研究进展。

A series of control measures were proposed, such as comprehensive pollution control, construction of decontaminated wetlands in estuarine area, construction of the ecological bank and lakeside wetland, removal of the purse net, dredging and restoring the topography of lake basin, vegetation restoration, ecological restoration and management, and so on.

提出了污染综合防治、河口强化净化型湿地建设、生态护坡与湖滨带湿地建设、湖区养殖围网拆除、清淤与湖盆形态修复、湖区植被恢复与生态修复和湖泊生态管理等一系列整治对策。

Based on the fact that it lacks of quantification about the theory at present, this paper puts forward the new idea about mechanism of system coupling using emergy method in the ecotone between agriculture and pasture in North China as an example, where has serious dilemma of economical and ecological.

以农牧交错带为例，针对在生态经济系统目前该理论的定量化方面研究不足的事实，提出用能值方法考虑农牧交错带系统耦合的机制，并指出农牧交错带系统耦合机制应建立在土地利用方式、子系统间能值转化过程和生态系统的能值储备上；同时影响系统耦合机制的主要因素有初级生产力的大小、畜牧业的内部结构和畜牧业的发展规模以及生态系统服务价值的大小。

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。

An outstanding performance for different industries, will be in a certain region of the formation of several "industrial pole", that is, with the green GDP growth and ecological concepts and the promotion of ecological footprint calculation and the strengthening of eco-taxes, will result in the distribution industry redifferentiation, but there will be a recycling process, of course, is in the resources and technological advantages of the combined effect of re-differentiation process.

一个出色的表现为不同行业，将在一定区域内形成几个"工业极点"，就是与绿色GDP的增长与生态的概念和促进生态足迹计算和加强生态税，将导致物流业分化，但将是一个循环过程，当然，是在资源和技术优势的综合效应重新分化过程。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。