生态种的

Although each of the 11 species of the bark beetle had its own spatial niche and overlogs niche, they could attain competitive equilibrium and coexistance according to their requirment for different nutrition and space, the interference of population density and the different time interval attacking the host tree.

虽然，这11种小蠹虫具有各自不同的生态位宽度，且存在不同程度的生态位重叠，但各小蠹虫可依据其对寄主树木营养和空间需求的不同、种群密度的相互制约，以及入侵寄主树木时序的差异达到竞争的平衡和共存。

Civilization can be viewed as a stage of cultural evolution, and ecological civilization indicates the fundamental change in conception of culture, which is helpful for the ecological turn in conceptional system of culture.

文明可以视为文化进化的一种存在状态，而生态文明表明了文化的观念状态发生了根本性的变革，这种变革最终将增进文化的观念系统的生态化取向。

To examine the influence of systemic factors on aged progenitor cells from these tissues, we established parabiotic pairings (that is, a shared circulatory system) between young and old mice, exposing old mice to factors present in young serum. Notably, heterochronic parabiosis restored the activation of Notch signalling as well as the proliferation and regenerative capacity of aged satellite cells.

为了查明系统因子对来自这些组织的衰老祖细胞的影响，我们在幼鼠和老鼠之间建立了共生态配对试验（即：一种共享的循环系统），给老鼠输入含有年轻因子的血浆，奇怪的是，异时性共生态细胞Notch信号重新激活，同时恢复了衰老干细胞增生和再生能力。

Six kinds of superior Leguminosae and grasses including Sweet pea , partridge pea , Utah sweet vetch , meadow brome , yellow bluestem and cambar bluegrass are introduced from the Western and Middle parts of USA with similar climate to the Loess Plateau according to the theory of similarity of climate. The experiments are focused on adaptability, regularity of growth and development, eco-economic values, and technique and model of cultivation of the introduced plants, following the procedure of primary test, regional test and production test.

按照&气候相似论&的观点，选择与黄土高原生态条件较为接近的美国中西部地区，引进了多年生香豌豆、美丽鹧鸪豆、犹他甜苕子、牧场草、黄兰沙梗草、康巴早熟禾等6种优良水土保持草本植物，按照&初选试验—区域性试验—生产性试验&的程序，对引进植物的物候、抗性、生长发育规律、生态经济价值、栽培技术等进行系统研究。

In recent years it has been exploited to be a famous scenic spot. To avoid vegetation degradation resulting from human activities and strengthen plant protection, Carpinus turczaninowii communities in great valley were selected as our research subject. The species diversity, interspecific association and correlation, niche breadth and niche overlap in these communities were studied using quantitative methods.

为了加强对该地区植被的保护，避免因人为干扰而导致的植被破坏和退化，本文以太行山南段的小叶鹅耳枥群落为研究对象，在分析了群落主要特征的基础上，应用数量生态学方法，分别从群落的物种多样性、优势种群的种间关系和生态位三个方面，客观定量地分析了植物群落的生态关系。

The actuality of combination of farming and graziery incarnates the differences of two production systems, agriculture and stock raising, in aspects of input and output, absorbing labour force and intensity acting on environment, which is result of confliction and balance of human and environment. Of course this balance did not consider the environmental cost and ecological risk, and land degradation is the problem of this selection.

科尔沁沙地农牧交错的现状体现着农、牧业两种生产系统的投入产出差异、对劳动力消纳能力以及对土地作用强度的多相矛盾，是人地矛盾协调与平衡的结果，是&人尽其责，地尽其用&追求最大效应的选择结果，当然这种选择是没有考虑环境成本与生态风险，而土地退化就是这种选择对生态环境影响的重要表现形式。

The results showed that 37 species of Physciaceae from Xinjiang covered 6 geographical elements and 6 ecological forms.

结果表明，分布在新疆的蜈蚣衣科地衣共有37种，分属6种地理成分和6种生态类型，主要分布在新疆的天山和阿勒泰山。

Temperate Ulmus pumila sparse forest grassland ecosystem in Inner Mongolia Plateau is a special ecosystem in China, and even in the world. Its study is of significance in deeply understanding the vegetation distribution patterns in the earth, and favoring the protection of this ecosystem.

内蒙古高原分布的温带榆树稀树草原生态系统在中国乃至世界上都是一种特殊的生态系统，对于它的研究可加深对植被分布规律的理解，且有利于该系统的保护。

The traditional notion of technology innovation regards economical benefits as ultimate objective, which singularized the social functions of technology innovation. As a result, the relationship became estranged between mankind and nature, socio-economic development was out of balance.

生态化技术创新是一种新的技术创新观，在以经济增长为中心的前提下，谋求自然生态、经济效益、社会和谐以及人的全面发展的良性互动与协同共进，与构建和谐社会是内在一致的。

Presently,many models can simulate the variety of soil water in the angel of time and space and it can appraise the transforming volume of the soil water in different period and space according to this information in order to reach the goal of applying the water resource reasonably.

0引言喀斯特地区是一种典型的生态环境脆弱区，由于自然因素和人为因素造成了该区具有土层薄、土壤侵蚀退化严重、地表漏水系数大的特点，生态环境非常恶劣，严重地制约了这里的社会经济的发展。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！