生物多样性

This paper also summarizes the scientific issues the current biogeography focuses on, with an emphasis on the applications of biogeographical approaches in biodiversity conservation.

学科思想的演变也使得生物地理学研究内容发生变化，本文还综述了当今生物地理学所关注的科学问题，并重点论述了生物地理学方法在生物多样性保护中的应用。

This paper focuses on the discussion of the function and significane of reserva-tion in conserving biological diversity.

生物多样性是生物在其漫长的进化过程中所形成的，是生物与其生境相互作用的结果。

The Journal publishes original research papers, review articles, short communications, book reviews, forum articles, announcements or letters on applied ecological, environmental, biomathematical and informatical or multidisciplinary agricultural research, including information technology and biometry in agriculture; sustainable agriculture; natural resource management; ecological monitoring and modeling; biodiversity and ecosystem research; statistics and modeling in epidemiology.

杂志刊载原始研究文章，评论文章，短通讯，书评，论坛文章，通告或信件，内容涉及应用生态学，环境，生物数学和信息或多学科农业研究，包括农业信息技术和生物测定；可持续性农业；自然资源管理；生态学调控和模式；生物多样性和生态系统研究；统计学和流行病学模型。

In plantation ecosystem, the vegetation diversity decreased due to natural factor or human activity, but the level of diversity is not always lower than that of other ecosystems. Especially in region with rare vegetation, the level diversity of undergrowth vegetation in plantation is higher.

人工林林下植被多样性会因自然或人为因素而下降，但是林下植被多样性并不低于所有自然生态系统，在植被稀少、种源匮乏地区，人工林林下植被的生物多样性甚至高于自然生态系统。

The journal established in 1991, focuses on the field of macroecology: the study of broad, consistent patterns in the ecological characteristics of organisms and ecosystems, including studies addressing general ecological hypotheses, exploring and testing using data of broad geographic, taxonomic, or temporal scope; studies documenting ecological and biogeographic patterns, theoretical studies exploring the causes of those patterns, applied studies of impacts of anthropogenic influences, as well as methodological studies of the tools used to study these problems; broad-scale patterns of biodiversity, ecosystem responses to global climate change, historical and evolutionary biogeography, remote sensing of ecosystem properties, species abundance and species range patters, and statistical methodologies.

杂志创刊于1991年，主要致力于大生态学：生物体的生态学特征和生态系统广泛一致的研究，包括介绍普通生态学假设，通过地理学，分类学，或有限范围内的数据探索和试验的研究；验证生态学和生物地理学模式的研究，探索这些模式原因的理论研究，人为影响的应用研究，以及用于研究这些问题的工具的方法学研究；大尺度生物多样性模式的研究，生态系统对全球气候变化的反应，历史和进化生物地理学，生态系统的遥测，物种的丰度和物种变化模式，以及统计学方法论。

Shannon-Wiener diversity index, Simpson diversity index and evenness index all show similar trend of change. The diversity indexes and evenness index of zoobenthos in rice-duck farming ecosystems are higher than those in normal paddy during the early stage of rice growth, but are in the reverse trend during the later stage.

水稻各生育时期常规稻田和稻鸭共作稻田底栖动物的Shannon-Wiener多样性指数、Simpson多样性指数和Pielou均匀度指数变化趋势相似，均为水稻生育前期稻鸭共作稻田的生物多样性指数和均匀度指数高于常规稻田，而后期低于常规稻田。

The quantum advances in biological oceanography will lay heavy stress on four phases,which embrace the important function of the diversity of species in biog...

生物海洋学的未来重大进展将表现在生物多样性在生物地球化学动力学中的重要作用、功能生态学、生物聚集体的结构动力学以及人类影响和生境关系等4个方面。

This study selected the ephemerals which grow in the Gurbantunggut Desert Area as the object of the study, which is based on the field sampling and the bourgeoning experiment in laboratory, The distributing , bourgeoning status,density, diversity of the soil seed banks and its relationship with vegetation showed in this area sand dunes were studied.

采用野外定点取样和室内萌发相结合的试验方法，研究了短命植物在沙丘不同部位的空间分布、萌发状况、密度、物种多样性及土壤种子库生物多样性与地上植物多样性的关系。

In practice, it was impossible to obtain the detailed information of all species in a targeted area of BIA, so the species-level impact assessment should be addressed through the studies on the key objectives like the species which were protected and closed related to people or species of economic and cultural values, etc.

生态系统的影响程度用旅游规划实施影响后的生态系统多样性承载能力的损失量与旅游规划前的生态系统多样性承载能力的比值来衡量。5、物种影响评价首先根据生物多样性保护目标的要求，确定重点评价对象。

Natural Resource Management provides knowledge and tools to understand the interactions between the biotic and abiotic factors in agro-systems in order to facilitate the current multitude of agricultural demands: bulk vs.

自然资源管理提供知识和工具，了解了两国在农业生物和非生物因素的相互作用的系统，以促进农业的要求当前众多：与专业散装产品，食品与生物柴油，保护生物多样性，气候变化，处理生态旅游。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。