生态群落

With theoretical introduction and example analysis, the relationship between the living beings and it's environment could be elucidated at the level of individual, population, biocoenosis, ecosystem, and biosphere, respectively, aiming at making the students have the capability to grasp the fundamental knowledge system of ecology and ecological ideology, and improving the understanding of the environment problem.

本课程主要从个体，种群，群落，生态系统和生物圈等不同层次上分析生物与环境之间的关系方式，通过理论推介，案例剖析，使学生掌握生态学的基本知识体系和思想方法，形成宏观的生态思维，提高对当前资源和环境问题的认识能力和把握水平。

As the edge of the land and wet eco-system, the landscape ecological edge effect of urban waterfront area is manifest, such as complex biome structure and diverse habitat. It's also the most important recreational space of the city.

简介： 城市滨水区处在陆地与湿地生态系统的边界，其景观生态边界效应明显，如生物群落结构复杂，生境多样等，但同时也是城市游憩休闲空间的重要载体。

The human ecosystem concept is then grounded in the deconstruction of the human/nature dichotomy, and the emergent premise that all species are ecologically integrated with each other, as well as with the abiotic constituents of their biotope.

人类生态系统这一概念的基础就是人和自然二分法的解构主义、以及所有生物都是同群落环境中的无机要素在生态上相互融合的这一自然前提。

Niche breadths of most native populations in natural forest were wider than that of P. armandii forest. Furthermore, competitions among populations were not so strong, and community structure was more stable, because of great niche differentiation in natural forest.

天然林中大多数乡土树种的生态位宽度较之在华山松林中大为增加，但由于长期协同进化，种间生态位分化程度高，种间竞争较缓和，群落具有很高的稳定性。

Using the Pearson correlation coefficient and Spearman rank correlation coefficient, the interspecific association of 13 species in different communities in Beijing mountainous area were investigated, and the niche breadth and niche overlap of 13 species were studied.

应用Pearson相关系数和Spearman秩相关系数检验，研究了北京山区天然林群落13个乔木种群的种间关联性，并对13种植物种群的生态位宽度和生态位重叠进行研究。

Based on the investigation of 38 forest plots in Beijing mountainous region, the niche breadth and overlap of seven rare and endangered herbage plants Glycine soja, Cypripedium macranthum, Malaxis monophyllos, Herminium monorchis, Paeonia obovata, Platanthera chlorantha and Liparis japonica were calculated and analyzed. The results showed that G. soja had a wider niche breadth (0.297), while C. macranthum, M. monophyllos and H.

基于北京山区有珍稀濒危草本植物分布的38块森林群落样地调查数据，对北京山区的野大豆、大花构兰、沼兰、角盘兰、草芍药、二叶舌唇兰和羊耳蒜等7种珍稀濒危草本植物进行了生态位宽度和生态位重叠计算与分析。

Processing area air temperature is slow drop, relative humidity is slow increase, small habitat is improved apparently, form processing area zoology basically to regain the advantage with benign loop, for the advantage the tree is planted form stable and top class community, the silvan ecosystem outside enchase and blending in area levelled road.

治理区域气温缓慢下降，相对湿度缓慢增大，小生境明显改善，基本形成治理区域生态恢复和良性循环的有利条件，为优势树种形成稳定顶级群落，镶嵌和融入区域外的森林生态系统铺平了道路。

The process and characteristics of different degenerated ecosystem types, including aquatic, everglade, island, agriculture and hill, the energy flow and matter cycle process in the typical communities in varied restoration state were studied.

对生态恢复不同阶段的典型群落的能量流动和物质循环过程，退化生态系统的演替与发展过程，进行多方面的研究。

The niche breadth and niche overlap for dominant species of the arbors layer were calculated.

摘 要：以湘中丘陵区石栎群落为调查研究对象，分析了群落的特征，定量计测了乔木层主要树种的生态位宽度和重叠值。

Both niche differentiation and neutral process took effect in structuring the community in monsoon evergreen broadleaved forest were concluded.

关于群落物种多样性的维持机制，本研究提出&联合作用假说&，即生态位分化和中性过程的联合作用维持群落物种多样性。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。