生态群落

The results indicated:During the course of vegetation natural recovery, there are different stage of secondary sere at different degree of degraded lands, that is secondary herbosa; secondary scrub; masson pine coniferous forest; conifer and broad-leaved mixed forest; every green broad-leaved forest.

本项研究从比较生态学入手，分析了千岛湖地区退化森林生态系统不同植被恢复措施，即：自然恢复、人工促进自然恢复和人工恢复措施下的群落生态变化，比较了不同措施之间的生态响应差异，研究结果表明：①在植被自然恢复过程中，由于生态系统退化程度的不同，存在草灌丛、灌丛、马尾松林、混交林和常绿阔叶林整个演替序列。

This weed population had a wider niche breadth, the second widest among 12 major weed populations in weed community, and had bigger niche overlap with Stellaria alsine, Alopecurus acquallis, Malachium aquaticum, Poa annua, Polygonum persicaria and Lapsana apogonoides. In rape, wheat or fallow, B.

在杂草群落中，草的生态位宽度居第2位，说明其有潜在的较强的适应环境的能力；草与雀舌草、看麦娘、牛繁缕、早熟禾、春蓼和稻搓菜等杂草种群的生态位重叠较大，与它们的生态要求比较接近。

Interactions between fertilizer addition, plants and the soil environment: Implications for soil faunal structure and diversity.

随着研究的深入发展，土壤动物群落生态学研究将不断与农业生态、环境生态、城市生态和恢复生态等应用生态学领域结合。

Interactions between fertilizer addition, plants and the soil environment: Implications for soil faunal structure and diversity.

随著研究的深入发展，土壤动物群落生态学研究将不断与农业生态、环境生态、城市生态和恢复生态等应用生态学领域结合。

Take Fuzhou , this historical cultural city , as an example: According to the space heterogeneity of different dividing areas in the city and the green corridor structure of city (among them the green corridor passes through the other ring to take green, the Tenneco green land and garden green land of center district), the problems of how to draw the cleanness, wet and cold air around the surround into the center of city through the high green forest community which alleviate the tropical island effect and improve air quality and how to build the ecological view system of the city are discussed to make the city ecological view environment play its social role, the city will not develop at the cost of ecological view components , such as nature , history , and at the basis of expurgating, properly, the distillate of design in the history of the city humanity which would be a design language to stretch the nature, history and humanity view environments.

以福州这座历史文化名城为例：根据城市不同分区的空间异质性，贯通城市内的绿廊结构(其中绿廊穿越外环绿带、楔形绿地和中心区园林绿地)等探讨在城市化不断发展的过程中如何将城市周边清洁冷湿的空气经过高绿量的森林群落引入城市内部，缓解热岛效应，改善空气质量；以及如何通过城市的生态景观系统的营造使得城市的生态景观环境能够作为一个系统而充分发挥它的社会职能。通过对一个城市历史的系统解读使得城市化的发展过程不再是以自然、历史、人文等生态景观组成部分的破坏为代价，而是合理地提炼城市人文历史中积淀下来的部分，设计成为这个城市未来生态景观规划中的一个设计语汇，从更宽泛的角度延展这个城市的自然、历史和人文的景观环境。

In living space, the Wenghui Biota can be redivided into"Upright Community","Depositional Surface Community", and"Super-water Community", to form a primordial tri-dimension ecosystem.

瓮会生物群在空间上可分为&挺立群落&、&沉积表层群落&和&水体上层群落&，而构成了一个原始而相对完整的生态系统。

Based on the importance value, the Shannon-Wienner and Simpson index of niche breadth, the Schoener's niche proportional simulation and the Levins' niche overlap of the main trees in Qiandaohu water conservation forests were calculated in the paper.

以群落样地作为资源状态，以树种的重要值作为树种对资源位计测依据，用Shannon-Wienner、Levins和Schoener的生态位计测公式，分析了千岛湖水源涵养林26个主要树种的生态位宽度、生态位相似性比例和生态重迭指数。

In order to exploit efficiently the ornamental resource-Cerasus subhirtella var. ascendens, based on the importance value as one-dimension resource state, the niche characteristics of ten dominant tree populations in C. subhirtella var. ascendens community in Wuyi Mountain of Fujian Province were calculated and analyzed with Levins, Hurlbert, Pianka and Schoener formulas.

为了更好地开发利用野生早樱这一木本观花植物，以物种重要值为生态位计算资源状态指标，应用Levins公式、Hurtlbert公式、Pianka公式和Schoener公式对福建武夷山野生早樱群落乔木层10个优势种群进行生态位宽度、生态位重叠和生态位相似性比例的计算与分析。

Daya Bay was shown to be ecologically disturbed and the stability of macrobenthic community was weak. Specifically, the inner bay and main area of the central bay was strongly disturbed and was dominated by Group Ⅰ community that was characterized as simple low stability and dominated by molluscs. Dominant species were Veremolpa micra and Timoclea scabra.

大亚湾海域生态环境受到明显的扰动，处于扰动状态中的大型底栖动物群落稳定性较差；湾顶和湾中大部分海域内的群落Ⅰ，为大亚湾的主体群落，以软体动物为主，种类组成单一、季节变化小，以小鳞帘蛤Veremolpa micra和粗帝汶蛤Timoclea scabra为特征种。

Daya Bay was shown to be ecologically disturbed and the stability of macrobenthic community was weak. Specifically, the inner bay and main area of the central bay was strongly disturbed and was dominated by Group I community that was characterized as simple low stability and dominated by molluscs. Dominant species were Veremolpa micra and Timoclea scabra.

大亚湾海域生态环境受到明显的扰动，处于扰动状态中的大型底栖动物群落稳定性较差；湾顶和湾中大部分海域内的群落Ⅰ，为大亚湾的主体群落，以软体动物为主，种类组成单一、季节变化小，以小鳞帘蛤Veremolpa micra和粗帝汶蛤Timoclea scabra 为特征种。

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。