查询词典 communities

Before the treatment of drought stress, most of communities can be classified into following seven types with biomass of dominant species which took account of 60% in the plots: Triumfetta bartramia, Urena lobata, Cynodon dactylon, Gahnia tristis, Ageratum houstonianum, A/rtemisia argyi and Ambrosia artemisiifolia. There was no dominant species in other communities. Totally, there are 33 common species distributed in these plots.

在群落自然生长一年后，根据群落内物种生物量所占比例，将样地群落划分为七个优势物种类型(优势物种生物量所占比例均在60%以上，盖度在群落内均最大)：刺蒴麻、肖梵天花、狗牙根、黑莎草、藿香蓟、家艾和豚草，其余为均匀度较高没有优势物种的样地。

Then, a dynamic strategy of finding education resources in grid communities based on small world is proposed, relevant algorism is compiled, and the finding of education resources fast and accurately in dynamic communities is realized.

提出了基于小世界模型的网格社区中教育资源的动态发现策略，并编写了相应的算法，实现了基于社区动态环境下的教育资源快速、准确发现。

The function and the changeable trait of cooperative economic organization among rural communities, and points out that our country's cooperative economic organization among rural communities is the realized shape of community ownership in rural district, not the artel on the real meaning.

论文第三部分重点研究了我国传统农村经济组织资源——农村社区合作经济组织的功效及可改造性，指出我国的农村社区合作经济组织并非真正意义上的合作社，而是集体所有制在农村的实现形式。

The benthic assemblage eco-positions of brachiopod communities in the early Early Carboniferous were between BA1 and BA2, and there were no BA3-BA5 deep-water communities in this area, which indicated that the sea water depth in this period was commonly less than 10 m.

本区早石炭世早期腕足动物群落的生态位介于BA1和BA2之间，缺乏BA3至BA5较深水群落（BA-Benthic Assemblage，底栖组合），说明该区早石炭世早期海水深度一般不超过10 m。

The niche breadths of same plants vary greatly among different communities and the competitive relations of the plant species in different communities vary depending on the combined actions of the niches of the species, stable landforms and soil conditions, and annual rainfall fluctuations.

同一种植物在不同群落中的生态位宽度变幅较大，不同群落内部植物种竞争关系的差异是由物种的生态位和由相对稳定的地貌、土壤条件以及随年际变动的降水条件共同作用的结果。

The species diversity of Dipentodon sinicus communities in Yushe National Forest Park of Guizhou province was studied based on the quadrate method. The results showed that Rosaceae, Ericaceae, Betulaceae, Fagaceae, Theaceae, Lauraceae, Caprifoliaceae, Cornaceae were the dominant families in D. sinicus communities of Yushe National Forest Park. In the 10 sample plots, there were 8 which were absolutely dominated with D. sinicus population, the importance value came up to 135.69 on average, and it was far higher than the others. For D. sinicus communities, the abundance index (2.847), Simpson index (0.601), Shannon-Wiener index (1.523), probability of inter-specific encounter (0.601) and species evenness (0.569) of the tree layer were lower than those of the shrub layer (5.580, 0.830, 2.377, 0.829, 0.672, respectively) on the whole. It markedly showed a species diversity characteristic of the mixed broadleaved evergreen and deciduous forest in middle subtropics. In the 10 sample plots, the species diversity level of Q1 was the highest, followed by Q3, Q5 and Q6 was the lowest.

摘要运用样方法对贵州省玉舍国家级森林公园稀有保护植物十齿花群落的物种多样性进行了研究，结果表明：玉舍国家级森林公园十齿花群落以蔷薇科、杜鹃花科、壳斗科、桦木科、山茶科、樟科、忍冬科、山茱萸科等为优势科；10个样地中有8个样地以十齿花种群占绝对优势，其平均重要值高达135.69，远远高于其它种群；十齿花群落乔木层物种丰富度为2.847、Simpson指数为0.601、Shannon-Wiener指数为1.523、种间相遇机率为0.601、均匀度指数为0.569，总体上均小于灌木层(分别为：5.580、0.830、2.377、0.829、0.672)，表现为较明显的亚热带常绿落叶阔叶混交林的物种多样性特征。10个样地中，Q1的物种多样性程度最高，Q3次之，Q5和Q6最小，多样性程度最低，10个样地的物种多样性排序为Q1＞Q3＞Q9＞Q7＞Q2＞Q4＞Q10＞Q8＞Q5＞Q6。

The results showed:①the communities that stipa baicalensis is edificator had the highest species diversity, and the idea that stipa baicalensis communities were the local zone vegetation was supported;②the majority of studied communities were unsaturated in the species diversity, and the species diversity had a tendency to increate with the improvement of soil environment;③the relation of species diversity to community productivity was a one-humped function, that is, the species diversity of mediation productivity was highest;④the species diversity under intermediate disturbance was highest, and the intermediate disturbance hypothesis was supported;⑤the content of potassium in soil had probably an important function, or was an important following factor in the types of grassland community;⑥a new hypothesis on the forming mechanism of species diversity of community, Small Scale Competition and Random-Patch Dynamic Hypothesis, was put forward boldly.

通过上述研究分析得出如下结果：①以贝加尔针茅为建群种的群落物种多样性最高，从物种多样性角度证明该群落类型最适应本区气候和环境条件，应是本区的地带性群落；②绝大多数群落的物种多样性处于未饱和状态，随土壤环境的改善呈明显的增加趋势；③物种多样性与群落生产力呈单峰函数关系，即在中等生产力水平时物种多样性最高；④放牧中等干扰水平物种多样性最高，支持Connell的中度干扰学说；⑤偶然发现土壤钾含量可能在草地植被类型分化中起到重要作用，至少是一个重要的伴随因子；⑥大胆提出了群落物种多样性构成机制的新学说即小尺度竞争随机斑块动态学说。

This investigation into the public power supervision in the rural communities in this paper has gone beyond the limitation of most other studies in this field, which focus on the villagers" supervision over the power exercised by village committees only from the perspective of "self-government of villagers. A systematic survey of the system arrangement for public power supervision in rural communities is conducted from the perspective of village administration. It also analyzes the deviances which arise in the operationprocess of public power supervision system in current rural communities and furthermore explores the main reasons behind the deviances.

本文突破了以往理论界在探讨村社区公共权力监督时，仅从村民自治的角度出发，着重研究村民对村委会权力运作监督的局限，从村治的角度对现阶段的村社区公共权力监督制度安排进行了系统梳理，在此基础上分析了目前村社区公共权力监督制度在实施过程中所产生的偏离现象，并进一步地探讨了这些偏离现象产生的主要原因，最后，就如何减少监督制度运作的偏离提出了一系列思考。

The results of the study on the plant communities among the stages of regressive succession indicated that the dominants and components of the communities changed with the aggravation of degradation, and the plant communities changed from the grass family-dominant community to the forbs-dominant one.

： 通过对高寒矮嵩草草甸不同退化演替阶段植物群落的研究显示，随着退化程度的加重，群落的组成和优势种等发生了很大的变化，植物群落从以禾本科为主，向以杂类草为主的群落演替。

At the same time, the biomass of species-rich community was more sensitive to the change of environmental conditions, while communities with fewer species had a little change in biomass.2 There were a total of 87 vascular plant belonging to 27 families and 68 genus in the six communities. Most species had a narrow distribution and a lower local abundance, while few species had a wider range and higher local abundance, and this distribution trends varied in different communities. The endemics were positive correlation to y diversity.

物种丰富的群落生物量对环境条件的变化敏感，较过去显著降低，而种类构成简单的群落则变化不大。2在6种植物群落中共出现27科68属87种高等维管植物，大多数物种具有狭窄的分布范围和较小的局域多度，而少数种具有较广的分布范围和较大的局域多度，并且这种分布趋势在不同的群落类型中又有所不同，γ多样性高的群落中特有种的数量增加；而γ多样性低的群落中稀有种数量相对较少。

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。