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1)  Flea community
蚤类群落
2)  fish community
鱼类群落
1.
Changes of fish community in the proceeding of eutrophication of the Nanhu Lake, Changchun;
长春南湖富营养化进程中鱼类群落的变化
2.
Status of fish community in East China Sea using the method of abundance-biomass comparison (ABC) curve;
以数量生物量比较曲线评价东海鱼类群落的状况
3.
Spatial and temporal variations of fish community structure in the Pearl River Estuary waters;
珠江口鱼类群落结构的时空变化
3)  Rodent community
鼠类群落
1.
An investigation on current status of rodent community transformation in restored forest from farmlands in western regions of China;
西部退耕还林还草后鼠类群落改变的现状调查
2.
Structure of rodent community in farmland-fruit areas of loess plateau in the east of Shaanxi;
陕西东部黄土塬农作果树区鼠类群落结构
3.
The purpose of study is to explore ecological-distribution pattern and law of succession of rodent community.
结果表明:荒漠开垦为林地,红尾沙鼠占据主导地位;开垦为农田,鼠类群落表现出较大差异:棉田中柽柳沙鼠占主导地位,麦田中小家鼠为优势鼠种,苜蓿地则以小林姬鼠为主,白菜地中灰仓鼠占据优势地位;城镇居民区“伴人”鼠种褐家鼠居于绝对优势。
4)  Bird community
鸟类群落
1.
Study on species diversity and stability of the bird community in korean pine-broadleaf forest of Changbai Mt.;
长白山红松阔叶林鸟类群落多样性与稳定性研究
2.
Changes of a forest bird community in Hong Kong in 10 years;
香港大埔滘天然次生林鸟类群落结构变化(英文)
3.
Structure and diversity and protective strategies of bird community in Nansha wetland, Guangzhou;
广州南沙湿地鸟类群落组成、多样性和保护策略
5)  community types
群落类型
1.
liaotungensis populations in different community types were analyzed in five sampling scales(2m×2m,3m×3m,4m×4m,5m×5m and 10m×10m)using David and Moore s index,Lloyd s index,Morisita index and the methods by comparing mean square and block size.
为了揭示辽东栎种群空间分布格局的形成机制、种群分布规律和动态变化,采用标准地法,应用偏离指数、Lloyd的平均拥挤度和聚块指数、Morisita指数及均方-区组分析,在5个取样尺度下对不同群落类型中辽东栎(Quercus liaotungensis Koidz。
2.
The main target community types districte.
针对针叶林阔叶化改造目标的关键问题,通过大量的调查研究,分析树种间的关联程度、物种多样性程度、森林群落的模糊聚类和自然演替序列,表明针叶林的阔叶化改造目标,要根据演替进程和立地条件,分别确定由于时间和生境不同而产生的阶段目标和环境条件制约下的不同目标群落类型,实行科学分类指导。
3.
mongolica populations was analyzed along four altitude grades, three community types and three latitude grades by using ISSR DNA technique.
海拔及纬度因子显著影响樟子松天然林群体的遗传多样性水平,不同群落类型对群体的遗传多样性影响不大。
6)  Community classification
群落分类
1.
Three association classes, two association groups and thirty associations were identified by the community classification methods.
〕在广西各个自然区域都有广泛的栽培,本文利用群落分类的方法将广西的杉木林划分出3个群丛纲,2个群丛组,30个群丛。
补充资料:C24类甾醇类
分子式:
CAS号:

性质:胆汁酸属于类甾(或固)醇类,又称为C24类甾醇类。正常人胆汁中有结合胆汁酸和游离胆汁酸两大类,并以前者为主。游离胆汁酸有胆酸、脱氧胆酸和鹅脱氧胆酸等;结合胆汁酸系指上述胆汁酸以酰胺键(简称肽键)与甘氨酸或牛磺酸结合,分别成为甘氨胆酸或牛磺胆酸等。这些化合物存在于大多数脊椎动物中,是“胆苦”的主要成分。结合胆汁酸易溶于水,这是由于其分子中既含有亲水的羟基和羧基,又含有疏水的甲基,且这两种性质不同的基团又完全排列在环戊烷多氢菲核的两侧,使分子分为“亲水”和“疏水”两个侧面。故结合胆汁酸具有强乳化剂功能,使肠腔内油脂乳化成微粒,以增加油脂与消化液中脂肪酶(lipase)接触面积而便于脂类消化吸收,同时也促进对脂溶性维生素的吸收。

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