群落

The investigation collected total about 1800 insect specimens, 130 species belonging to 51 families, 9 orders, 2 classes were identified. Among them, 105 species (40 families, 6 orders, 1 classes) were pests and 25 species (10 families, 5 orders, 2 classes) were natural enemies. In addition, two new record species, Caulophilus oryzae and Bruchus dentipes, were found.

通过调查采集，共查到出口木制品仓储昆虫群落害虫及天敌2目、23科、38种；出口草柳藤制品仓储害虫及天敌3目、22科、34种；出口皮革制品仓储害虫及天敌4目、24科、44种；出口羽绒制品仓储害虫及天敌4目、20科、35种；出口笔刷制品仓储害虫及天敌3目、26科、39种。

From May to October 2004, the seasonal changes of K, Ca, and Mg contents and accumulation in Calamagrostis angustifolia, the dominant species in the typical meadow anti marsh meadow communities of Sanjiang Plain, were studied.

2004年5-10月，对三江平原典型小叶章草甸和小叶章－苔草沼泽化草甸群落优势植物小叶章的K、Ca、Mg含量与累积的季节变化进行了研究。

The middle and upper layers may be composed of Lepidodendron , Cordaites, Calamites and some tree ferns or seed ferns.

群落的中、高层通常是石松纲和科达纲，楔叶纲中Calamites及某些树蕨和种子蕨。

Results of sampling showed that the typical evergreen broad-leaved forest of Mt. Jiulianshan consisted mainly of subtropical families and genera with dominant families including Fagaceae, Lauraceae, Camelliaceae, Styracaceae, Ericaceae, and Magnoliaceae.

群落主要由热带、亚热带科属组成，优势科为壳斗科Fagaceae，樟科Lauraceae，山茶科Camelliaceae，安息香科Styracaceae，杜鹃花科Ericaceae和木兰科Magnoliaceae等科，优势树种以相应的优势科属树种为主。

Capparis Spinosa L is a good material for windbreak and fixation sand in despite of simple community structure.

虽然刺山柑的群落结果比较简单。但它是一种比较优良的防风固沙植物。

The study on the ecological characters of Casuarina equisetifolia can supply scientific evidences for management and selecting species.

其净初级生产力10.17 t／hm~2a，在沙地上的生产力可以与许多非沙土上生长的群落相比，可见其有较高的初级生产力水平。

Plant species richness and plant functional diversity have a positive influence on overall catabolic activity and catabolic diversity of soil bacterial community.

植物种丰度和植物功能多样性对土壤细菌群落的代谢活性和代谢多样性有成正比的影响。

The forest is composed mainly of the families, Rubiaceae, Myrtaceae, Myristicaceae, Lauraceae and Euphorbiaceae, and dominated by tree species, Metadina trichotoma, Syzygium cathayense, Knema erratica and Paramichelia baillonii. In physiognomy, the forest is characterized by the trees with mesophyllous, entire and leathery leaves. Woody lianas are found dominant, but trees with buttresses and cauliflory are relatively few in the forest.

结果显示，勐养山地雨林主要由茜草科、桃金娘科、肉豆寇科、樟科、大戟科等植物种类组成，以黄棉木、华夏蒲桃、假广子及山桂花为乔木优势种；群落乔木层以中叶、全缘、革质、尾尖、常绿植物占优势，灌草层植物则以中叶、全缘、纸质叶植物为主；藤本植物中以木质藤本占优势，板根和茎花现象少见。

In particular, Xanthium sibiricum and Celosia argentea have great effect on the biomass of plots after 4 months of drought stress.

研究同时发现干旱胁迫条件下，在14：00时一天中大气温度最高时段，物种丰富度越高的样地，其群落内相对湿度越高，温度越低。

Lindera glauca, Castanea seguinii, Celtis sinensis took up predominant positions, their importance values were 36.82, 31.09, 24.13 respectively.

该区群落以山胡椒、茅栗和朴树重要值最高，分别为36.82、31.09、24.13。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。