森林群落

大气CO2浓度升高与森林群落结构的可能性变化

Increased atmospheric CO _2 concentration and the possible alteration in structure of forest community

全球变化背景下大气CO2浓度升高与森林群落结构和功能的变化

Increased atmospheric CO_2 concentration under global change and the alteration in structure and function of forest community

香港岛森林群落的数量分析&模糊聚类、相互平均排序与R型主分量分析

The Fuzzy Cluster , Reciprocal Averaging Ordination and R-Principal Component Analysis of Forest Communities on Hong Kong Island

从而证明PCA法在该区森林群落研究中具有良好的适应性。

It was proved that PCA method was applicable to the study of the aestatisilvaes .

珠三角城市森林群落优势乔木吸收C、N、S和重金属Pb、Cd、As能力研究

Study on C , N , S and Heavy Metal Pb , Cd , As Accumulation in Urban Forest Community in Pearl River Delta

2）处于亚顶极阶段的森林群落各层次多样性指数（D和H′）特征是乔木层<草本层<灌木层；

2 ) communities at the sub climax stage also showed different trends in diversity among layers & diversity indices ( D and H ′) were lowest in the tree layers followed the herb and shrub layers sequentially ;

采用Shannon-Wiener指数和Petraitis's重叠指数对太岳山森林群落19个优势种群的生态位进行研究。

The niches of 19 dominant populations in Taiyue Mountains forest community , Shanxi are studied by using Shannon-Wiener and Petraitis'overlapping indices .

以卧龙亚高山暗针叶林为研究对象，分析了森林群落林隙的大小结构、形成方式及林隙形成木（GM）的结构特征。

This paper studied the size structure and formation pattern of gaps and the characteristics of gap makers ( GM ) in subalpine dark coniferous forests in Wolong Giant Panda Nature Reserve , Sichuan Province , China .

2.3个森林群落OL和MS的细菌和真菌rDNA基因拷贝数也随土壤冻结-融化过程表现出先降低后升高的变化趋势，以土壤冻结后最低。

As the soil freezing and thawing processes , the bacterial and fungal rDNA copy numbers showed a decrease and then increase trend in the OL and MS , and the lowest values were observed in the soil freezing stage .

河岸带森林群落建群种的个体年龄及其胸径关系呈现出显著正线性相关趋势，且其年龄结构沿海拔梯度也均呈现出倒J型分布。

The relationship between the individual age and DBH of the constructive species took on markedly positive linear correlation trend , and the age class structures all took on reversed " J " shape in the riparian forest communities along an altitudinal gradient , too .

采用2×2列联表的Fisher精确检验、Pearson相关系数和Spearman秩相关系数检验研究山西省历山自然保护区猪尾沟森林群落树种种间关系。

The interspecific relationships of the main tree species in the forest communities were studied using Fisher 's exact test for a 2 × 2 contingency table , Pearson 's correlation coefficient , Spearman 's rank correlation coefficient .

主要研究结果如下：（1）以植物重要值、Simpson指数、Shannon-Wiener旨数、Pielou指数以及Sorenson相似性指数，对紫金山6个主要森林群落进行了研究。

Followings are the main results . ( 1 ) The important value , Simpson index , Shannon-wiener index , Pielou evenness index and Sorenson similarity coefficient were applied to study the main forest communities in the Purple Mountain .

太行山南段森林群落物种多样性研究

Species Diversity of Forest Communities in Southern Taihang Mountains , Shanxi

雾灵山国家自然保护区森林群落物种多样性研究

Study on species diversity of forest in Wuling Mountain Natural Reserve

火烧对森林群落的植物多样性影响不大。

Effect of the fire on plant diversity was very slight .

西双版纳不同热带森林群落土壤表层的细根年动态

Fine root dynamics of several types of tropical communities in Xishuangbanna

中国北方几种主要森林群落表土花粉组合特征研究

Surface pollen assemblages of some major forest types in northern China

沈阳城市森林群落的树种组合选择

Selection of tree species composition in Shenyang 's urban forest communities

森林群落同期发生演替的预测模型及其应用

Predicting Model of Concurring Succession in Forestry Community and Its Application

香港岛黄桐森林群落分析

A community analysis of Endospermum chinense forest , Hong Kong Island

城市森林群落枯落物层中重金属的含量与储量

The Content and Storage of Heavy Metals in Urban Forests Litter

闽北森林群落物种多样性的可塑性面积单元问题

The modifiable areal unit problem of species diversity in the forest

香港岛森林群落的聚类与排序

Cluster analysis and ordination of forest communities on Hong Kong Island

鼎湖山森林群落分析&Ⅷ生态优势度

Analysis on Forest Communities of Dinghushan & ⅷ Ecological dominance

实验表明，四种森林群落下土壤的透水性能良好。

The results showed that the penetrability of the soil was good .

雾灵山自然保护区森林群落的聚类与排序

Cluster and ordination of the forest communities in Wuling Mountain natual reserve

福建南平市森林群落类型

Community forms of forest in Nanping area , Fujian Province

曲阜孔林暖温带森林群落生殖物候初探

Reproductive Phenology of Warm Temperate Forest Community in Confucius Cemetery , Qufu

中国城市森林群落结构研究

Research Advance in Community Structure of Urban Forest in China

湖南省4种森林群落土壤氮的矿化作用

Net nitrogen mineralization in soils under four forest communities in Hunan Province