物种多样性

Based on the data collected from six sample plots in Jiulongshan Natural Reserves of Zhejiang Province, the community structure, biodiversity index, distribution pattern and age structure of Diospyros glaucifolia community were analyzed.

在对浙江九龙山自然保护区内的粉叶柿群落进行调查的基础上，分析了粉叶柿群落结构与物种多样性以及粉叶柿种群结构与分布格局等特征。

Bird species diversity on an Andean elevational gradient.

青海湖地区芨芨草群落特征及其物种多样性研究。

The relationship between weed invasion and intensity was analysed on sown pasture mixed by whiteclover and perennial ryegrass,and the preliminary results were that 1the number of invasive weeds ismainly dependent on grazing intensity;2the trend of species diversity was successively increase-decrease-increase when the grazing intensity is increase;3 principal invasion weed species are Lysimachiahemsleyana, Eragrostis nigra, etc,8 species;4the sown pasture in question is pioneer stage of the recoverysucce...

本文分析了白三叶草十多年生黑麦草混播人工草地上杂草入侵与放牧强度之间的关系，得出如下初步结论：1）杂草入侵的种数主要决定于放牧强度；2）α物种多样性随放牧加重而有增－减－增的趋势；3）入侵的主要杂草种为点腺过路黄等8个种；4）所论人工草地都处在恢复演替的先锋阶段，因而草地退化的进程还是能予以遏制的。

Floristic composition, physiognomy, species diversity and the possible succession of the community were analyzed.

群落进行物种多样性测定，并分析了群落的种类组成、外貌、演替等。

Galliformes, birds, species diversity, endemic species, conservation, China

中文关键字：鸡形目，鸟类，物种多样性，特有种，保护，中国

The mountains and its plant region form its distributionbackbone,the heat and water condition in winter is one of the important factors and thetopography and geomorphy makes the distribution patterns complicated.

1在秦岭、淮河以北地区：植物区系的空间变化奠定了区域内森林群落植物物种多样性为纬向方向的空间变化格局。

In the soil, the species diversity index of germinative seed declined gradually with increasing soil depth.

随土壤深度增加，种子的种类和物种多样性指数均逐渐减小。

Gleditsia heterophylla ; richness indices ; evenness indices ; species diversity indices ; community type and structure

野皂荚；丰富度指数；均匀度指数；物种多样性指数；群落类型和结构

On the basis of investigation data collected from 20 plots of the fixed dunes and the semi-fixed dunes in Wulanbuhe desert characteristics of species diversity and spatial distribution pattern of Hedysarum scoparium population were investigated.

根据乌兰布和沙漠固定沙丘和半固定沙丘20个样方的调查数据，对不同生境中花棒群落物种多样性及其种群空间分布格局进行了研究。

The analysis of existing insect diversity showed that there are species of the common insects, except Coleoptera and Hemiptera, there are no more than 20 species among the other 9 orders of the insect species, and the index of species Shannon-wiener is low.

昆虫物种多样性分析显示：Shannon-Wiener指数较低，该区常见昆虫种类较少，除鞘翅目和半翅目昆虫外，其它9个目的昆虫种类匀不超过20个种类。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。