物种多样性

为研究封育对不同退化山地草甸物种多样性的影响，以C。

In order to study the effects of enclosure on species diversity of degraded upland meadow , C.

主要研究内容包括：①植物物种多样性：不同植被群落的物种丰富度（S）、多样性指数（H）和均匀度（J）；

The mainly investigated contents were as follows : ( 1 ) Species diversity analysis : Species richness , Brillouin index of species diversity and even degree .

达特穆尔大约有1000匹马驹，它们为该地区的物种多样性作出了极大的贡献。

Dartmoor has 1,000 or so ponies , who play a critical role in creating the diversity of species in this area .

冬季越冬期56种，共34707只，密度为118.32只／ha。冬季鸟类群落的物种多样性和结构稳定性大于春季。

While in winter , 56 species of 34,707 birds was observed in the same area , the density was 118.32 ind.

对防护林草本层物种多样性指数与土壤肥力因子的关系研究表明：影响草本层物种多样性的主要因子是土壤PH值，其次是土壤全磷含量。

Study on the relationship between soil fertility properties and species diversity in grass layer showed that the main factor affecting species diversity was soil PH , then was the soil total phosphorus .

同一层次的物种多样性指数D和H′虽然数值不同，但在不同阶段狼牙刺群落有基本一致的趋势，灌木层物种多样性指数基本上随恢复时间的增加而增加；

D and H ′ of species diversity indexes of identical layer are different , but it has basically the same tendency in different growth stages of Sophora davidii community . Species diversity indexes of shrub layer increase with increasing time .

世界遗产地和生物圈保护区的概念都是在联合国教科文组织（UNESCO）主持下制定的，主要目的都在于保护世界的物种多样性和生态系统；

The two concepts of world heritages and Biosphere reserves come under the aegis of UNESCO . Their objectives are mainly to conserve species diversity and ecosystems of the world .

就乔木（DBH＞2.5cm）而言，3个样地的物种多样性和均匀度指数从1982年至1994年都已增长。

For trees ( DBH > 2.5 ), species diversity and evenness indices increased from 1982 to 1994 in all the three forests .

本文主要研究了塞罕坝自然保护区植被类型、群落结构多样性和物种多样性、维管植物区系特征、生物多样性保护与经济价值评价及3S技术在植被研究中的应用。

In this paper , The diversity of the vegetation type , community , species and the characteristics of the vascular plants flora , the bio-diversity conservation and evaluation on economic value has been studied systematically .

封禁后各项经营措施下的林下植被的Simpson物种多样性指数、Pielou均匀度指数和物种丰富度指数都有所提高。

The undergrowth vegetation species diversity index of Simpson index , Pielou evenness index and species richness index are all improved after the management measures take in to implementation .

运用α多样性指数和β多样性指数对炼山与不炼山处理南酸枣Choerospondiasaxillaris人工林林下植被物种多样性进行横向与纵向比较研究。

The α diversity indexes and β diversity indexes were used to study the species diversity of undergrowth in the Choerospondias axillaris plantations .

土壤种子库物种多样性的变化表现为，随着演替的进行，优势度指数逐渐减小，而丰富度指数、均匀性指数和Shannon-Wiener多样性指数逐渐增大，恢复到32年时达到最大。

Along with the restoration stages , the dominance index decreased while the species richness index , evenness index and Shannon-Wiener diversity index increased gradually and come to the highest value in the plots after 32-year restoration .

调查了岷江上游20a龄油松人工林样方17个（20m×20m），测定了油松生长参数、林下植被的植物物种多样性和盖度，以分析油松生长和群落结构变化的密度效应。

Seventeen plots ( 20 m × 20 m ) of 20-year-old Chinese pine ( Pinus tabulaeformis ) plantations were investigated for tree growth parameters , plant species diversity , and coverage of shrub and herbaceous layers in the upper reaches of the Min River in southwestern China .

分析红豆树（Ormosiahosiei）百年以上老林分的11个乔木层树种的相对优势度、物种多样性、均匀度、生态位宽度、生态位重叠度等指标。

The relative dominant degrees , species diversity , even degrees , niche width , niche overlapping degrees , and other indicators were analyzed by the arbor trees of 11 stories in the hundred-year-old virgin forest of Ormosia hosiei Hemsl . et Wils .

对物种多样性的影响。

Influence on the diversity of inheritance , ecosystem and species .

石阡河鱼类物种多样性研究

Study on the Species Diversity of Fish in the Shiqian River

植物物种多样性指数较高。

The index of plant diversity of the community was higher .

高榕小蜂群落结构及物种多样性的初步研究

Community structure and species diversity of fig wasps from Ficus altissima

对节肢动物物种多样性进行调查编目。

The species diversity is investigated and its list is made .

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

贵州兽类物种多样性现状及保护对策

Situation and conservation strategy of mammal species diversity in Guizhou province

滇南热带植物物种多样性的迁地保护

The ex situ conservation of tropical plant diversity in Southern Yunnan

封育条件下云南退化山地草甸物种多样性的研究

Species Diversity of Degraded Upland Meadow under Enclosure in Yunnan Province

北京东灵山地区森林的物种多样性和景观格局多样性研究

Studies on species and pattern diversities of the forest landscapes of

北京国家体育场周边趋光性昆虫物种多样性及优势度分析

Species diversity of phototactic insects around the National Stadium in Beijing

青海湖地区芨芨草群落特征及其物种多样性研究

Study on Achnatherum splendens community characteristics and species diversity around Qinghai Lake

山东曲阜地区蚂蚁群落结构及物种多样性研究

Community structure and species diversity of ant in Qufu , Shandong Province

采用丰富度和多样性指数进行群落物种多样性分析。

Species diversity analysis adopts species richness and Shannon-Wiener Index .

大亚湾潮间带软体动物的物种多样性初步研究

Species diversity of mollusc in intertidal zone , Daya Bay