According to field investigation,the population of the black-necked crane (Grus nigricollus )is determined of 5000～6000 individuals distributed mainly through Qinghai-Xizang (Tibet) Plateau and Yunnan-Guizhou Plateau.Its extent of occurrence is more than 22×10⁵ Km² and area of occupancy is more than 5400 Km².Breeding area has been found in northern and west Tibet Plateau and wintering area in the middle valley of Tsangpo,parts of Yunnan-Guizhou Plateau and southern slope of Himalaya.The migratory routes are over the southeast Tibet Plateau.In wintering area,the Black-necked crane acts with family,same species group and mixed species group such as Common crane (Grus grus) and Bar-headed geese (Anser indicus).In breeding area,the Black-necked crane are separated  into no-breeding group and breeding pairs.Territory occupied by breeding pair may be a key to breeding successfully.This species is evaluated as a vulnerable (VU) species according to the endangred categories of IUCN (1994).

The origin of Chinese  cattle is very complex .There  are genetic  diversity    in  coat  color, body  states, karyotype,blood  protein  loci  of  Chinese cattle  breeds. The average heterozygosities of  6 coat color  loci and  6  blood protein loci  are 0.3144 and 0.4873 respectively in Chinese native cattle population ,   which  indicated  there is rich genetic diversity in Chinese native cattle population. The coefficient of gene differentiations of  6 coat color loci and  6 blood protein loci are 0.3404 and 0.095 respectively  in Chinese native cattle population ,which showed  34.04%  of  the  total  genetic variation  in coat color and  9.5% of the total genetic variation in  blood  protein  loci  are  caused  by  genetic  difference among breeds.  Most  of  the genetic diversity in Chinese cattle come from within every   breed. Conservation of  Chinese cattle genetic diversity must be  considered of not only the genetic diversity  conservation of the total  Chinese cattle population but also that of every cattle breed.

There are a great deal of euthermes which distribute widely in Yunnan Province.The euthermes can be divided into four types: chliarothermes,euthermes,acrothermes and hyperthermes. Cyanophytes in these euthermes are different in the types of population,and also their flora are similar to those of in the tropical and subtropical areas such as Xizang and Sichuan Provinces of China and India etc.In this paper, 89 species of thermal cyanophytes in Yunnan were studied. These species belong to 21 gerera,7 families, 4 orders and 3 classes. The structures of their population,  flora  and  distribution  as  well as the relationship between species diversity and the environmental factors were analysed and discussed.

Futian Mangroves and Birds National Nature Reserve of Shenzhen is composed of mangroves forest zone,fish ponds and low-lying land within sea wall,seabeach outside the mangroves forest zone,and land forest.Main wildlife are mangroves,other plants,birds,fishes,benthic macrofauna,plankton and insects.The biodiversity of each assemblage of wildlife and its change were discussed in this paper.

The species diversity index, evenness and richness of Fagus lucida communities are analysed. The results show that all these indexes well reflect the characters of communities, such as the type classification, structure and habitat. Meanwhile, they also reflect the particularity of composition and structure of the Fagus lucida community. Discussion on the distribution of species abundant shows that the community includes fewer dense species but more sparse species, and the abundance of these species has regularity. It is concluded that the quantitative analysis of species diversity index is significant to make a through study on the forest community.

The present paper deals with the species diversity feature of forest in Wuling Mountain Natural Reserve in Hebei Provice,China.The species diversity of 7 forest communities are measured.The results show that the species diversity index is 2.37～4.17.According to further research of the measured results,the use and the effect as well as the ecological meaning of the species diversity,ecological dominance and the evenness index are explored.

The relationships between ecotones and biodiversity have traditionally caught the interest of many ecologists. Widespread evidence and theoretical arguments indicate that the ecotones are characterized by high biological diversity.Management of the ecotones and  protection of their ecotonal biodiversity are important.

The knowledge of biosystematics provides a foundation for nature monitoring and conservation. As the concept of nature conservation is undergoing a shift from emphasizing protecting key species or typical ecosystems towards emphasizing protecting biodiversity on the earth, biosystematics will play a more prominent role in nature conservation.

This paper dealt with the significance of conservation of insect diversity,the basic characteristics of insect diversity in China,the main problems of China's insect diversity,and the strategies for conservation of insect diversity in China.It was pointed out that,some 1% of all the described insect species in China are major insect pests,and the majority of insects are either directly or indirectly beneficial or neutral in their relationship to human beings.Insects pollinate crop plants;provide food for other animal and products for human consumption;serve as natural control agents of other pests,including insects and weeds;and contribute to the environmental purification and scientific research.China is rich in species of insects,and possesses many rare and valuable groups because of its vast territory and complex habitata.As a result of the interference of human's activities,however,China's insect diversity has been facing destruction of the habitat,near extinction of the rare species,and decreasing in natural enemies.In order to conserve and utilize China's insect resources more sensibly and efficiently,the author put forward a series of rational strategies.

This paper briefly introduces present situation and prospects of marine biodiversity in China. Species diversity, genetic diversity, ecosystemic diversity, key species and their habitats are also reviewed. Looking into the future, the main goals are to promote the surveys and studies on marine biodiversity resources and to make marine biodiversity to serve for China sustainable utilization.

This paper reviews the results on public education in Gaoligongshan region,West Yunnan in July 1992 to May 1994.The region is  rich in biodiversity but threatened,and the local public is neither cherishing the nature nor understanding the conservation.We launched the conservation education  in order to save the region's natural resources.During education period,we concluded some important principles of education.The local public,through the action,not only  understand elementary knowledge of protecting the environment,but also know the sustained use of the natural resources benefits themselves and descendants,so they subscribe to control and select hunting forstabilizing the wildlife population,and change the method of cultivation such as swidden agriculture and plan to open up woods for safeguarding the natural forests.We,for the future education at the basic and in multinational area,put forward some suggestions in this report.