Regional Features and Spatial Distribution of Fifty-Eight Ethnic Groups in Southwest China

Eco-environmental variability was the basis of ethnic diversity with a persistent influence on the regional development. The unique geographic conditions and multi-ethnic characteristics in southwest China were valuable for exploring sustainable development of ethnic regions. In this study, the regional features of distribution areas of ethnic groups in southwest China were analysed, and it was found that average altitude, slope, water coverage and water form ratio of each ethnic group differed apparently. Additionally, regional features of southern minorities were relatively stable, while those of northern minorities changed evidently from 1990 to 2010. Furthermore, taking the spatial coordinates and regional features as parameters, fifty-eight ethnic groups were clustered into six categories via spatial cluster analysis. Moreover, based on the county-level population data, the ethnic similarities in southwest China were identified by correlation analysis, and the results were in accordance with those of spatial cluster analysis but more detailed. In addition, the eco-environmental adaptability of various ethnic groups was discussed in terms of living and production as well as regional sustainable development. This research was of referential meaning for population settlement, natural resources utilization and biodiversity conservation in multi-ethnic regions

Regional Features and Spatial Distribution of Fifty-Eight Ethnic Groups in Southwest China

Eco-environmental variability was the basis of ethnic diversity with a persistent influence on the regional development. The unique geographic conditions and multi-ethnic characteristics in southwest China were valuable for exploring sustainable development of ethnic regions. In this study, the regional features of distribution areas of ethnic groups in southwest China were analysed, and it was found that average altitude, slope, water coverage and water form ratio of each ethnic group differed apparently. Additionally, regional features of southern minorities were relatively stable, while those of northern minorities changed evidently from 1990 to 2010. Furthermore, taking the spatial coordinates and regional features as parameters, fifty-eight ethnic groups were clustered into six categories via spatial cluster analysis. Moreover, based on the county-level population data, the ethnic similarities in southwest China were identified by correlation analysis, and the results were in accordance with those of spatial cluster analysis but more detailed. In addition, the eco-environmental adaptability of various ethnic groups was discussed in terms of living and production as well as regional sustainable development. This research was of referential meaning for population settlement, natural resources utilization and biodiversity conservation in multi-ethnic regions

Phylogeography of Apis cerana populations on Hainan island and southern mainland China revealed by microsatellite polymorphism and mitochondrial DNA

International audienceAbstractIn this study, we reexamined the patterns of divergence and phylogeographic structure among Apis cerana populations on Hainan island and southern mainland China. Analysis of 10 microsatellite loci from 12 geographically distinct A. cerana populations identified a total of 151 alleles, with a range of 7 to 24 at each locus. The level of genetic variation (observed heterozygosity) within each population ranged from 0.603 to 0.661, while variation within populations contributed most (93.78–98.84 %) of the molecular variance. Microsatellite data revealed three differentiated groups, one including all the mainland populations while the other two containing one of and the other three island populations, respectively. Severe genetic introgressions from mainland China into Hainan island were apparent, and these were characterized at both population and individual levels using combined analysis of microsatellites and mitochondrial DNA

Genetic variation and population structure of <i>Apis cerana</i> in northern, central and southern mainland China, based on <i>COXI</i> gene sequences

<p>The eastern honey bee (<i>Apis cerana</i>), a Chinese native bee species, plays an important role in local ecosystems and agriculture, as it pollinates flowering plants. In this study, we assessed the genetic variation and population structure of <i>A. cerana</i> using the mitochondrial sequences of cytochrome c oxidase subunit I (<i>COXI</i>). We collected samples from 11 provinces of China and also included previously-collected data from two provinces of southern China. A total of 1,518 sequences with a length of 760 bp in 51 <i>A. cerana</i> populations were analyzed. We found 111 haplotypes within these sequences, of which 78 haplotypes were newly-defined in this study. The star-like median-joining network revealed that the haplotypes found in this study were monophyletic. A large difference in genetic diversity was found, including a gradual decrease from southern to northern populations. The southern populations harbored most of the genetic diversity and should therefore be protected. We also found a significant genetic structure among the studied populations, and defined five populations as key conservation populations. These results could be valuable in making management and conservation strategies, and for a better understanding of the evolutionary history of <i>A. cerana</i> populations in China.</p

鄱阳湖湿地生态功能重要性分区/Zoning of ecological function importance for Lake Poyang wetlands[J]

在分析鄱阳湖湿地自然环境特征和湿地生态系统服务功能特征基础上,利用GIs技术,对鄱阳湖湿地范围进行界定,湿地面积为3886km2.基于湿地生态环境保护和社会经济发展总体要求,按照生态功能区划原理,对湿地进行生态功能重要性分区研究.根据湿地生态功能重要性评价结果将湿地分为极重要区、高度重要区、重要区、一般重要区四个区域,其面积分别是125km2,1387km2,2064km2和310km2.针对分区结果,文中提出了湿地生态保护对策与建议