关键词: 细菌鉴定, 细菌种群, 分离频率, 拮抗细菌, 水稻纹枯病

AbstractThe wetlands around the Dongting Lake were inhabited by Père David′s deer before its extinction in the wild. In preparation to restore a wild Père David′s deer populations in the Dongting Lake region, we inspected the Père David′s deer populations in the Tianezhou Reserve, Beijing Milu Park and Dafeng Milu Nature Reserve. We studied the available wetlands in the Yueyang Municipality, Changde Municipality and Yiyang Municipality, and selected Julinyuan of Hanshou County, Changde Municipality and Jichengyuan of the Huarong County, Yueyang Municipality as a potential reintroduction site for Père David′s deer. We studied the vegetations and sampled above ground biomass of plant in the two sites. We found the natural environments in Julinyuan and Jichengyuan similar to that of the Tianezhou Reserve. There are three Vegetation Type Groups and vascular plant of 75 families, 189 genera and 264 species in Jichengyuan. The habitat available for reintroduction of Père David′s deer in Jichengyuan is 2000 hectare, which can provide the reintroduced deer with 21158.4 tons of fresh plants, enough to support 1000 Père David′s deers. The natural vegetation rapidly recovered after the lands were abandoned and designated for wetland restoration. There are also three Vegetation Type Groups and vascular plants of 75 families, 189 genera and more than 200 species in Julinyuan. The habitat available for reintroduction of Père David′s deer in Julinyuan is 1703.1 hect are, which can provide reintroduced deer with 18 859.0 tons of fresh plants, enough to support 850 Père David′s deers. Judged by the climate, food resources and environmental carrying capacity,  Julinyuan and Jichengyuan are both suitable for reintroduction of Père David′s deer. We also discuss the human assisted survival strategies for Père David′s deer, such as guarantee living space, diseases prevention, habitat restoration, and population and habitat monitoring.

Key words: bacterial identification, bacterial species, isolation frequency, antagonistic bacteria, sheath blight of rice