Brown eared-pheasant Crossoptilon mantchuricum is endemic to China, an d mainly occurs in Luliang Mountains of Shanxi, Xiaowutai of Hebei and Huanglong of Shaanxi. Reintroduction of Brown eared pheasant was carried ou...Brown eared-pheasant Crossoptilon mantchuricum is endemic to China, an d mainly occurs in Luliang Mountains of Shanxi, Xiaowutai of Hebei and Huanglong of Shaanxi. Reintroduction of Brown eared pheasant was carried out from April t o December in 2000. According to the criterions of release site selection in Gui delines for Reintroductions of IUCN, and habitat selection of Brown eared pheasa nt, Kuantan forestry in Wutaishan Mountains of Shanxi Province was selected as t he release site. Of the 8 released individuals, 5 wild individuals were captured in winter in Luyashan Nature Reserve of Shanxi Province, and 3 were offsprings of captive-reared individuals. Transmitters were attached when the 8 individua l s were released. Overall, 6 individuals survived for at least 1 month, and the l ongest time for survival was 155 days, except that one was confirmed as having b een killed by a raptor on the second day and one was lost on the eighth day afte r release. All moved away from the release site after release and established st able home ranges in different sites after 10 days, respectively. In early May, t he individuals again dispersed to establish new home ranges. The wandering dist ance and days of the captive individuals were longer and the home range size wer e larger than that of the wild birds, which resulted from the weak adaptability to new habitat for the captive individuals, such as recognizing and fetching foo d. For wild individuals, the second wandering distance was longer than the first . We believe the difference was related to looking for partners. After wandering , individuals established stable home ranges in different sites .展开更多
A new distributed fusion method of radar/infrared （IR） tracking system based on separation and combination of the measurements is proposed by analyzing the influence of rate measurement. The rate information separat...A new distributed fusion method of radar/infrared （IR） tracking system based on separation and combination of the measurements is proposed by analyzing the influence of rate measurement. The rate information separated from the radar measurements together with measurements of IR form a pseudo vector of IR, and the corresponding filter is designed. The results indicate that the method not only makes a great improvement to the local tracker＇s performance, but also improves the global tracking precision efficiently.展开更多
文摘Brown eared-pheasant Crossoptilon mantchuricum is endemic to China, an d mainly occurs in Luliang Mountains of Shanxi, Xiaowutai of Hebei and Huanglong of Shaanxi. Reintroduction of Brown eared pheasant was carried out from April t o December in 2000. According to the criterions of release site selection in Gui delines for Reintroductions of IUCN, and habitat selection of Brown eared pheasa nt, Kuantan forestry in Wutaishan Mountains of Shanxi Province was selected as t he release site. Of the 8 released individuals, 5 wild individuals were captured in winter in Luyashan Nature Reserve of Shanxi Province, and 3 were offsprings of captive-reared individuals. Transmitters were attached when the 8 individua l s were released. Overall, 6 individuals survived for at least 1 month, and the l ongest time for survival was 155 days, except that one was confirmed as having b een killed by a raptor on the second day and one was lost on the eighth day afte r release. All moved away from the release site after release and established st able home ranges in different sites after 10 days, respectively. In early May, t he individuals again dispersed to establish new home ranges. The wandering dist ance and days of the captive individuals were longer and the home range size wer e larger than that of the wild birds, which resulted from the weak adaptability to new habitat for the captive individuals, such as recognizing and fetching foo d. For wild individuals, the second wandering distance was longer than the first . We believe the difference was related to looking for partners. After wandering , individuals established stable home ranges in different sites .
基金supported by the National Natural Science Foundation of China (60574022).
文摘A new distributed fusion method of radar/infrared （IR） tracking system based on separation and combination of the measurements is proposed by analyzing the influence of rate measurement. The rate information separated from the radar measurements together with measurements of IR form a pseudo vector of IR, and the corresponding filter is designed. The results indicate that the method not only makes a great improvement to the local tracker＇s performance, but also improves the global tracking precision efficiently.
