ANALYSIS OF THE ENVIRONMENT FEATURE OF BREEDING AREA AND ENDANGERED FACTORS OF RED-CROWNED CRANE IN CHINA

1 POPULATION STATUS AND DISTRIBUTION OF RED-CROWNED CRANE IN CHINAAccording to aerial survey, the number of Red-crowned Crane(Grus japonensis) is about 700 in breeding areas of China in 1981－1984, accounting for 65％of total numbers in the world (LI et al., 1987; MAet al., 1987; MA, 1987; FENG et al., 1985). In August 1992, the international symposium of crane in the world was convened in Calgary, Canada. The number of the crane was estimated accurately. There w…

Analysis of the environment feature of breeding area and endangered factors of red-crowned crane in China

Red-crowned Crane (Grus japonensis), a kind of endangered large-scale wader, is one of valuable and rare birds in the world. It has been indexed in China Red Data Book of Endangered Animals (Aves), China Data Book of Major Protection Wild Animals, World Red Data Book of Birds, State Trade Protocol of Endangered Wild Plants and Animals Species. The paper studies the amount, distribution, habit, growth and habitat of Red-crowned Crane in China in detail, systematically analyses the ecological environment feature of Red-crowned Crane breeding area, including the vegetation feature, the vertical distribution law of absolute humidity and temperature, some carnivorous food and herbivorous food for Red-crowned Crane. At present, the ecological environment of breeding area has been destroyed seriously by human activity. The area of marshland is reduced rapidly. A large area of reeds has been disappeared. The survival of Red-crowned Crane is threatened greatly. So it’s necessary to maintain the biodiversity of breeding area in order to protect Red-crowned Crane.