Habitat pattern change of red-crowned cranes (Grus japonensis) in t he Liaohe Delta between 1988 and 1998 was analyzed with the help of Spatial Dive rsity Index based on remote sensing data and field investigation. Th...Habitat pattern change of red-crowned cranes (Grus japonensis) in t he Liaohe Delta between 1988 and 1998 was analyzed with the help of Spatial Dive rsity Index based on remote sensing data and field investigation. The result sho wed that the influence from human activities on the wetland habitat of red-crow ned cranes was prominent with the development of oil and agricultural exploitati on, and the habitat pattern of red-crowned cranes had been obviously changed by the human disturbance during the ten years. The areas with high Spatial Diversi ty values (SD≥0.65) and that with mid-high values (0.5≤SD< 0.65), which const ituted the main part of suitable habitat of red-crowned cranes,had reduced to 9142ha and 5576ha respectively, with the shrinking of natural land cover, such a s reed and Suaeda community. The habitat pattern became more fragmented, which w as caused by roads and wells during oil exploration. It was indicated that the s uitability and quality of habitat for red-crowned cranes in the Liaohe Delta we re degraded in the last decade. The results also showed that diversity index cou ld reflect the habitat suitability of red-crowned cranes quantitatively and des cribe the spatial pattern of the habitat explicitly. This study will provide a s cientific basis for habitat protection of red-crowned cranes and other rare spe cies in wetlands.展开更多
The disabled children are a special people; but we pay little attention to them. At the same time, we study the welfare of the disabled children very little. As many problems on the disabled children presented in fron...The disabled children are a special people; but we pay little attention to them. At the same time, we study the welfare of the disabled children very little. As many problems on the disabled children presented in front of people, their welfare are generally put forward. The proportion of the disabled children＇s welfare is relatively small in the social welfare system of china; paying attention to the disabled children＇s welfare of china; getting to know the present situation of the disabled children＇s welfare of china and establishing the disabled children＇s welfare pattern of china based the present situation of the disabled children＇s welfare of china will be good for the rescue of the disabled children of china. That can give them a hand to make them live in a good living environment. Improving and perfecting the system of the disabled children＇s welfare of china; safeguarding the rights and interest of the disabled children of china; forming a good social atmosphere; building a harmonious society and improve the level of civilization are the benefit of the new system.展开更多
文摘Habitat pattern change of red-crowned cranes (Grus japonensis) in t he Liaohe Delta between 1988 and 1998 was analyzed with the help of Spatial Dive rsity Index based on remote sensing data and field investigation. The result sho wed that the influence from human activities on the wetland habitat of red-crow ned cranes was prominent with the development of oil and agricultural exploitati on, and the habitat pattern of red-crowned cranes had been obviously changed by the human disturbance during the ten years. The areas with high Spatial Diversi ty values (SD≥0.65) and that with mid-high values (0.5≤SD< 0.65), which const ituted the main part of suitable habitat of red-crowned cranes,had reduced to 9142ha and 5576ha respectively, with the shrinking of natural land cover, such a s reed and Suaeda community. The habitat pattern became more fragmented, which w as caused by roads and wells during oil exploration. It was indicated that the s uitability and quality of habitat for red-crowned cranes in the Liaohe Delta we re degraded in the last decade. The results also showed that diversity index cou ld reflect the habitat suitability of red-crowned cranes quantitatively and des cribe the spatial pattern of the habitat explicitly. This study will provide a s cientific basis for habitat protection of red-crowned cranes and other rare spe cies in wetlands.
文摘The disabled children are a special people; but we pay little attention to them. At the same time, we study the welfare of the disabled children very little. As many problems on the disabled children presented in front of people, their welfare are generally put forward. The proportion of the disabled children＇s welfare is relatively small in the social welfare system of china; paying attention to the disabled children＇s welfare of china; getting to know the present situation of the disabled children＇s welfare of china and establishing the disabled children＇s welfare pattern of china based the present situation of the disabled children＇s welfare of china will be good for the rescue of the disabled children of china. That can give them a hand to make them live in a good living environment. Improving and perfecting the system of the disabled children＇s welfare of china; safeguarding the rights and interest of the disabled children of china; forming a good social atmosphere; building a harmonious society and improve the level of civilization are the benefit of the new system.
