The ecological footprint （EF） model has received much attention as an assessment indicator for sustainable development in recent years. Firstly, the temporal changes of domestic timber production, imports and export...The ecological footprint （EF） model has received much attention as an assessment indicator for sustainable development in recent years. Firstly, the temporal changes of domestic timber production, imports and exports in China were analyzed from 1973 to 2003, the analysis results showed an apparent fluctuation in timber production during 1973-1995 but a decreasing trend during 1995-2002, an increasing trend in timber imports since 1995 especially after the implementation of the Natural Forest Protection Project （NFPP）, an decreasing trend year by year in timber exports since 1995. Secondly, this paper presented a time series analysis of actual forest area demand in the sustainable yield and production approach in China from 1973 to 2003, which includes both import and export forest area demand. The results showed the actual forest area demand simulated from the sustainable yield approach was slightly higher than that from the production approach during 1978-1988 and a little lower during 1989-2003; however, the actual forest area demands simulated by these two model approaches were larger than calculations that expressed in conventional forest EF. Meanwhile, the results indicated the forestry development in China during 1978-1988 was unsustainable due to overexploitation of forest stocking volumes, and China＇s forestry moved toward sustainable development since 1989 because forest resources are exploited at lower rates than they are regenerated. However, compared to forestry developed countries, the forestry development capacity in China is still lower. Finally, based on the model results we analyzed the relationships between forestry EF and the key policies, including trade policy, economic policy and forest conservation programs. In addition, several suggestions about reducing forestry EF and enhancing sustainable forestry development in China are given.展开更多
This field study in AI aqeb town and its surroundings is a result of joint research between two scientific fields： anthropology and architecture, where the researchers interested in the local community in terms of so...This field study in AI aqeb town and its surroundings is a result of joint research between two scientific fields： anthropology and architecture, where the researchers interested in the local community in terms of social, stability method, patterns of production and its transformations, as well as in physical culture for population in traditional, heritage and modern housing, and the reason to choose AI aqeb is to test the stability of the nature of pastoral groups in A1 aqeb basin and valley which are available on pastures and water sources and the remains of ancient centers of human settlement which provides building materials to create traditional dwellings made up of basalt stones and mud where the researcher use the field surveys methodology in the target area through field trips and description of heritage sites and architectural field studies methodology in terms of description, analysis and measuring and drawing. And study populations and pastoral aspects, features of the surface and material evidence. The Bedouin human interacts with its environment depending on its own style in simple techniques to meet his basic needs of physical, cultural and the need for shelter and housing.展开更多
基金This paper was supported by National Natural Science Foundation of China (70373044&30470302) and Rejuvenation Northeast Program of CAS
文摘The ecological footprint （EF） model has received much attention as an assessment indicator for sustainable development in recent years. Firstly, the temporal changes of domestic timber production, imports and exports in China were analyzed from 1973 to 2003, the analysis results showed an apparent fluctuation in timber production during 1973-1995 but a decreasing trend during 1995-2002, an increasing trend in timber imports since 1995 especially after the implementation of the Natural Forest Protection Project （NFPP）, an decreasing trend year by year in timber exports since 1995. Secondly, this paper presented a time series analysis of actual forest area demand in the sustainable yield and production approach in China from 1973 to 2003, which includes both import and export forest area demand. The results showed the actual forest area demand simulated from the sustainable yield approach was slightly higher than that from the production approach during 1978-1988 and a little lower during 1989-2003; however, the actual forest area demands simulated by these two model approaches were larger than calculations that expressed in conventional forest EF. Meanwhile, the results indicated the forestry development in China during 1978-1988 was unsustainable due to overexploitation of forest stocking volumes, and China＇s forestry moved toward sustainable development since 1989 because forest resources are exploited at lower rates than they are regenerated. However, compared to forestry developed countries, the forestry development capacity in China is still lower. Finally, based on the model results we analyzed the relationships between forestry EF and the key policies, including trade policy, economic policy and forest conservation programs. In addition, several suggestions about reducing forestry EF and enhancing sustainable forestry development in China are given.
文摘This field study in AI aqeb town and its surroundings is a result of joint research between two scientific fields： anthropology and architecture, where the researchers interested in the local community in terms of social, stability method, patterns of production and its transformations, as well as in physical culture for population in traditional, heritage and modern housing, and the reason to choose AI aqeb is to test the stability of the nature of pastoral groups in A1 aqeb basin and valley which are available on pastures and water sources and the remains of ancient centers of human settlement which provides building materials to create traditional dwellings made up of basalt stones and mud where the researcher use the field surveys methodology in the target area through field trips and description of heritage sites and architectural field studies methodology in terms of description, analysis and measuring and drawing. And study populations and pastoral aspects, features of the surface and material evidence. The Bedouin human interacts with its environment depending on its own style in simple techniques to meet his basic needs of physical, cultural and the need for shelter and housing.
