Bayan Obo deposit in Inner Mongolia,China is not only the largest Iron-LREE-niobium deposit known in the world but also a giant fluorite deposit.Banded and streaky fluorite-rich REE-iron ores,bastnasiteapatite -pyroxe...Bayan Obo deposit in Inner Mongolia,China is not only the largest Iron-LREE-niobium deposit known in the world but also a giant fluorite deposit.Banded and streaky fluorite-rich REE-iron ores,bastnasiteapatite -pyroxene-fluorite ores,high-Fe,REEs,and fluorite ores,monazite(bastnaesite)-fluorite(low-Fe, high REE) ores etc.are widely disseminated in the Main and the East ore bodies.In 1985,proven展开更多
Rose is a kind of favorite ornamental plant. This article briefly introduced the cultivation and the use of rose around the world both in ancient time and nowadays. Today, volatile oil becomes the mainstream of the ro...Rose is a kind of favorite ornamental plant. This article briefly introduced the cultivation and the use of rose around the world both in ancient time and nowadays. Today, volatile oil becomes the mainstream of the rose industry. People pay attention to the effect of volatile oil; meanwhile, they speed up their research on extracting volatile oil and the ingredients.展开更多
This article analyzes the importance of non use values in the management of natural resources with a model of imperfect competition.By constucting a framework of duopolistic exploiters,the incorporation of non use v...This article analyzes the importance of non use values in the management of natural resources with a model of imperfect competition.By constucting a framework of duopolistic exploiters,the incorporation of non use values based on self interest and altruistic motives appears to be significant for determining the degree of inefficiency caused by the problem of common property at the non cooperative Nash equilibrium.It is found that when the non use value placed by the altruist exploiter is bounded by that placed by the pure self interest exploiter,the effect of market power is dominated by the effect of common exploitation.In this case,the exploiters' harvesting strategy will response in the same direction to the change of each other's harvesting at the non cooperative Nash equilibrium.In contrast,when the non use value placed by the altruist is substantially larger or smaller than that placed by the self interest exploiter,one exploiter's increase in harvesting will lead to a decrease in harvesting of the other exploiter at the non cooperative Nash equilibrium.展开更多
This paper formulated the present characteristics, current status and the problems of agricultural natural China. Measures of preservation and strategy about exploitation of agricultural natural resources were put for...This paper formulated the present characteristics, current status and the problems of agricultural natural China. Measures of preservation and strategy about exploitation of agricultural natural resources were put forward, provide a scientific basis for the government to make policies .展开更多
文摘Bayan Obo deposit in Inner Mongolia,China is not only the largest Iron-LREE-niobium deposit known in the world but also a giant fluorite deposit.Banded and streaky fluorite-rich REE-iron ores,bastnasiteapatite -pyroxene-fluorite ores,high-Fe,REEs,and fluorite ores,monazite(bastnaesite)-fluorite(low-Fe, high REE) ores etc.are widely disseminated in the Main and the East ore bodies.In 1985,proven
文摘Rose is a kind of favorite ornamental plant. This article briefly introduced the cultivation and the use of rose around the world both in ancient time and nowadays. Today, volatile oil becomes the mainstream of the rose industry. People pay attention to the effect of volatile oil; meanwhile, they speed up their research on extracting volatile oil and the ingredients.
文摘This article analyzes the importance of non use values in the management of natural resources with a model of imperfect competition.By constucting a framework of duopolistic exploiters,the incorporation of non use values based on self interest and altruistic motives appears to be significant for determining the degree of inefficiency caused by the problem of common property at the non cooperative Nash equilibrium.It is found that when the non use value placed by the altruist exploiter is bounded by that placed by the pure self interest exploiter,the effect of market power is dominated by the effect of common exploitation.In this case,the exploiters' harvesting strategy will response in the same direction to the change of each other's harvesting at the non cooperative Nash equilibrium.In contrast,when the non use value placed by the altruist is substantially larger or smaller than that placed by the self interest exploiter,one exploiter's increase in harvesting will lead to a decrease in harvesting of the other exploiter at the non cooperative Nash equilibrium.
文摘This paper formulated the present characteristics, current status and the problems of agricultural natural China. Measures of preservation and strategy about exploitation of agricultural natural resources were put forward, provide a scientific basis for the government to make policies .
