Based on the growth rates of population, Gross Domestic Products (GDP) and agriculture productivity, the areas of deforestation were predicted in Jutp ani village, Chitwan district, Nepal by Area Production Model (AP...Based on the growth rates of population, Gross Domestic Products (GDP) and agriculture productivity, the areas of deforestation were predicted in Jutp ani village, Chitwan district, Nepal by Area Production Model (APM). Through the APM simulation in this study, all of forestland will be transferred into agricu ltural land in 2030 at the rate of 24% per year on the current productivity. And if the productivity of subsistence food crop is assumed to increase at the rate of 1%, the productivity of market crop and export crop increase at the rate of 2% annually, deforestation rate will decrease to 17% per year, but only 124 hm2 forest land will be left till 2038. The agriculture productivity is a very impor tant factor for the deforestation, so intensification of agriculture management is more important.展开更多
During the Great Faminein China in the early1960s, almost thirtymillion lives were lost. Asa result, Chineseleadershavebeen especially afraid offood shortages, which hasled to a misguided food policy and caused great ...During the Great Faminein China in the early1960s, almost thirtymillion lives were lost. Asa result, Chineseleadershavebeen especially afraid offood shortages, which hasled to a misguided food policy and caused great economic losses. The argument given by Mr. Lester R. Brown is misleading, and there isno food crisis in China. Food supply on the world markets is ample, and food prices have been declining over the past fifty years. For China, the cost of imported foodstuffs is less than one percent of its foreign exchange earnings. Maintaining a freefood marketismoreimportantthan having atotallyindependent domesticfood supply.展开更多
文摘Based on the growth rates of population, Gross Domestic Products (GDP) and agriculture productivity, the areas of deforestation were predicted in Jutp ani village, Chitwan district, Nepal by Area Production Model (APM). Through the APM simulation in this study, all of forestland will be transferred into agricu ltural land in 2030 at the rate of 24% per year on the current productivity. And if the productivity of subsistence food crop is assumed to increase at the rate of 1%, the productivity of market crop and export crop increase at the rate of 2% annually, deforestation rate will decrease to 17% per year, but only 124 hm2 forest land will be left till 2038. The agriculture productivity is a very impor tant factor for the deforestation, so intensification of agriculture management is more important.
文摘During the Great Faminein China in the early1960s, almost thirtymillion lives were lost. Asa result, Chineseleadershavebeen especially afraid offood shortages, which hasled to a misguided food policy and caused great economic losses. The argument given by Mr. Lester R. Brown is misleading, and there isno food crisis in China. Food supply on the world markets is ample, and food prices have been declining over the past fifty years. For China, the cost of imported foodstuffs is less than one percent of its foreign exchange earnings. Maintaining a freefood marketismoreimportantthan having atotallyindependent domesticfood supply.
