Based on the theory of geo-economy,under the new situation of global economy,information network and China’s entry into WTO,also with the holding of APEC (in 2001) and the International Exposition in the near future,...Based on the theory of geo-economy,under the new situation of global economy,information network and China’s entry into WTO,also with the holding of APEC (in 2001) and the International Exposition in the near future,the Changjiang (Yangtze) River Delta is striding toward the spectacular international multi-polar situation and becomes one of core regions with high-speed development. Facing the ocean and world all along,leading the progressive tides of the age and scintillating the splendor of the nation,she does advance with time. Through a long period of irrigation projects construction and intensive operation of lands in previous agricultural society,the artificial wetland ecosystem with a positive cycle had ever been formed in this region. At present,environmental pollution and urban expansion resulted from post-industrialization are being rectified. The delta will be the paradigm of industrial and agricultural modernization along the sustainable development road. With the rapid development of urbanization,she has been one of the regions with the highest density population and high urbanization level. Taking the Changjiang River estuary and the Hangzhou Bay as two parts,she is continuously strengthening and adjusting her interior structure,expanding mothball space and constructing the oriental modern "logistics center" to link the whole world. The butterfly-style urban system of the Changjiang River Delta is flying,probably engendering earthshaking "butterfly effect".展开更多
The paper expounds the characteristics of the verticaldistribution of agrotopoclimatic resources in the warm sectors of the Three Gorges area of theChangjiang (Yangtze) River, sets up models of vertical distribution o...The paper expounds the characteristics of the verticaldistribution of agrotopoclimatic resources in the warm sectors of the Three Gorges area of theChangjiang (Yangtze) River, sets up models of vertical distribution of resources, and make a vertical division of the agrotopoclimate. Mean temperature presents a linear decrease with increasing altitude. In general, the mean annual maximum temperature and the mean annual munimum temperature decrease with the altitude increase especially, the absolute minimum temperature presents an indictal decline. Days of high temperature decrease with the altitude increase and days of low temperature in reverse. Accumulated temperature and days of agricultural threshold temperature have negative relation with the height. Both annual sunshine hours and the sunshine hours between April and October present a linear decrease with increasing altitude. The precipitation in sectors above 300m increases with increasing altitude, but the precipitation in sectors below 300m goes in reverse. Annual change of precipitation has typical characteristics of East Asia monsoon climate with two peaks. In lower warm sectors the aridity index decreases with increasing altitude while in upper sectors it increases with the altitude Increase. Nine indices of vertical division are selected to make a quantitative division ofagrotopoclimate.展开更多
文摘Based on the theory of geo-economy,under the new situation of global economy,information network and China’s entry into WTO,also with the holding of APEC (in 2001) and the International Exposition in the near future,the Changjiang (Yangtze) River Delta is striding toward the spectacular international multi-polar situation and becomes one of core regions with high-speed development. Facing the ocean and world all along,leading the progressive tides of the age and scintillating the splendor of the nation,she does advance with time. Through a long period of irrigation projects construction and intensive operation of lands in previous agricultural society,the artificial wetland ecosystem with a positive cycle had ever been formed in this region. At present,environmental pollution and urban expansion resulted from post-industrialization are being rectified. The delta will be the paradigm of industrial and agricultural modernization along the sustainable development road. With the rapid development of urbanization,she has been one of the regions with the highest density population and high urbanization level. Taking the Changjiang River estuary and the Hangzhou Bay as two parts,she is continuously strengthening and adjusting her interior structure,expanding mothball space and constructing the oriental modern "logistics center" to link the whole world. The butterfly-style urban system of the Changjiang River Delta is flying,probably engendering earthshaking "butterfly effect".
文摘The paper expounds the characteristics of the verticaldistribution of agrotopoclimatic resources in the warm sectors of the Three Gorges area of theChangjiang (Yangtze) River, sets up models of vertical distribution of resources, and make a vertical division of the agrotopoclimate. Mean temperature presents a linear decrease with increasing altitude. In general, the mean annual maximum temperature and the mean annual munimum temperature decrease with the altitude increase especially, the absolute minimum temperature presents an indictal decline. Days of high temperature decrease with the altitude increase and days of low temperature in reverse. Accumulated temperature and days of agricultural threshold temperature have negative relation with the height. Both annual sunshine hours and the sunshine hours between April and October present a linear decrease with increasing altitude. The precipitation in sectors above 300m increases with increasing altitude, but the precipitation in sectors below 300m goes in reverse. Annual change of precipitation has typical characteristics of East Asia monsoon climate with two peaks. In lower warm sectors the aridity index decreases with increasing altitude while in upper sectors it increases with the altitude Increase. Nine indices of vertical division are selected to make a quantitative division ofagrotopoclimate.