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A method is introduced in this paper to study the effect of future climatic change on the economy. The researchers determine
the economic output of climate change from historical data, and provide a method to quantitatively predict economic output
of climate change by an economic-climatic model. A historical reciprocating examination is used to analyze output data for
various crops in eight agricultural areas in China and meteorological data from 160 observatories in China from 1980 to 2000.
The results show that the methods used are reasonable to a certain extent and good in application. 相似文献
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Construction of a novel economy-climate model 总被引:1,自引:0,他引:1
CHOU JieMing DONG WenJie YE DuZheng 《科学通报(英文版)》2007,52(7):1006-1008
An attempt has been made to construct a novel economy-climate model by combining climate change research with agricultural economy research to evaluate the influence of global climate change on grain yields. The insertion of a climate change factor into the economic C-D (Cobb-Dauglas) production function model yields a novel evaluation model, which connects the climate change factor to the eco-nomic variation factor, and the performance and reasonableness of the novel evaluation model are also preliminarily simulated and verified. 相似文献
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Perfluorinated compounds in milk,milk powder and yoghurt purchased from markets in China 总被引:1,自引:0,他引:1
The exposure to perfluorinated compounds (PFCs) through the diet for humans is of great concern. Among the diet, dairy products are in great demand. This paper reports the study on the levels of 9 perfluorinated acids and 2 fluorotelomer acids in milk, milk powder and yoghurt purchased from Chinese markets from 2008 to 2009. The analytes were quantitated by high performance liquid chromatography/electrospray tandem mass spectrometry (HPLC-ESI-MS/MS). In milk samples, perfluoroheptanoic acid (PFHpA) and perf... 相似文献
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Perfluorooctane sulfonate (PFOS) and other fluorochemicals in viscera and muscle of farmed pigs and chickens in Beijing,China 总被引:2,自引:0,他引:2
Eleven perfluorinated compounds (PFCs) were determined in tissue samples from farmed pigs and chickens (n=143) that were purchased in Beijing in March 2009. The total PFCs mean concentration was the highest in pig liver (3.438 ng g–1 wet weight (ww)), followed by pig kidney (0.508 ng g–1 (ww)), pig heart (0.167 ng g–1 (ww)), chicken liver (0.098 ng g–1 (ww)), chicken heart (0.050 ng g–1 (ww)), pork loin (0.018 ng g–1 (ww)), and chicken breast (0.012 ng g–1 (ww)). Among the PFCs analyzed, perfluorooctane sulfonate (PFOS) was the predominant compound in viscera and muscle of farmed pigs and chickens. In addition, a strong linear correlation (r = 0.932) was observed between the concentrations of PFOS and perfluoroundecanoic acid (PFUnDA) in pig liver. Our preliminary conclusion is that there is little potential risk of exposure to PFCs via the consumption of these products in Beijing. 相似文献
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