The research mainly focuses on improving the effect of crop-climate regionalization and promoting perfect meteorological service. Based on a large sample of metorological data and chemical composition contents of tobacco leaf, the dynamic climate zoning evaluation of tobacco planting was accomplished by improving quantificational estimate criterion about climatic suitability in tobacco planting, constituting qualificationally-graded evaluation criteria about the effects of meteorological condition on tobacco ingredients, subtly simulating and calculating the geographical distribution of essential meteorological elements with the support of GIS software. With a view to speaking concisely and clearly, two typical years with different climates were taken as examples to demonstrate the two refined dynamic regionalization estimates considering mainly the temporal and spatial changes of meteorological conditions. On one hand, the paper carried out climate-suitability zoning evaluation, in which the proportion of each suitability-grade subarea for the two typical years was compared with the zoning results of the climatic mean in Yunnan. On the other hand, the zoning maps of the relative change grades for two chemical ingredients of tobacco between the two typical years were given. Here, just to speak the results of the climate-suitability zoning: in comparison with 1994, the most appropriate area for tobacco-planting climate in 2008 was decreased by 40.1% and fitting zoning area was reduced by 21.7%, but the second suitable zoning area was increased by 1.9% and not-suitable zoning area increased by 35.6%. These analytical results were based on the fact that the illumination condition during later period of tobacco growing season in 1994 was much better than that in 2008. As a whole, the results of both of the two divisional methods were consistent with the routine analytical results based on data from representative stations of tobacco-planting areas. The paper showed the climatic characteristics of the two typical years in different regions and their influences on tobacco-planting suitability and tobacco quality. By combining two dynamic regionalization evaluations together, it provided some guides to the tobacco production in Yunnan and was helpful to further studies on crop-climate regionalization and meteorological service.
HUANG Zhong-yan
. Dynamic area-partition evaluation of flue-cured tobacco planting climates in Yunnan based on GIS[J]. GEOGRAPHICAL RESEARCH, 2011
, 30(8)
: 1439
-1448
.
DOI: 10.11821/yj2011080010
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