| Climatic suitability of cotton and its spatial and temporal trend in Hebei Province |
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| DOI：10.7606/j.issn.1000-7601.2009.05.05 |
| Key Words: climatic suitability degrees spatial-temporal distribution Hebei Province |
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| Abstract: |
| As an important industrial crop for Hebei Province, cotton is more sensitive to climate compared with other crops.According to homogenizing principle, 25 stations in Hebei Province were chosen.With meteorological data, the cotton climatic suitability degrees and its spatial-temporal distribution in each development period were calculated and analyzed.The result indicated: the precipitation suitability degree was obviously lower than temperature suitability during the period from sowing to boll-opening of cotton, and it got to the smallest in sowing time and boll-opening time and the coefficient of variation was the largest.Sunshine suitability degree from sowing to boll-opening had no big change, but higher than that of temperature and precipitation.The change tendency of climatic suitability for many years was: temperature suitability degree showing slow rise, precipitation suitability degree showing slow drop, sunshine suitability degree dropping obviously, and the climate synthesis suitability degree being consistent with precipitation, in slow decline.The areas with high-value of precipitation suitability degree were distributed in the northern cotton planting regions, while the low-value areas in some part of Heilonggang basin;the areas with low-value temperature suitability degree were distributed in most part of Tangshan, while the high-value areas in Heilonggang basin;the areas with low-value sunshine suitability degree were distributed in western Mt.Taihang hill cotton region, while the high-value areas in the eastern regions. |
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