The coupled effect of climate change and LUCC on meteorological drought in a karst drainage basin, Southwest China.

In terms of interannual changes in land categories, the areas of cultivated land and grassland showed a decreasing trend (−46.17 km2/10a, 2010–2020 s; −56.39 km2/10a, 1970–1980 s), while the areas of other land categories showed an increasing trend.

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The drought frequency ranged from 0.35 to 0.39, generally showing a decreasing trend from southwest to northeast.

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The spatial distribution of evapotranspiration was relatively complex compared to rainfall and temperature, with an overall trend of strong–weak alternation in winter and summer and a north–south decrease in the annual average and in spring and autumn.

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