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Abstract Monitoring the planting area and growth status of rare medical herbs is a new direction of remote sensing application. Pseudo-ginseng, as a commercial and severe planted crop in Yunnan Province, has a significant influence on the regional land use and financial income. Thus, the accurate monitoring of the planting area and the trend of pseudo-ginseng is of vital importance. Based on the analysis of spectral and spatial features of the pseudo-ginseng plantation, an efficient method to extract the planting areas of pseudo-ginseng was proposed and its change was analyzed using multi-temporal remote sensing images. Experimental results demonstrated that the planting area of pseudo-ginseng in Wenshan and Honghe has kept grown from 2010 to 2015, especially from 2012 to 2014 with a rapid speed. However, the market price decreased because supply exceeds demand in this period. Compared to the market price, the planting area has a obvious lag effect. Furthermore, the pseudo-ginseng plantation is concentrated in the appropriate elevation gradients between 1400 and 2000 m, with the slope below 25°.
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Keywords
pseudo-ginseng
topographical factors
spatial-temporal variation
hysteresis quality
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Issue Date: 08 February 2018
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