Understanding the distribution and patch characteristics of Spartina alterniiflora is an important prerequisite for the prevention and control of S.alterniflora.The distribution and patch characteristics of S.alterniflora in Jiangsu province were analyzed by combining high-resolution remote sensing image interpretation with field verification.The results showed that S.alterniflora in Jiangsu province was distributed on both sides of the coastal muddy mudflat and ribbon ditches,with area of 24 441.88 hm2,including 1 341.84 hm2 in Lianyungang,15 523.84 hm2 in Yancheng and 7 576.20 hm2 in Nantong.Through the study on the evaluation indicators of S.alterniflora patch distribution characteristics,it was found that S.alternifiora gathered in large areas in the mudflat area in the central and southern coastal areas of Yancheng,which is suitable for large-scale mechanical operations.There were a large number of small fragmented patches scattered in the central coastal areas of Nantong,which had a great risk of diffusion.S.alterniflora in Jiangsu province is mainly distributed in muddy mudflat,and more than half of which is distributed in protected areas,which is difficult to control.This study provides a scientific basis for applying scientific governance methods tailored to local conditions and accurately carrying out the management and prevention of S.alterniflora.
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