Abstract:

Objective To explore the preliminary application of high resolution CBERS?02B images in detecting the Oncome?
lania snail habitats in lake and marshland regions. Methods The images with high resolutions were first fused from CBERS?02B
HR and CCD images，and then the potential snail habitats in Xingzi County of Jiangxi Province were extracted from high resolution
CBERS images and CCD images，respectively. A total of 2 000 validation points were randomly selected for comparing the differ?
ence of distribution of these points inside and outside of the extracted two snail habitats with the McNemar chi?square test. Re?
sults The areas of the two snail habitats extracted from high resolution and CCD images were 98.23 km2 and 94.89 km2，respec?
tively. The numbers of validation points in the two snail habitats were 255 and 248，respectively，and no significant difference was
found（ χ2 =177 9.52，P = 0.23）. Conclusion At large?scale studies，the ranges and areas of the two snail habitats extracted
from high resolution and CCD images are not significantly different.

Key words: Schistosomiasis；Oncomelania hupensis；CBERS?02B；Remote sensing；Lake and marshland region

摘要：

目的探讨高分辨率中巴资源卫星02B星（CBERS?02B）遥感图像在探测湖沼地区钉螺孳生地中的初步应用。方法将CBERS?02B星HR图像与CCD图像融合形成高分辨率遥感图像，并分别应用高分辨率中巴资源卫星遥感图像和CCD图像提取江西省星子县地区的潜在钉螺孳生地。在研究区域内随机抽取2 000个验证点，应用McNemar χ2 检验比较验证点在钉螺孳生地内外分布的差异。结果高分辨率中巴资源卫星遥感图像与CCD图像提取的星子县潜在钉螺孳生地面积分别为98.23 km2和94.89 km2，位于两者内的验证点数分别为255个和248个，差异无统计学意义（ χ2 = 1 779.52，P = 0.23）。结论在大尺度范围内，应用高分辨率中巴资源卫星遥感图像提取的钉螺孳生地与CCD图像提取钉螺孳生地范围和面积基本一致。

关键词: 血吸虫病；钉螺；中巴资源卫星02B星；遥感；湖沼地区