[1]袁宜,赵安,黄潮清.一种改良的基于RS/GIS技术的鄱阳湖区钉螺滋生地获取方法研究[J].江西师范大学学报(自然科学版),2014,(02):212-216.
 YUAN Yi,ZHAO An,HUANG Chao-qing.An Improved RS/GIS Method to Obtain Snail Habitats in the Poyang Lake Region[J].,2014,(02):212-216.
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一种改良的基于RS/GIS技术的鄱阳湖区钉螺滋生地获取方法研究()
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《江西师范大学学报》(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2014年02期
页码:
212-216
栏目:
出版日期:
2014-04-30

文章信息/Info

Title:
An Improved RS/GIS Method to Obtain Snail Habitats in the Poyang Lake Region
作者:
袁宜;赵安;黄潮清
江西师范大学地理与环境学院,江西南昌,330022;江西师范大学地理与环境学院,江西南昌330022;江西师范大学鄱阳湖湿地与流域研究教育部重点实验室,江西南昌330022;江西师范大学鄱阳湖湿地与流域研究教育部重点实验室,江西南昌,330022
Author(s):
YUAN Yi;ZHAO An;HUANG Chao-qing
关键词:
钉螺孳生地遥感/GIS血吸虫病鄱阳湖区
Keywords:
oncomelania hupensis habitatsRS/GISschistosomiasisPoyang Lake region
分类号:
X144;TP79
文献标志码:
A
摘要:
运用遥感影像处理软件对鄱阳湖区丰水期与枯水期影像进行监督分类获取水体范围,两者相减获取“冬陆夏水”区;在“冬陆夏水”区内计算归一化植被指数(NDVI)并提取植被覆盖区;提取鄱阳湖区13~ 18 m的高程范围;将提取的区域与查螺数据进行空间叠加对比分析.在“冬陆夏水”区的13 ~18 m高程范围内,归一化植被指数(NDVI)大于0.17的区域为适宜钉螺孳生的环境;经检验,计算结果得出的钉螺孳生地栅格级准确率达到70.91;.研究表明,鄱阳湖区“冬陆夏水”范围和植被覆盖范围广大,预测模型中增加适宜钉螺孳生的高程信息将提高计算结果的精确度.
Abstract:
Water body area was extracted from the RS images in flood season and dry season of the Poyang Lake region by Supervised Classification.The area of “water in summer and land in winter” was determined by subtracting the waters in the two classified images.Secondly,the vegetation-covered areas was derived from the subtracted areas using Normalized Difference Vegetation Index (NDVI).Then,the elevation of 13 to 18 m regions was extracted from the Digital Elevation Model of the Poyang Lake region.Finally,the above computed areas were overlapped with the field surveyed snail data,and the areas suitable for snail habitat were the Intersected areas with elevation between 13 to 18 m and NDVI>0.17 in the area of “water in summer and land in winter”.Results indicate that inclusion of elevation data can tremendously improve the accuracy of modeling results.

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备注/Memo

备注/Memo:
国家自然科学基金(40861021,81260449)
更新日期/Last Update: 1900-01-01