| 洞庭湖区"冬陆夏水"区域变化研究 |
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| 引用本文： | 龙芳,秦建新,谭子芳.洞庭湖区"冬陆夏水"区域变化研究[J].地理空间信息,2011,9(3):136-138. |
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| 作者姓名： | 龙芳 秦建新 谭子芳 |
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| 作者单位： | 湖南师范大学资源与环境科学学院,湖南长沙,410006 |
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| 基金项目： | 国家自然科学基金资助项目(40971038) |
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| 摘 要： | 利用遥感与地理信息系统技术,提取1987,1998,2003和2008年4个时段洞庭湖"冬陆夏水"区域.运用改进归一化差异水体指数(MNDWI)的方法,提取丰水期和枯水期遥感图像的水体并相减,获得"冬陆夏水"区域,并对20年的"冬陆夏水"变化的面积进行监督分类.分析发现,研究区的"冬陆夏水"面积,从1987年到2008...
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| 关 键 词： | "冬陆夏水"区域 钉螺孳生地 遥感信息处理 地理信息系统 |
Changes of the Regions of Water in Summer and Land in Winter in Dongting Lake |
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| LONG Fang,QIN Jianxin,TAN Zifang.Changes of the Regions of Water in Summer and Land in Winter in Dongting Lake[J].Geospatial Information,2011,9(3):136-138. |
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| Authors: | LONG Fang QIN Jianxin TAN Zifang |
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| Abstract: | The regions of water in summer and land in winter of four periods in Dongting Lake were extracted by using remote sensing(RS) and geographic information system(GIS).The images of RS for abundant-water period and low-water period in Dongting Lake were extracted and Modified Normalized Difference Water Index(MNDWI) was computed and extracted.The regiond of water in summer and land in winter were determined by subtracting the MNDWI in the two images.The changes of the regions among 20 years were classified in ... |
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| Keywords: | The regions of water in summer and land in winter snail habitats remote sensing image processing GIS |
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