| 引用本文: | 杨英宝,江南,殷立琼,胡斌.东太湖湖泊面积及网围养殖动态变化的遥感监测.湖泊科学,2005,17(2):133-137. DOI:10.18307/2005.0207 |
| YANG Yingbao,JIANG Nan,YIN Liqiong,HU Bin.RS-based Dynamic Monitoring of Lake Area and Enclosure Culture in East Taihu Lake. J. Lake Sci.2005,17(2):133-137. DOI:10.18307/2005.0207 |
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| 摘要: |
| 东太湖高密度网围养殖已是东太湖水资源过度开发的重要问题,彻底查清东太湖网围养殖规模,是采取一切治理措施的前提,遥感技术可真实反映湖区网围养殖情况,能避免人为的虚报、错报现象.本文利用六景TM图像和三期高精度航片,分析了东太湖20世纪80年代以来湖泊面积、网围养殖的时空变化情况并提出控制网围养殖盲目发展的对策.1984年以来,东太湖湖泊面积持续减小,20年内共减少了249.23hm2;其中1994-2000年是湖泊消失的快速时期,消失的湖泊主要用于围垦养殖.1990年以来,网围养殖规模逐渐增大.目前几乎布满整个东太湖;1995年以来的增长速度更为迅速,2003年的网围面积10647.02hm2,比1995年增加了9401.29hm2,该时期内网围规模增加的年速率是1990-1995年的4倍. |
| 关键词: 湖泊面积 网围养殖 东太湖 遥感 |
| DOI：10.18307/2005.0207 |
| 分类号: |
| 基金项目:中国科学院知识刨新项目(KZCX3-SW-331)资助． |
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| RS-based Dynamic Monitoring of Lake Area and Enclosure Culture in East Taihu Lake |
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YANG Yingbao1,2, JIANG Nan1, YIN Liqiong1,2, HU Bin1,2
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1.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, Jiangsu 210008, P. R. China;2.Graduate School of The Chinese Academy of Sciences, Beijing 100039, P. R. China
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| Abstract: |
| High-intensity enclosure culture in East Taihu Lake is a big problem for water resource exploitation.The quantity of enclosure culture in East Taihu must be checked truly before souie measures are taken.Remote Sensing technology can investigate the true scope of it.This paper studied the change of lake area and enclosure culture in East Thaihu Lake by using Landsat TM of 1984,1988,1994,1997,2000,2002 and aerial photograph with high-spatial resolution of 1990,1995,2003.The results indicated that the lake area has been decreasing since 19B0s.The area decreased 2049.23hm2 between 1984 to 2003 because of reclamation.The decreasing was more quickly between 1994 and 2000.The scope of enclosure culture has become lager since 1990 and the enclosure culture has bestrewed the whole East Taihu Lake today.The area of enclosure culture in 2003 was 10647.02hm2 and has increased 9401.29 hm2 since 1995.The rate of incnease hetween 2003 and 1995 was fourfold than that between 1990 to 1995.Higher density of enclosure culture has become a big problem of water resource exploitation in East Taihu Lake.The water quality of East Taihu became worse and the process of swamp became very fast.Some countermeasures were presented in this paper.The area of enclosure culture should be limited and its structure must be improved.We should call for developing ecotypic enclosure culture and strengthen environmental inspect and management by using RS and G1S technology. |
| Key words: Enclosure culture lake Area East Taihu Lake remote sensing |
