ASSESSMENT AND MONITORING OF SPATIO-TEMPORAL CHANGES IN KEOLADEO GHANA NATIONAL PARK, RAJASTHAN, INDIA USING GEOINFORMATICS

Journal of Wetlands Ecology Pub Date : 2011-01-07 DOI:10.3126/JOWE.V4I0.3115

C. Reddy, P. H. Krishna, V. Swetha, T. Shivakala, P. Charan

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引用次数: 7

Abstract

Knowledge of changes in wetlands is becoming a very important issue for sustainable management of natural resources. The present work has been carried out: in Keoladeo Ghana National Park (KNP), a RAMSAR site to study the dynamics of wetlands with reference to long-term and seasonal changes in extent of water spread, vegetation types and to build a spatial database on wetlands. Multi-temporal satellite data of Landsat MSS (1977), Landsat TM data (1989), IRS P6 AWIFS (2005) and IRS P6 LISS III data (2005-2006) was used for mapping and spatial analysis. Comparisons between 1977 and 2005 indicated that changes in overall wetland areas were significant. The total area of wetland in March 1977 was 186 hectares and in March 2005 it was found to be 7.5 ha. There is a drastic reduction in spatial extent of water spread from October to May and results indicated that the total area ranged from 528 ha (October 2005) to 7.5 ha (March-May 2005). The study clearly points that Geoinformatics have become very effective tool for wetlands mapping and monitoring. Key words: wetlands; geoinformatics; satellite data; Keoladeo; Rajasthan DOI: 10.3126/jowe.v4i0.3115 Journal of Wetlands Ecology , (2010) Vol. 4, pp 33-42

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基于地理信息学的印度拉贾斯坦邦keoladeo加纳国家公园时空变化评价与监测

了解湿地的变化正成为自然资源可持续管理的一个非常重要的问题。目前的工作是在RAMSAR站点Keoladeo Ghana National Park (KNP)进行的，研究湿地的动态，参考水扩散程度、植被类型的长期和季节性变化，并建立湿地空间数据库。利用Landsat MSS(1977)、Landsat TM(1989)、IRS P6 AWIFS(2005)和IRS P6 LISS III(2005-2006)的多时相卫星数据进行制图和空间分析。1977 ~ 2005年湿地面积变化显著。1977年3月湿地总面积为186公顷，2005年3月湿地总面积为7.5公顷。10 - 5月流域水分布空间范围明显减小，总面积为528 ha(2005年10月)- 7.5 ha(2005年3 - 5月)。研究表明，地理信息学已成为湿地制图和监测的有效工具。关键词:湿地;geoinformatics;卫星数据;Keoladeo;湿地生态学报，(2010)Vol. 4, pp 33-42

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Journal of Wetlands Ecology

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