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Exploring the National River with land use perspective-A GIS approach

机译：土地利用视角探索国家河流-GIS方法

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The land along which the river flows has been linked to the river since 1900s by several researchers. Very recently adding to these landscape and riverscape studies is the use of remote sensing and GIS for preparing the land use and land cover (LULC) map of the river basin and subsequently linking it to the water quality of river. After seeing our National River Ganga being untouched exploring such linkages, the present study was designed so as to investigate the effects of land use and land cover on the water quality of the river Ganga. For the purpose of the study the river Ganga stretch of Varanasi region was selected and LULC analysis for buffer radii of 1km along the bank was prepared using Arc GIS 10.2. Further parameters measuring the health of the river were linked to the LULC data obtained. The LULC data revealed that there are two predominant land use type in Varanasi viz. urban and agriculture and there are no forested areas near the river riparian zone. The water quality of the river Ganga near the agricultural land use was comparatively better than the stretches lined with built-up area. The source apportionment analysis conducted via principal component test revealed urban land as principal contributor of metals on the other hand agriculture land contributed organic matter into the river. The present research thus is a first and small initiative to direct the riverine research spatially suggesting its expansion over the entire river stretch so as to come up with different approach to rejuvenate the river Ganga.
机译：自1900年代以来，几位研究人员就将河流所流经的土地与河流相连。最近，在这些景观和河景研究中增加了遥感和GIS的使用，以准备流域的土地利用和土地覆盖（LULC）地图，然后将其与河流的水质联系起来。在看到我们的国家恒河未曾探索过这种联系之后，本研究的目的是调查土地利用和土地覆盖对恒河水质的影响。为了研究的目的，选择了瓦拉纳西地区的恒河河段，并使用Arc GIS 10.2对沿河岸1 km的缓冲半径进行了LULC分析。测量河流健康的其他参数与获得的LULC数据相关联。 LULC数据显示，瓦拉纳西州有两种主要的土地利用类型。城市和农业，河岸地区附近没有森林地区。农业用地附近的甘加河水质相对好于建成区两旁的河段。通过主成分测试进行的源分配分析显示，城市土地是金属的主要贡献者，而农业土地则将有机物贡献到了河流中。因此，本研究是在空间上指导河流研究的第一手且很小的举措，表明其在整个河段中的扩展，从而提出了振兴恒河的不同方法。

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