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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Prioritization of sub-watersheds for sustainable development and management of natural resources: An integrated approach using remote sensing, GIS and socio-economic data
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Prioritization of sub-watersheds for sustainable development and management of natural resources: An integrated approach using remote sensing, GIS and socio-economic data

机译：为可持续发展和自然资源管理优先考虑分水岭：利用遥感，地理信息系统和社会经济数据的综合方法

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The study area is one of the watersheds of North Pennar basin, covering an area of 570 km(2) and lies between latitude 13 degrees 55'-14 degrees 17'N and longitude 77 degrees 05'-77 degrees 25'E in Pavagada area, Tumkur District, Karnataka and a small portion in Ananthpur District, Andhra Pradesh, India, forming a part of the hardrock terrain. The drainage network shows dendritic to sub-dendritic pattern and is non-perennial in nature. Poor soil cover, sparse vegetation, erratic rainfall and lack of soil moisture characterize the area for most part of the year. Recurring drought coupled with increase in groundwater exploitation results in decline the groundwater level. The entire study area has been further divided into nine sub-watersheds, namelyByadanur, Devadabetta, Talamaradahalli, Gowdatimmanahalli, Naliganahalli, Nagalamadike, Maddalenahalli, Paluvalli tank and Dalavayihalli, ranging in geographical area from 49 to 75 km(2). It has been taken up for prioritization based on available natural resources derived from satellite images and socio-economic conditions, including drainage density, slope, water yield capacity, ground-water prospects, soil, wasteland, irrigated area, forest cover and data on agricultural labourers, SC/ST population and rainfall. On the basis of priority and weightage assigned to each thematic map, the sub-watersheds have been grouped into three categories: high, medium and low priority. The prioritization results reveal that Nagalamadike, Maddalenahalli and Dalavayihalli sub-watersheds rank highest on the basis of weightage and are considered as high priority. These sub-watersheds may be taken up with development and management plans to conserve natural resources on sustainable basis with immediate effect, which will ultimately lead to soil and water conservation.
机译：研究区域是北Pennar盆地的分水岭之一，面积570 km（2），位于帕瓦加达（Pavagada）的北纬13度55'-14度17'N和东经77度05'-77度25'E之间卡纳塔克邦的Tumkur区和印度安得拉邦的Ananthpur区的一小部分，构成了硬岩地形的一部分。排水网络显示出树突状到亚树突状的模式，并且本质上是非多年生的。该地区大部分时间都表现为土壤覆盖不良，植被稀疏，降雨不规律和缺乏土壤水分。反复干旱加上地下水开采量增加，导致地下水位下降。整个研究区域进一步分为9个子集水区，分别是Byadanur，Devadabetta，Talamaradahalli，Gowdatimmanahalli，Naliganahalli，Nagalamadike，Maddalenahalli，Paluvalli坦克和Dalavayihalli，地理范围从49到75 km（2）。已根据卫星图像和社会经济状况得出的可用自然资源，对它进行了优先排序，这些自然资源包括排水密度，坡度，产水量，地下水前景，土壤，荒地，灌溉面积，森林覆盖率和农业数据劳工，南卡罗来纳州/南卡罗来纳州人口和降雨。根据分配给每个专题图的优先级和权重，将分水岭分为三类：高，中和低优先级。优先排序结果表明，以权重为基础，纳加拉玛迪克，马达莱纳哈利（Maddalenahalli）和达拉瓦依哈利（Dalavayihalli）小流域排名最高，被认为是高度优先。这些子集水区可能会被开发和管理计划所采用，以在可持续的基础上保护自然资源并立即生效，最终将导致水土保持。

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