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<p>Understanding and modelling land use pattern and water dynamics of freshwater resources become one of the main topics of concern for environmental management. The study assesses the land use/land cover changes and water spread dynamics of a tropical reservoir using Landsat images from 2000, 2010, and 2020, as well as Sentinel images from 2019 to 2022. Supervised classification, normalized difference water index, water presence frequency methodologies were used for change detection, assessing the water spread and fish culture area. The study showed a significant increase in settlement area from 2000 to 2020 as most of the vegetative lands were converted into settlement areas. The study suggests that around 0.49 million fingerlings are needed to make the best use of the water available in the&#xa0;Peechi reservoir, which could yield a fish production potential of 196.45 metric tonnes. In the Peechi reservoir, the area suitable for cage&#xa0;(annual water spread) and pen culture&#xa0;(seasonal water&#xa0;spread) is estimated to be 310.22&#xa0;ha (34.63%) and 30.40 percent (272.25&#xa0;ha)&#xa0;respectively. The framework builds from the Remote Sensing (RS) and Geographical Information System (GIS) based mapping and can be useful to the policy makers, researchers, academicians, fisheries department officials to institute appropriate development plans and aids in prioritising reservoirs with fish culture potential. The proposed framework can be used to assess change detection in and around any reservoir over a period, to estimate effective water spread area and stocking density for scientific ranching, and to identify potential fish culture sites.</p>

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Land Use Land Cover Change Detection for Fish Culture Area Mapping in the Peechi Reservoir

  • 期刊论文

  • 发表日期：

    2025年6月26日

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  • Mohammed Meharoof,
  • Vinod Kumar Yadav,
  • Arpita Sharma,
  • Shekhar Nath Ojha,
  • V. Anitha,
  • Thankam Theresa Paul

摘要

Understanding and modelling land use pattern and water dynamics of freshwater resources become one of the main topics of concern for environmental management. The study assesses the land use/land cover changes and water spread dynamics of a tropical reservoir using Landsat images from 2000, 2010, and 2020, as well as Sentinel images from 2019 to 2022. Supervised classification, normalized difference water index, water presence frequency methodologies were used for change detection, assessing the water spread and fish culture area. The study showed a significant increase in settlement area from 2000 to 2020 as most of the vegetative lands were converted into settlement areas. The study suggests that around 0.49 million fingerlings are needed to make the best use of the water available in the Peechi reservoir, which could yield a fish production potential of 196.45 metric tonnes. In the Peechi reservoir, the area suitable for cage (annual water spread) and pen culture (seasonal water spread) is estimated to be 310.22 ha (34.63%) and 30.40 percent (272.25 ha) respectively. The framework builds from the Remote Sensing (RS) and Geographical Information System (GIS) based mapping and can be useful to the policy makers, researchers, academicians, fisheries department officials to institute appropriate development plans and aids in prioritising reservoirs with fish culture potential. The proposed framework can be used to assess change detection in and around any reservoir over a period, to estimate effective water spread area and stocking density for scientific ranching, and to identify potential fish culture sites.