利用 NDWI 指数估算马哈拉施特拉邦 Parbhani 地区的干旱严重程度

Q3 Agricultural and Biological Sciences

Journal of Agrometeorology Pub Date : 2024-06-01 DOI:10.54386/jam.v26i2.2540

PRITAM PATIL, M. P. Jagtap, K. K. Dakhore

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引用次数: 0

摘要

该研究利用遥感技术调查了干旱对马哈拉施特拉邦帕尔巴尼地区植被的影响。通过分析 2015 年（干旱年）和 2020 年（正常年）的 Landsat 8 数据，发现归一化差异水指数（NDWI）的波动与降雨模式密切相关。2015 年，归一化水量差异指数（NDWI）显示出极端干旱的状况，而 2020 年，大部分地区经历了轻度干旱。这一对比凸显了 NDWI 对降雨变化和干旱期的敏感性。气象因素、地理特征和人类活动会影响植被和土壤中的水分含量，这反映在干旱严重程度等级的分布上。2020 年，中度干旱的面积比例上升，随着降雨量的减少，中度干旱将转变为极端干旱。这种递增式的变化凸显了帕尔巴尼地区对干旱条件的易感性，强调了干旱评估和管理中自然因素和人为因素的相互作用。

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Drought severity estimation using NDWI index in Parbhani district of Maharashtra

The study was carried out to investigate the impact of drought on vegetation in Maharashtra's Parbhani district, utilizing remote sensing techniques. Analysis of Landsat 8 data for 2015 (a drought year) and 2020 (a normal year) reveals fluctuations in the Normalized Difference Water Index (NDWI) closely correlated with rainfall patterns. In 2015, NDWI indicated extreme drought conditions, while in 2020, most areas experienced mild drought. The comparison underscores NDWI's sensitivity to rainfall variability and dry spells. Meteorological factors, geographical features, and human activities influence moisture content in vegetation and soil, reflected in the distribution of drought severity classes. In 2020, a higher percentage of the area fell into the moderate drought category, shifting to extreme drought with reduced rainfall. This incremental shift highlights the susceptibility of the Parbhani district to drought conditions, emphasizing the interplay of natural and anthropogenic factors in drought assessment and management.

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来源期刊

Journal of Agrometeorology 农林科学-农艺学

CiteScore

1.40

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Agrometeorology (ISSN 0972-1665) , is a quarterly publication of Association of Agrometeorologists appearing in March, June, September and December. Since its beginning in 1999 till 2016, it was a half yearly publication appearing in June and December. In addition to regular issues, Association also brings out the special issues of the journal covering selected papers presented in seminar symposia organized by the Association.