Investigation of vegetation dynamics with a focus on agricultural land cover and its relation with meteorological parameters based on the remote sensing techniques: a case study of the Gavkhoni watershed

IF 2 4区农林科学 Q2 AGRONOMY

International Agrophysics Pub Date : 2024-05-06 DOI:10.31545/intagr/185986

I. Rousta, Safoora Izadian, H. Ólafsson, A. Siedliska, J. Krzyszczak

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Abstract

. Background and Aims: This research investigates vegetation dynamics in the Gavkhouni catchment from 2001 to 2021, focusing on the spring season. The aim is to analyse the relationship between aridity, vegetation, and rainfall. Moreover, additional emphasis was placed on exploring the impact of these dynamics on agricultural land cover thereby contributing to our understanding of the environmental dynamics in the Gavkhouni catchment. Methods: The study made use of MODIS data, includ - ing the Enhanced Vegetation Index and Vegetation Condition Index, along with monthly rainfall statistics from Chirps. Analytical methods include time series analyses using correlation and regression analysis. Results: Throughout the study period, the average spring vegetation cover was 9276.33 km². The years 2001 and 2018 had the lowest degree of vegetation (15.53, and 17.3% of the watershed area). Conversely, 2013, 2019, and 2020 had the most coverage (27.4, 26.8, and 26.3%). The Enhanced Vegetation Index highlighted the arid years (2001, 2008, 2011, and 2018) and the years with the lowest drought prevalence (2006, 2007, 2010, 2013). Enhanced Vegetation Index correlated with spring rainfall. Cropland cover declined over the study period, and a close correlation was found between winter rainfall and spring agricultural coverage.

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基于遥感技术的植被动态调查（重点是农田植被）及其与气象参数的关系：加夫科尼流域案例研究

.背景和目的：本研究调查了 2001 年至 2021 年加夫胡尼流域的植被动态，重点是春季。目的是分析干旱、植被和降雨量之间的关系。此外，研究还重点探讨了这些动态对农业用地覆盖的影响，从而有助于我们了解加夫胡尼集水区的环境动态。研究方法：研究利用了 MODIS 数据，包括增强植被指数和植被状况指数，以及 Chirps 的月降雨量统计数据。分析方法包括使用相关分析和回归分析进行时间序列分析。结果：在整个研究期间，春季平均植被覆盖面积为 9276.33 平方公里。2001 年和 2018 年的植被覆盖度最低（分别占流域面积的 15.53% 和 17.3%）。相反，2013 年、2019 年和 2020 年的植被覆盖率最高（27.4%、26.8% 和 26.3%）。增强植被指数突出显示了干旱年份（2001 年、2008 年、2011 年和 2018 年）和干旱发生率最低的年份（2006 年、2007 年、2010 年和 2013 年）。增强植被指数与春季降雨量相关。耕地覆盖率在研究期间有所下降，冬季降雨量与春季农业覆盖率之间存在密切联系。

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来源期刊

International Agrophysics 农林科学-农艺学

CiteScore

3.60

自引率

9.10%

发文量

审稿时长

3 months

期刊介绍： The journal is focused on the soil-plant-atmosphere system. The journal publishes original research and review papers on any subject regarding soil, plant and atmosphere and the interface in between. Manuscripts on postharvest processing and quality of crops are also welcomed. Particularly the journal is focused on the following areas: implications of agricultural land use, soil management and climate change on production of biomass and renewable energy, soil structure, cycling of carbon, water, heat and nutrients, biota, greenhouse gases and environment, soil-plant-atmosphere continuum and ways of its regulation to increase efficiency of water, energy and chemicals in agriculture, postharvest management and processing of agricultural and horticultural products in relation to food quality and safety, mathematical modeling of physical processes affecting environment quality, plant production and postharvest processing, advances in sensors and communication devices to measure and collect information about physical conditions in agricultural and natural environments. Papers accepted in the International Agrophysics should reveal substantial novelty and include thoughtful physical, biological and chemical interpretation and accurate description of the methods used. All manuscripts are initially checked on topic suitability and linguistic quality.

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