尼日利亚部分农业地区降水、温度和土壤湿度的时空趋势分析--一项比较研究

IF 1.827 Q2 Earth and Planetary Sciences
Blessing Funmbi Sasanya, Akeem Abiodun Ademola, Sunday Olufemi Adesogan
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引用次数: 0

摘要

降水、温度和蒸发的趋势和变化是气候变化的一些明显影响。本研究评估了降水和温度趋势及变化对土壤水分储存的影响。研究收集了尼日利亚南部和北部四个农业地方政府辖区四十一年来的降水、温度和土壤水分历史数据。使用曼-肯德尔指数、修正的曼-肯德尔指数、帕尔默干旱严重程度指数、标准化降水蒸发指数、标准化降水指数和温度指数对趋势变化和变异性进行了分析。在过去 40 年中,北部地区的观测降水量显著减少,南部和北部地区的气温显著上升。然而,包括最热日(TXx)、夏日(SU35)和昼夜温差(DTR)在内的温度指数表明,尼日利亚北部比尼日利亚南部经历了更极端的温度上升,因此也更加干旱。北部地区的 TXx、SU35 和 DTR 平均值分别为 39.66 °C、66.49 天和 17.99 °C,而南部地区分别为 33.61 °C、0.075 天和 9.47 °C。气温的持续升高和降水量的减少可归因于臭氧层消耗引起的气候变化。低降水量和高温导致尼日利亚北部土壤水分储量显著减少,而尼日利亚南部土壤水分减少有限。因此,气温和降水趋势对土壤水分趋势的影响突出表明,有必要进行适当的水资源管理、持续保持土壤水分和加强灌溉,以提高粮食产量和粮食安全。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Spatiotemporal trend analysis of precipitation, temperature, and soil moisture in selected agrarian locations within Nigeria—a comparative study

Spatiotemporal trend analysis of precipitation, temperature, and soil moisture in selected agrarian locations within Nigeria—a comparative study

Spatiotemporal trend analysis of precipitation, temperature, and soil moisture in selected agrarian locations within Nigeria—a comparative study

Changes in trends and variabilities of precipitation, temperature, and evaporation are some of the pronounced effects of climate change. This study assessed the effects of precipitation and temperature trends and variabilities on soil moisture storage. Forty-one years’ historical data on precipitation, temperature, and soil moisture were collected for four agrarian local government areas in southern and northern Nigeria. Trend changes and variabilities were analyzed using the Mann Kendall, modified Mann Kendall, Palmer drought severity index, standardized precipitation evaporation index, standardized precipitation index, and temperature indices. Observed precipitation in the northern part experienced very significant decrease and both the southern and northern divides experienced significant temperature increase over the last four decades. However, the temperature indices including hottest days (TXx), summer day (SU35), and diurnal temperature range (DTR) indicated northern Nigeria experienced more extreme temperature increase and thus more drought than southern Nigeria. The northern part had averages TXx, SU35, and DTR of 39.66 °C, 66.49 days, and 17.99 °C, while the southern part had 33.61 °C, 0.075 days, and 9.47 °C, respectively. The continuous increase in temperature and precipitation decrease are attributable to climate change caused by ozone layer depletion. Low precipitation and high temperature resulted to significant reduction of soil moisture storage in northern Nigeria, while soil moisture reductions were limited in southern Nigeria. Effects of temperature and precipitation trends on soil moisture trends therefore emphasize the need for proper water management, continuous soil moisture conservation, and intense irrigation practices, to enhance food production and security.

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来源期刊
Arabian Journal of Geosciences
Arabian Journal of Geosciences GEOSCIENCES, MULTIDISCIPLINARY-
自引率
0.00%
发文量
1587
审稿时长
6.7 months
期刊介绍: The Arabian Journal of Geosciences is the official journal of the Saudi Society for Geosciences and publishes peer-reviewed original and review articles on the entire range of Earth Science themes, focused on, but not limited to, those that have regional significance to the Middle East and the Euro-Mediterranean Zone. Key topics therefore include; geology, hydrogeology, earth system science, petroleum sciences, geophysics, seismology and crustal structures, tectonics, sedimentology, palaeontology, metamorphic and igneous petrology, natural hazards, environmental sciences and sustainable development, geoarchaeology, geomorphology, paleo-environment studies, oceanography, atmospheric sciences, GIS and remote sensing, geodesy, mineralogy, volcanology, geochemistry and metallogenesis.
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