| Autor: |
Francis Atube, Geoffrey M. Malinga, Martine Nyeko, Daniel M. Okello, Basil Mugonola, George William Omony, Ipolto Okello-Uma |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
CABI Agriculture and Bioscience, Vol 3, Iss 1, Pp 1-16 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2662-4044 |
| DOI: |
10.1186/s43170-022-00116-4 |
| Popis: |
Abstract Background Climate change poses severe threats to smallholder farmers' agricultural livelihoods and food security in Sub Saharan Africa. Understanding long-term rainfall trends of variability and extremes at local scales and perceptions regarding long-term changes in climate variables is important in planning appropriate adaptation measures to climate change. This paper examines the perception of farmers in Apac district regarding long-term changes in climate variables and analyzes the trend of occurrence in seasonal and annual rainfall in Apac district, northern Uganda. A cross-sectional survey design was employed to collect data on farmers' perceptions regarding long-term changes in climate from 260 randomly selected smallholder farmers’ households across two sub-counties in Apac district by administering semi-structured questionnaires in February 2018. Monthly rainfall data sets from the Uganda Meteorological Authority (UMA) for the period 1980 to 2019 for Apac district were also used to analyze trends of occurrences in seasonal and annual rainfall in the study area. The non-parametric Sequential Mann–Kendall (SMK) tests were employed at a 5% significance level to detect mean seasonal rainfall trends and abrupt change points. Results The majority of the respondents (87%) perceived a decrease in precipitation over the past 39 years. The plot of forward regression u(t i ) values and backward regression u’(t i ) values showed interactions indicating rainfall trends, rainfall lower and upper limits and abrupt change points in the different cropping seasons. Analysis of historical series of mean monthly and annual rainfall showed an abrupt change in rainfall in March, April, May (MAM) season in 1982. Although the September, October and November (SON) season did not show a significant abrupt change, there was a significant (p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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