Journal
MODELING EARTH SYSTEMS AND ENVIRONMENT
Volume -, Issue -, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s40808-023-01842-y
Keywords
Agroecology; Drought-prone; Soil moisture; Teff cropland; Upper Blue Nile basin
Categories
Ask authors/readers for more resources
In this study, the researchers examined the variability of soil respiration (Rs) under different land uses and its influencing factors. The results showed that Rs was significantly higher in teff farmland and khat plantation compared to grazing land in winter and spring, while Rs in grazing land was higher in autumn. Moreover, the influence of environmental factors on Rs varied spatially and temporally.
Understanding the dependence of soil respiration (Rs) on land use can improve our understanding of global carbon dioxide fluxes and provide useful information for designing land management options. In this study, we examine the spatiotemporal variability of Rs and the factors that influence it. Mean Rs was significantly higher (p < 0.05) in the teff farmland (TC) and khat plantation (KP) than in grazing land (GL) in the midland; Rs rates were significantly higher (p < 0.05) in GL than A. decurrens (AP) and TC in the highland area. In the highlands, seasonal variation of Rs was significantly (p < 0.05) greater in autumn in GL than in TC and AP, but in winter, Rs varied significantly (p < 0.05) more in AP than in TC and GL. In the midland, TC had significantly (p < 0.05) higher Rs than GL in autumn. In addition, TC and KP had significantly higher Rs than GL in winter and spring. In the highlands, S-T explained 0.02-45% Rs variation using the exponential model; however, in the midlands, S-T explained 5-28%. In the midland, the quadratic function explained 32-89% of the variation in the seasonal Rs rates based on S-M, while in the highlands, it explained 11-66%. Moreover, multiple regressions explained 57-80% of the variation in annual Rs rates in midlands based on S-T and S-M, while they explained only 12-32% in the highlands. Thus, Rs was mainly influenced by environmental factors, although it varied spatially and temporally.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available