干旱区生态环境知识资源中心(Arid): The Influence of Soil Organic Carbon and Climate Variability on Crop Yields in Kongwa District, Tanzania

Arid

DOI	10.1007/s00267-022-01592-0
	The Influence of Soil Organic Carbon and Climate Variability on Crop Yields in Kongwa District, Tanzania
	Mkonda, Msafiri Y.; He, Xinhua
通讯作者	Mkonda, MY (corresponding author)，Southwest Univ, Coll Resources & Environm, Ctr Excellence Soil Biol, Chongqing, Peoples R China. ; Mkonda, MY (corresponding author)，Sokoine Univ Agr, Coll Nat & Appl Sci, Dept Geog & Environm Studies, Morogoro, Tanzania.
来源期刊	ENVIRONMENTAL MANAGEMENT
ISSN	0364-152X
EISSN	1432-1009
出版年	2023
英文摘要	Y This study assessed the influence of soil organic carbon (SOC) accumulation and climate variability on crop yields in Kongwa District, central Tanzania. In doing so, climate data and soil samples were collected from Mnyakongo and Ugogoni villages through soil sampling, interviews and surveys. Walkley-Black method, Mann-Kendall test, and MS Excel were used to analyze SOC, climate, crop yields respectively. The results exhibited that the accumulation of SOC was significantly greater in soils under organic fertilization (1.15 and 0.80 MgC ha(-1) at soil 0-20 cm and 20-30 cm depth) than under no-fertilization (0.35 and 0.30 MgC ha(-1) at 0-20 cm and 20-30 cm) and decreased with increasing soil depths. Under these two soil treatments, the average yields for maize, sorghum and millet were almost 1.8 tn ha(-1) under organic fertilization and 0.6 tn ha(-1) under no-fertilization. Specifically, maize yields ranged from 1.5 to 2.2 tn ha(-1), while both sorghum and millet had 1.1-1.7 tn ha(-1). Therefore, yields were significantly higher under organic fertilizations than under no-fertilizations. Besides, the mean annual rainfall or temperature (1980-2020) fluctuated at a decreasing (R-2 = 0.21) or an increasing trend (R-2 = 0.30). Comparatively, the yields for maize, sorghum or millet fluctuated at a decreasing trend at R-2 = 0.07, 0.05, or 0.85, respectively. Correspondingly, it was found that the temporal increase in rainfall and temperature had positive (R-2 similar to 0.5) and negative (R-2 similar to 0.3) correlations with crop yields, respectively. In contrast, the decline in rain's intensity and frequency had negative impacts on crop yields. Thus, both SOC and climate correlated with crop yields.
英文关键词	Agroecosystems Climate Fertilization Semi-arid areas SOC Tanzania
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000740170400001
WOS关键词	SMALLHOLDER FARMERS ; VULNERABILITY ; ADAPTATION ; LIVELIHOODS ; DYNAMICS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377167
作者单位	[Mkonda, Msafiri Y.; He, Xinhua] Southwest Univ, Coll Resources & Environm, Ctr Excellence Soil Biol, Chongqing, Peoples R China; [Mkonda, Msafiri Y.] Sokoine Univ Agr, Coll Nat & Appl Sci, Dept Geog & Environm Studies, Morogoro, Tanzania; [He, Xinhua] Univ Western Australia, Sch Biol Sci, Crawley, WA, Australia
推荐引用方式 GB/T 7714	Mkonda, Msafiri Y.,He, Xinhua. The Influence of Soil Organic Carbon and Climate Variability on Crop Yields in Kongwa District, Tanzania[J],2023.
APA	Mkonda, Msafiri Y.,&He, Xinhua.(2023).The Influence of Soil Organic Carbon and Climate Variability on Crop Yields in Kongwa District, Tanzania.ENVIRONMENTAL MANAGEMENT.
MLA	Mkonda, Msafiri Y.,et al."The Influence of Soil Organic Carbon and Climate Variability on Crop Yields in Kongwa District, Tanzania".ENVIRONMENTAL MANAGEMENT (2023).