干旱区生态环境知识资源中心(Arid): Changes in soil organic carbon stock and nutrient status after conversion of pasture land to cultivated land in semi-arid areas of northern Ethiopia

Arid

DOI	10.1080/03650340.2020.1823372
	Changes in soil organic carbon stock and nutrient status after conversion of pasture land to cultivated land in semi-arid areas of northern Ethiopia
	Gebresamuel, Girmay; Molla, Berhanu; Teka, Kassa; Negash, Emnet; Haile, Mitiku; Okolo, Chukwuebuka Christopher
通讯作者	Gebresamuel, G
来源期刊	ARCHIVES OF AGRONOMY AND SOIL SCIENCE
ISSN	0365-0340
EISSN	1476-3567
出版年	2020-10
英文摘要	Conversion of native pasturelands to cultivated land led to a decline in soil fertility resulting in low agricultural productivity. This study attempted to investigate the magnitude and rate of pastureland to cultivated land conversion and the associated impact on selected soil properties. The study was conducted in three villages of Ofla district, northern Ethiopia. Land-use conversion that happened between 1973 and 2015 was investigated using satellite images supplemented by field observation and key informant interview. Cultivated lands with different history of cultivation period (2, 10, 20, 30 and 42 years) since conversion were identified. A total of 54 soil samples were collected from cultivated and pasture lands for soil physico-chemical analysis. Results showed that pastureland conversion to cultivated land increased at a medium rate of 17 ha year(-1) and by 46% over the last 42 years. Over the same period, soil organic carbon, total nitrogen, available phosphorous, available potassium and electrical conductivity declined by 65%, 59%, 57%, 70% and 74%, respectively. The continued steady decline in soil quality with increasing period of cultivation shows that the current management practices are not sustainable and calls for urgent solution to reverse the negative scenario.
英文关键词	Critical threshold values degradation index land-cover change land-use soil fertility
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000583599300001
WOS关键词	COVER DYNAMICS ; DEFORESTATION ; DEGRADATION ; IMPACTS ; STORAGE
WOS类目	Agronomy ; Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328412
作者单位	[Gebresamuel, Girmay; Molla, Berhanu; Teka, Kassa; Haile, Mitiku; Okolo, Chukwuebuka Christopher] Mekelle Univ, Dept Land Resources Management & Environm Protect, Mekelle, Ethiopia; [Negash, Emnet; Okolo, Chukwuebuka Christopher] Mekelle Univ, Inst Climate & Soc, Mekelle, Ethiopia; [Negash, Emnet] Univ Ghent, Dept Geog, Ghent, Belgium; [Okolo, Chukwuebuka Christopher] Univ Vienna, Ctr Microbiol & Environm Syst Sci, Dept Microbiol & Ecosyst Sci, Vienna, Austria
推荐引用方式 GB/T 7714	Gebresamuel, Girmay,Molla, Berhanu,Teka, Kassa,et al. Changes in soil organic carbon stock and nutrient status after conversion of pasture land to cultivated land in semi-arid areas of northern Ethiopia[J],2020.
APA	Gebresamuel, Girmay,Molla, Berhanu,Teka, Kassa,Negash, Emnet,Haile, Mitiku,&Okolo, Chukwuebuka Christopher.(2020).Changes in soil organic carbon stock and nutrient status after conversion of pasture land to cultivated land in semi-arid areas of northern Ethiopia.ARCHIVES OF AGRONOMY AND SOIL SCIENCE.
MLA	Gebresamuel, Girmay,et al."Changes in soil organic carbon stock and nutrient status after conversion of pasture land to cultivated land in semi-arid areas of northern Ethiopia".ARCHIVES OF AGRONOMY AND SOIL SCIENCE (2020).