Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1186/s13717-019-0190-8 |
| Dispersed trees on smallholder farms enhance soil fertility in semi-arid Ethiopia | |
| Gebrewahid, Yikunoamlak1; Teka, Kassa2; Gebre-Egziabhier, Tewolde-Berhan3; Tewolde-Berhan, Sara2; Birhane, Emiru2,4; Eyasu, Gebru5; Meresa, Esayas5 | |
| 通讯作者 | Gebrewahid, Yikunoamlak |
| 来源期刊 | ECOLOGICAL PROCESSES
 |
| EISSN | 2192-1709 |
| 出版年 | 2019 |
| 卷号 | 8期号:1 |
| 英文摘要 | Introduction Dispersed trees such as Oxytenanthera abyssinica (A. Rich.) and Dalbergia melanoxylon (Guill. & Perr.) which are objectively maintained or planted on farmland provide a significant contribution to soil fertility improvement. However, there was no quantitative information on the level of soil nutrient additions of these trees to the soil system. Methods This study was conducted on the farmers' fields in Kafta Humera district, Tigray region (northern Ethiopia), where mature stands of O. abyssinica and D. melanoxylon trees exist. Radial distance-based soil sampling (under the canopy, near to canopy, and far from canopy) was adopted to quantify the role of these trees on soil fertility improvement. Soil parameters tested were soil reaction (pH), total nitrogen (TN), available phosphorus (AvP), electrical conductivity (EC), cation exchange capacity (CEC), and organic carbon (OC). Results There was a negative linear relationship between the radial distance of the O. abyssinica tree trunk and soil TN, OC, CEC, and AvP contents but not for pH. Similarly, negative linear relationship between distance from D. melanoxylon and TN, OC, and AvP was obtained. The average total nitrogen (0.26% and 0.13%), available phosphorus (7.21 ppm and 6.37 ppm), and organic carbon (1.73% and 1.02%) contents were respectively higher under the tree canopies of O. abyssinica and D. melanoxylon compared with the adjacent open canopies. The amount of soil OC, TN, AvP, and CEC under O. abyssinica tree species was also significantly higher by 69%, 100%, 13%, and 42% compared to that of D. melanoxylon tree species. However, the amount of EC and soil pH was significantly lower by 57% and 19%, respectively. Conclusion In general, O. abyssinica and D. melanoxylon added a significant amount of nutrients to the soil. Thus, retaining these important tree species on farmland played a positive role in replenishing soil fertility for resource-constrained households so as to reduce chemical fertilizer amendments. |
| 英文关键词 | Scattered tree Oxytenanthera abyssinica Dalbergia melanoxylon Soil properties |
| 类型 | Article |
| 语种 | 英语 |
| 国家 | Ethiopia ; Norway |
| 开放获取类型 | gold |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000484440400001 |
| WOS关键词 | AGROFORESTRY SYSTEM ; FOREST ; SAVANNA ; IMPACTS |
| WOS类目 | Ecology ; 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/2XILL650/215229 |
| 作者单位 | 1.Tigray Agr Res Inst, Humera Agr Res Ctr HuARC, POB 62, Humera, Ethiopia; 2.Mekelle Univ, Dept Land Resources Management & Environm Protect, POB 231, Mekelle, Ethiopia; 3.Minist Environm Forest & Climate Change Ethiopia, Addis Ababa, Ethiopia; 4.Norwegian Univ Life Sci, Fac Environm Sci & Nat Resource Management, POB 5003, NO-1432 As, Norway; 5.Tigray Agr Res Inst, Mekelle Agr Res Ctr, POB 258, Mekelle, Ethiopia |
| 推荐引用方式 GB/T 7714 | Gebrewahid, Yikunoamlak,Teka, Kassa,Gebre-Egziabhier, Tewolde-Berhan,et al. Dispersed trees on smallholder farms enhance soil fertility in semi-arid Ethiopia[J],2019,8(1). |
| APA | Gebrewahid, Yikunoamlak.,Teka, Kassa.,Gebre-Egziabhier, Tewolde-Berhan.,Tewolde-Berhan, Sara.,Birhane, Emiru.,...&Meresa, Esayas.(2019).Dispersed trees on smallholder farms enhance soil fertility in semi-arid Ethiopia.ECOLOGICAL PROCESSES,8(1). |
| MLA | Gebrewahid, Yikunoamlak,et al."Dispersed trees on smallholder farms enhance soil fertility in semi-arid Ethiopia".ECOLOGICAL PROCESSES 8.1(2019). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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