Usle-based assessment of soil erosion by water in the nyabarongo river catchment, rwanda
文献类型：期刊论文
| 作者 | Karamage, Fidele1,2,3; Zhang, Chi1,4; Kayiranga, Alphonse1,2,3; Shao, Hua1,2; Fang, Xia1,2; Ndayisaba, Felix1,2,3; Nahayo, Lamek1,2,3; Mupenzi, Christophe1,2,3; Tian, Guangjin5 |
| 刊名 | International journal of environmental research and public health
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 13期号:8页码:16 |
| ISSN号 | 1660-4601 |
| 关键词 | Soil erosion Water pollution Cropland Land-cover and land-use Usle Gis Remote sensing Nyabarongo river catchment Rwanda |
| DOI | 10.3390/ijerph13080835 |
| 通讯作者 | Zhang, chi(zc@ms.xjb.ac.cn) |
| 英文摘要 | Soil erosion has become a serious problem in recent decades due to unhalted trends of unsustainable land use practices. assessment of soil erosion is a prominent tool in planning and conservation of soil and water resource ecosystems. the universal soil loss equation (usle) was applied to nyabarongo river catchment that drains about 8413.75 km(2) (33%) of the total rwanda coverage and a small part of the southern uganda (about 64.50 km(2)) using geographic information systems (gis) and remote sensing technologies. the estimated total annual actual soil loss was approximately estimated at 409 million tons with a mean erosion rate of 490 t.ha(-1).y(-1) (i.e., 32.67 mm.y(-1)). the cropland that occupied 74.85% of the total catchment presented a mean erosion rate of 618 t.ha(-1).y(-1) (i.e., 41.20 mm.y(-1)) and was responsible for 95.8% of total annual soil loss. emergency soil erosion control is required with a priority accorded to cropland area of 173,244 ha, which is extremely exposed to actual soil erosion rate of 2222 t.ha(-1).y(-1) (i.e., 148.13 mm.y(-1)) and contributed to 96.2% of the total extreme soil loss in the catchment. according to this study, terracing cultivation method could reduce the current erosion rate in cropland areas by about 78%. therefore, the present study suggests the catchment management by constructing check dams, terracing, agroforestry and reforestation of highly exposed areas as suitable measures for erosion and water pollution control within the nyabarongo river catchment and in other regions facing the same problems. |
| WOS关键词 | PARKS CENTRAL SYSTEM ; LOSS EQUATION ; R-FACTOR ; RISK ; CONSERVATION ; DYNAMICS ; FORESTS ; AFRICA ; AREAS ; SPAIN |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| 出版者 | MDPI AG |
| WOS记录号 | WOS:000382462900090 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375429 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhang, Chi |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Lay Adventists Kigali UNILAK, Fac Environm Studies, PO 6392, Kigali, Rwanda 4.Hubei Univ Sci & Technol, Sch Resources Environm Sci & Engn, Xianning 437000, Peoples R China 5.Beijing Normal Univ, Sch Environm, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Karamage, Fidele,Zhang, Chi,Kayiranga, Alphonse,et al. Usle-based assessment of soil erosion by water in the nyabarongo river catchment, rwanda[J]. International journal of environmental research and public health,2016,13(8):16. |
| APA | Karamage, Fidele.,Zhang, Chi.,Kayiranga, Alphonse.,Shao, Hua.,Fang, Xia.,...&Tian, Guangjin.(2016).Usle-based assessment of soil erosion by water in the nyabarongo river catchment, rwanda.International journal of environmental research and public health,13(8),16. |
| MLA | Karamage, Fidele,et al."Usle-based assessment of soil erosion by water in the nyabarongo river catchment, rwanda".International journal of environmental research and public health 13.8(2016):16. |
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来源：中国科学院大学
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