Using cs-137 tracer technique to evaluate erosion and deposition of black soil in northeast china
文献类型：期刊论文
| 作者 | Fang, HJ; Yang, XM; Zhang, XP; Liang, AZ |
| 刊名 | Pedosphere
 |
| 出版日期 | 2006-04-01 |
| 卷号 | 16期号:2页码:201-209 |
| 关键词 | Black soil Cesium-137 (cs-137) Northeast china Quantitative models Soil erosion |
| ISSN号 | 1002-0160 |
| 通讯作者 | Fang, hj(huajunfang@yahoo.com.cn) |
| 英文摘要 | Soil and water losses through erosion have been serious in the black soil region of northeast china. therefore, a sloping cultivated land in songnen plain was selected as a case study to: 1) determine the cs-137 reference inventory in the study area; 2) calculate erosion and deposition rates of black soil on different slope locations; 3) conduct a sensitivity analysis of some model parameters; and 4) compare overall outputs using four different models. three transects were set in the field with five slope locations for each transect, including summit, shoulder-slope, back-slope, foot-slope, and toe-slope. field measurements and model simulation were used to estimate a bomb-derived cs-137 reference inventory in the study area. soil erosion and deposition rates were estimated using four cs-137 models and percentage of cs-137 loss/gain. the cs-137 reference value in the study area was 2232.8 bq m(-2) with cs-137 showing a clear topographic pattern, decreasing from the summit to shoulder-slope, then increasing again at the foot-slope and reaching a maximum at the toe-slope. predicted soil redistribution rates for different slope locations varied. among models, the yang model (yang-m) overestimated erosion loss but underestimated deposition. however, the standard mass balance model (mbm1) gave predictions similar to a mass balance model incorporating soil movement by tillage (mbm2). sensitivity analysis of the proportion factor gamma and distribution pattern of cs-137 in the surface layer demonstrated the impact of cs-137 enrichment on calculation of the soil erosion rate. factors influencing the redistribution of fallout cs-137 in landscape should be fully considered as calculating soil redistribution rate using cs-137 technique. |
| WOS关键词 | LOESS PLATEAU ; CESIUM-137 ; RATES ; LAND |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000236418700009 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2378585 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Fang, HJ |
| 作者单位 | 1.CAS, NE Inst Geog & Agr Ecol, Changchun 130012, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Agr & Agri Food Canada, Greenhouse & Proc Crops Res Ctr, Harrow, ON N0R 1G0, Canada |
| 推荐引用方式 GB/T 7714 | Fang, HJ,Yang, XM,Zhang, XP,et al. Using cs-137 tracer technique to evaluate erosion and deposition of black soil in northeast china[J]. Pedosphere,2006,16(2):201-209. |
| APA | Fang, HJ,Yang, XM,Zhang, XP,&Liang, AZ.(2006).Using cs-137 tracer technique to evaluate erosion and deposition of black soil in northeast china.Pedosphere,16(2),201-209. |
| MLA | Fang, HJ,et al."Using cs-137 tracer technique to evaluate erosion and deposition of black soil in northeast china".Pedosphere 16.2(2006):201-209. |
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来源：中国科学院大学
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