Nitrogen loss factors of nitrogen trace gas emissions and leaching from excreta patches in grassland ecosystems: A summary of available data | |
Cai, Yanjiang2; Akiyama, Hiroko2 | |
刊名 | SCIENCE OF THE TOTAL ENVIRONMENT |
2016-12-01 | |
卷号 | 572页码:185-195 |
关键词 | Nitrous oxide Ammonia volatilization Greenhouse gas Global warming Livestock Nutrient cycling |
ISSN号 | 0048-9697 |
通讯作者 | Akiyama, Hiroko |
英文摘要 | Patches of excreta voided by grazing animals are nitrogen (N) transformation hotspots in grassland ecosystems and an important source of N trace gas emissions and leaching. Previous studies have focused on individual N losses from excreta, but no quantitative analysis has been performed on all the N losses via N trace gas emissions and leaching. To better understand the fate of N in excreta patches, we summarized 418, 15, 65, 22, 54, 11, and 81 measurements of nitrous oxide (N2O), nitric oxide (NO), ammonia (NH3), and ammonium (NH4+) leaching, nitrate (NO3-) leaching, dissolved organic nitrogen (DON) leaching, and aboveground plant N uptake, respectively. The results based on field studies indicated that the average fractions of N lost via N2O were 0.28%, 0.76%, 0.08%, and 0.35% for cattle dung, cattle urine, sheep dung, and sheep urine, respectively. Only 0.01-0.12% of excreta N was lost via NO, whereas 1.69-12.7%, 0-4.58%, 16.4-24.6%, and 1.43-5.91% were lost by NH3 and NH4+, NO3-, and DON leaching, respectively. Aboveground plant parts assimilated 10.4-31.4% of the excreta N. The N lost via N2O from urine patches decreased as NH3 losses increased, and greater NO3- leaching occurred with lower plant N uptake. The combined N2O emission factors for dung and urine from cattle and sheep were 0.59% and 0.26%, respectively. Each N loss factor was much higher in urine patches than in dung patches, irrespective of animal type. This study provides general estimates of N losses and plant N uptake from excreta patches on grazed grassland based on currently available field data. More field studies are needed in the future with longer measurement periods from a wide range of climate zones to refine these N loss factors. (C) 2016 Elsevier B.V. All rights reserved. |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
类目[WOS] | Environmental Sciences |
研究领域[WOS] | Environmental Sciences & Ecology |
关键词[WOS] | SOIL N2O FLUXES ; OXIDE EMISSIONS ; CATTLE URINE ; NITRIC-OXIDE ; NEW-ZEALAND ; NITRIFICATION INHIBITOR ; AMMONIA VOLATILIZATION ; NH3 VOLATILIZATION ; UREASE INHIBITOR ; EASTERN CANADA |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000387807200020 |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/18256] |
专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
作者单位 | 1.Natl Agr & Food Res Org, Inst Agroenvironm Sci, 3-1-3 Kannondai, Tsukuba, Ibaraki 3058604, Japan 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolvement & Regulat, Chengdu 610041, Peoples R China 3.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Cai, Yanjiang,Akiyama, Hiroko. Nitrogen loss factors of nitrogen trace gas emissions and leaching from excreta patches in grassland ecosystems: A summary of available data[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,572:185-195. |
APA | Cai, Yanjiang,&Akiyama, Hiroko.(2016).Nitrogen loss factors of nitrogen trace gas emissions and leaching from excreta patches in grassland ecosystems: A summary of available data.SCIENCE OF THE TOTAL ENVIRONMENT,572,185-195. |
MLA | Cai, Yanjiang,et al."Nitrogen loss factors of nitrogen trace gas emissions and leaching from excreta patches in grassland ecosystems: A summary of available data".SCIENCE OF THE TOTAL ENVIRONMENT 572(2016):185-195. |
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