Evaluation of nitrogen cycling associated with agricultural production and environmental load in a mountain region, in Hokkaido, Japan
文献类型：期刊论文
| 作者 | Liang Lei ; Jin Datian ; Hu Ning |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2008-06 |
| 卷号 | 5期号:2页码:130–139 |
| 关键词 | cycling index mountain agro-ecosystem N cycling N load N management Hokkaido Japan |
| ISSN号 | 1672-6316 |
| 通讯作者 | Liang, L |
| 英文摘要 | This study examined the nitrogen cycling associated with agricultural production and environmental load in central Hokkaido. The nitrogen (N) budget analysis model offers a new set of tools for evaluating N cycling in agro-ecosystems. The cycling index (CI) is a useful tool for estimating optimal N flows in farmlands. The fertilization index (FI) is a useful indicator for characterizing the N flows related to farms. Using these parameters, we analyzed all farm systems to estimate the optimal N cycling for minimizing N pollution in groundwater and maximizing agricultural production in mountain regions of Japan. The results showed that the critical N application rate (chemical fertilizer + manure) was 143.3 kg N ha(-1) y(-1). The critical inter-system input (chemical fertilizer N, imported food and feed N, and natural supplied N) was 169.2 kg N ha(-1) y(-1). |
| 语种 | 英语 |
| 公开日期 | 2013-08-14 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/6049]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2008_Vol5 No.2 |
| 推荐引用方式 GB/T 7714 | Liang Lei,Jin Datian,Hu Ning. Evaluation of nitrogen cycling associated with agricultural production and environmental load in a mountain region, in Hokkaido, Japan[J]. JOURNAL OF MOUNTAIN SCIENCE,2008,5(2):130–139. |
| APA | Liang Lei,Jin Datian,&Hu Ning.(2008).Evaluation of nitrogen cycling associated with agricultural production and environmental load in a mountain region, in Hokkaido, Japan.JOURNAL OF MOUNTAIN SCIENCE,5(2),130–139. |
| MLA | Liang Lei,et al."Evaluation of nitrogen cycling associated with agricultural production and environmental load in a mountain region, in Hokkaido, Japan".JOURNAL OF MOUNTAIN SCIENCE 5.2(2008):130–139. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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