Spatial and temporal patterns of soil nitrogen distribution under different land uses in a watershed in the hilly area of purple soil, China
文献类型：期刊论文
| 作者 | Yang Xiao-lin1,2,3; Zhu Bo1 ; Li Yi-ling2
|
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2013-06-01 |
| 卷号 | 10期号:3页码:410-417 |
| 关键词 | Land use Soil nitrogen Spatial variation Temporal variation Watershed scale |
| ISSN号 | 1672-6316 |
| 通讯作者 | ZHU Bo |
| 英文摘要 | Quantification of soil spatial and temporal variability at watershed scale is important in ecological modeling, precision agriculture, and natural resources management. The spatio-temporal variations of soil nitrogen under different land uses in a small watershed (12.10 km(2)) in the hilly area of purple soil at the upper reaches of the Yangtze River in southwestern China were investigated by using conventional statistics, geostatistics, and a geographical information system in order to provide information for land management and control of environmental issues. A total of 552 soil samples (0 to 15 cm) from 276 sites within the watershed were collected in April and August of 2011, and analyzed for soil total nitrogen (STN) and nitrate nitrogen (NO3-N). We compared spatial variations of STN and NO3-N under different land uses as well as the temporal variations in April (dry season) and August (rainy season). Results showed that STN contents were deeply affected by land-use types; median STN values ranged from 0.94 to 1.27 g center dot kg(-1), and STN contents decreased in the following order: paddy field > forestland > sloping cropland. No significant difference was found for STN contents between April and August under the same land use. However, NO3-N contents were 23.26, 10.58, and 26.19 mg center dot kg(-1) in April, and 1.34, 8.51, and 3.00 mg center dot kg(-1) in August for the paddy field, sloping cropland and forestland, respectively. Nugget ratios for STN indicated moderate spatial dependence in the paddy field and sloping cropland, and a strong spatial dependence in forestland. The processes of nitrogen movement, transformation, absorption of plant were deeply influenced by land use types; as a result, great changes of soil nitrogen levels at spatial and temporal scales were demonstrated in the studied watershed. |
| 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] | ORGANIC-CARBON ; IOWA SOILS ; VARIABILITY ; MINERALIZATION ; PHOSPHORUS ; AUSTRALIA ; SEDIMENT ; SYSTEMS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000319418700008 |
| 公开日期 | 2013-06-14 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/5393]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2013_Vol10 No.3 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.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Henan Polytech Univ, Jiaozuo 454000, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang Xiao-lin,Zhu Bo,Li Yi-ling. Spatial and temporal patterns of soil nitrogen distribution under different land uses in a watershed in the hilly area of purple soil, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2013,10(3):410-417. |
| APA | Yang Xiao-lin,Zhu Bo,&Li Yi-ling.(2013).Spatial and temporal patterns of soil nitrogen distribution under different land uses in a watershed in the hilly area of purple soil, China.JOURNAL OF MOUNTAIN SCIENCE,10(3),410-417. |
| MLA | Yang Xiao-lin,et al."Spatial and temporal patterns of soil nitrogen distribution under different land uses in a watershed in the hilly area of purple soil, China".JOURNAL OF MOUNTAIN SCIENCE 10.3(2013):410-417. |
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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