Comparison of impacts of human activities and climate change on water quantity and quality in Finnish agricultural catchments
文献类型：期刊论文
| 作者 | Rankinen, K.; Gao, G.; Granlund, K.; Gronroos, J.; Vesikko, L. |
| 刊名 | LANDSCAPE ECOLOGY
 |
| 出版日期 | 2015-03 |
| 卷号 | 30期号:3页码:415-428 |
| 关键词 | Agricultural policy Climate change Suspended sediment Phosphorus Reduced tillage Load calculation Trend analysis |
| 英文摘要 | We studied the influence of human activities and climate change on water quantity and quality. Human activities included methods of agricultural policy, i.e. land use and management practices. Finland started to follow EU's agricultural policy in 1995. In this study our main objective was to find out whether the original targets of the Finnish Agri-Environmental Programme (FAEP) were achieved. We analyzed trends in discharge, water quality and climate parameters in 37 years long time-series in two catchments. We focused on the suspended sediment and phosphorus concentrations and loads, the main interests to FAEP. We found an increasing trend in mean annual temperature, especially in spring and late summer-early autumn. There was no statistical significant change in annual runoff. Increasing winter runoff in the other catchment could be explained by the increased number of days when temperature was above zero degrees making snowmelt possible. In this area high potential sediment delivery occurred in early winter. FAEP succeeded in decreasing the suspended sediment load by reduced tillage and wintertime vegetation cover. In controlling the phosphorus loads FAEP succeeded only in the catchment with erosion sensitive soils. In the catchment where soils were less sensitive for erosion increase in the dissolved reactive phosphorus load exceeded the benefits of the reduced particulate phosphorus load. Climate change may increase the suspended sediment load by increasing winter runoff. Even then, instead of decreasing the suspended sediment loads FAEP should rather focus on dissolved nutrients as they cause eutrophication in receiving waters. |
| 研究领域[WOS] | Ecology ; Geography, Physical ; Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000350227000004 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32279]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Rankinen, K.,Gao, G.,Granlund, K.,et al. Comparison of impacts of human activities and climate change on water quantity and quality in Finnish agricultural catchments[J]. LANDSCAPE ECOLOGY,2015,30(3):415-428. |
| APA | Rankinen, K.,Gao, G.,Granlund, K.,Gronroos, J.,&Vesikko, L..(2015).Comparison of impacts of human activities and climate change on water quantity and quality in Finnish agricultural catchments.LANDSCAPE ECOLOGY,30(3),415-428. |
| MLA | Rankinen, K.,et al."Comparison of impacts of human activities and climate change on water quantity and quality in Finnish agricultural catchments".LANDSCAPE ECOLOGY 30.3(2015):415-428. |
入库方式： OAI收割
来源：生态环境研究中心
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