Rapid Increase and Long-Term Slow Decrease in Soil C stock Due to Agricultural Development in Hokkaido Tokachi District
| Autor: | Mina Koshimizu, Katsufumi Wakabayashi, Katsuhisa Niwa, Seiji Shimoda |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
land use change
010504 meteorology & atmospheric sciences Geography Planning and Development TJ807-830 Management Monitoring Policy and Law TD194-195 01 natural sciences Renewable energy sources agricultural development Agricultural land Temperate climate Ecosystem Land use land-use change and forestry GE1-350 soil carbon 0105 earth and related environmental sciences Environmental effects of industries and plants Renewable Energy Sustainability and the Environment Soil classification 04 agricultural and veterinary sciences Soil carbon plant residue Crop rotation Manure Environmental sciences climate change Agronomy 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science |
| Zdroj: | SC30201904090005 NARO成果DBa Sustainability, Vol 10, Iss 12, p 4587 (2018) |
| ISSN: | 2071-1050 |
| Popis: | Soil properties and functions are dramatically altered by changes in agricultural land use. However, little is known about how ecosystem C stock and its partitioning change with deforestation for agricultural land use, especially in cold humid areas. In this study, we investigated how agricultural development influences temporal changes in soil C pools in upland crop fields using a paired-plot approach. Ten pairs of control forest and agricultural development plots (2 to more than 80 years) were selected with the same crop rotation under humid temperate climate in Northeast Japan. We detected a net gain in soil C during the first 2 years of agricultural land development under the flat field condition. This gain in soil C was caused by an increase in the light fraction soil C, which represents plant residue derived-C due to agricultural development. Agricultural development resulted in the loss of soil C in fields without manure application. There was no difference in the ecosystem C stock among soil types or with the amount of manure applied. Agricultural development resulted in a slow decrease in soil C storage, indicating a slow rate of C decomposition under cool climate conditions. |
| Databáze: | OpenAIRE |
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