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Land Use Alters the Plant-Derived Carbon and Nitrogen Pools in Terraced Rice Paddies in a Mountain Village

Author

Listed:
  • Seiji Shimoda

    (Memuro Research Station, Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization (NARO/HARC/M), Shinsei, Memuro, Kasai, Hokkaido 082-0081, Japan)

  • Tomoyo F. Koyanagi

    (Field Studies Institute for Environmental Education, Tokyo Gakugei University, 4-1-1 Nukuikitamachi, Koganeishi, Tokyo 184-0015, Japan)

Abstract

In Japan, terraced paddies in mountain villages are symbolic of the traditional landscape, but they are gradually being abandoned. To compare plant-derived C and N among land uses, we compared adjacent forest floor (FF), agricultural paddy (AP), and post-agricultural paddy (PP) sites. Long-term litter accumulation could explain the significantly higher litter C and belowground biomass C in FF than in AP and PP. The low-density-fraction (LF) soil C was significantly higher in FF than in PP and better reflected land use than the whole-soil C. The AP soil held more N than FF and PP at 20–30 cm, associated with higher LF soil N. Periodic tillage in AP maintains the LF soil N, but N supplied to the surface soil reduced with depth following abandonment. Differences in recycling of organic matter and nutrients among land uses are crucial to plant-derived C and N contents of soil.

Suggested Citation

  • Seiji Shimoda & Tomoyo F. Koyanagi, 2017. "Land Use Alters the Plant-Derived Carbon and Nitrogen Pools in Terraced Rice Paddies in a Mountain Village," Sustainability, MDPI, vol. 9(11), pages 1-10, October.
    • Handle: RePEc:gam:jsusta:v:9:y:2017:i:11:p:1973-:d:116816
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    Cited by:

    1. Ye Yuan & Xueyi Shi & Zhongqiu Zhao, 2018. "Land Use Types and Geomorphic Settings Reflected in Soil Organic Carbon Distribution at the Scale of Watershed," Sustainability, MDPI, vol. 10(10), pages 1-12, September.
    2. Seiji Shimoda & Katsufumi Wakabayashi & Mina Koshimizu & Katsuhisa Niwa, 2018. "Rapid Increase and Long-Term Slow Decrease in Soil C stock Due to Agricultural Development in Hokkaido Tokachi District," Sustainability, MDPI, vol. 10(12), pages 1-11, December.

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