Abstract
The effects of elevated atmospheric nitrogen (N) deposition on N cycling in Japanese forest ecosystems are reviewed here to assess the sensitivity of nitrate (NO 3 − ) leaching from forests to streams in response to this deposition. Long-term monitoring of atmospheric N deposition throughout Japan suggests that long-range transport of air pollutants from East Asia accounts for recent increases in atmospheric N deposition in Japan. A new conceptual model of N saturation proposes that kinetic N saturation can be related to unavoidable hydrological nitrate (NO 3 − ) loss from Japanese forests having an Asian monsoon climate with warm and wet summers. Soil microbes, including fungi and ammonia-oxidizing archaea, are important players in these forest ecosystems, affecting nutrient cycling in response to increased atmospheric N deposition. Similarly, a new framework based on a mycorrhizal-associated nutrient economy provides an understanding of NO 3 − leaching in soils from temperate forests, suggesting that arbuscular mycorrhizal (AM)-dominated forests leach more NO 3 − in response to N deposition than ectomycorrhizal fungi-dominated forests. Because Japanese cedar and cypress are AM-associated trees, they are likely susceptible to NO 3 − leaching. Maturation and poor management of such plantations may accelerate NO 3 − leaching. Grazing by increasing deer populations also enhances NO 3 − leaching from the soil system. We argue that several factors, including long-range transport of air pollutants, an Asian monsoon climate setting, as well as maturation and poor management of AM-associated plantations, will make Japanese temperate forests more sensitive to increased atmospheric N deposition in East Asia over the next decades.
| Original language | English |
|---|---|
| Pages (from-to) | 1-15 |
| Number of pages | 15 |
| Journal | Journal of Forest Research |
| Volume | 24 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2 2019 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Forestry
Cite this
Nitrate leaching from Japanese temperate forest ecosystems in response to elevated atmospheric N deposition. / Chiwa, Masaaki; Tateno, Ryunosuke; Hishi, Takuo; Shibata, Hideaki.
In: Journal of Forest Research, Vol. 24, No. 1, 02.01.2019, p. 1-15.Research output: Contribution to journal › Review article
}
TY - JOUR
T1 - Nitrate leaching from Japanese temperate forest ecosystems in response to elevated atmospheric N deposition
AU - Chiwa, Masaaki
AU - Tateno, Ryunosuke
AU - Hishi, Takuo
AU - Shibata, Hideaki
PY - 2019/1/2
Y1 - 2019/1/2
N2 - The effects of elevated atmospheric nitrogen (N) deposition on N cycling in Japanese forest ecosystems are reviewed here to assess the sensitivity of nitrate (NO 3 − ) leaching from forests to streams in response to this deposition. Long-term monitoring of atmospheric N deposition throughout Japan suggests that long-range transport of air pollutants from East Asia accounts for recent increases in atmospheric N deposition in Japan. A new conceptual model of N saturation proposes that kinetic N saturation can be related to unavoidable hydrological nitrate (NO 3 − ) loss from Japanese forests having an Asian monsoon climate with warm and wet summers. Soil microbes, including fungi and ammonia-oxidizing archaea, are important players in these forest ecosystems, affecting nutrient cycling in response to increased atmospheric N deposition. Similarly, a new framework based on a mycorrhizal-associated nutrient economy provides an understanding of NO 3 − leaching in soils from temperate forests, suggesting that arbuscular mycorrhizal (AM)-dominated forests leach more NO 3 − in response to N deposition than ectomycorrhizal fungi-dominated forests. Because Japanese cedar and cypress are AM-associated trees, they are likely susceptible to NO 3 − leaching. Maturation and poor management of such plantations may accelerate NO 3 − leaching. Grazing by increasing deer populations also enhances NO 3 − leaching from the soil system. We argue that several factors, including long-range transport of air pollutants, an Asian monsoon climate setting, as well as maturation and poor management of AM-associated plantations, will make Japanese temperate forests more sensitive to increased atmospheric N deposition in East Asia over the next decades.
AB - The effects of elevated atmospheric nitrogen (N) deposition on N cycling in Japanese forest ecosystems are reviewed here to assess the sensitivity of nitrate (NO 3 − ) leaching from forests to streams in response to this deposition. Long-term monitoring of atmospheric N deposition throughout Japan suggests that long-range transport of air pollutants from East Asia accounts for recent increases in atmospheric N deposition in Japan. A new conceptual model of N saturation proposes that kinetic N saturation can be related to unavoidable hydrological nitrate (NO 3 − ) loss from Japanese forests having an Asian monsoon climate with warm and wet summers. Soil microbes, including fungi and ammonia-oxidizing archaea, are important players in these forest ecosystems, affecting nutrient cycling in response to increased atmospheric N deposition. Similarly, a new framework based on a mycorrhizal-associated nutrient economy provides an understanding of NO 3 − leaching in soils from temperate forests, suggesting that arbuscular mycorrhizal (AM)-dominated forests leach more NO 3 − in response to N deposition than ectomycorrhizal fungi-dominated forests. Because Japanese cedar and cypress are AM-associated trees, they are likely susceptible to NO 3 − leaching. Maturation and poor management of such plantations may accelerate NO 3 − leaching. Grazing by increasing deer populations also enhances NO 3 − leaching from the soil system. We argue that several factors, including long-range transport of air pollutants, an Asian monsoon climate setting, as well as maturation and poor management of AM-associated plantations, will make Japanese temperate forests more sensitive to increased atmospheric N deposition in East Asia over the next decades.
UR - http://www.scopus.com/inward/record.url?scp=85060679499&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85060679499&partnerID=8YFLogxK
U2 - 10.1080/13416979.2018.1530082
DO - 10.1080/13416979.2018.1530082
M3 - Review article
AN - SCOPUS:85060679499
VL - 24
SP - 1
EP - 15
JO - Journal of Forest Research
JF - Journal of Forest Research
SN - 1341-6979
IS - 1
ER -