Temporal variation in CO2 efflux from soil and snow surfaces in a Japanese cedar (Cryptomeria japonica) plantation, central Japan

Mi Sun Lee, Jae Seok Lee, Hiroshi Koizumi

研究成果: Article

22 引用 (Scopus)

抄録

CO2 efflux from soil and snow surfaces was measured continuously in a Japanese cedar (Cryptomeria japonica D. Don) forest in central Japan using an open dynamic chamber system. The chamber opens and closes automatically and records measurements based on an open-flow dynamic method. Between May and December, mean soil CO2 efflux ranged from 1,529 mg CO2 m-2 h-1 in September to 255 mg CO2 m -2 h-1 in December. The seasonal change in CO2 efflux from the soil paralleled the seasonal pattern of soil temperature. No marked diurnal trends in soil CO2 efflux were observed on days without rainfall, whereas significant pulses in soil CO2 efflux were observed on days with rainfall. In this plantation, soil CO2 efflux frequently responded to rainfall. Measurements of changes from litter-covered soil to snow-covered surfaces revealed that CO2 efflux decreased from values of ca. 250 mg CO2 m-2 h-1 above soil to less than 33 mg CO2 m-2 h-1 above snow. Soil temperature alone explained 66% of the overall variation in soil CO2 efflux, but explained approximately 85% of the variation when data from two anomalous periods were excluded. Moreover, we found a significant correlation between soil CO2 efflux and soil moisture (which explained 44% of the overall variation) using a second-order polynomial function. Our results suggest that the seasonality of CO2 efflux is affected not only by soil temperature and moisture, but also by drying and rewetting cycles and by litterfall pulses.

元の言語English
ページ(範囲)777-785
ページ数9
ジャーナルEcological Research
23
発行部数4
DOI
出版物ステータスPublished - 2008 7
外部発表Yes

Fingerprint

Cryptomeria japonica
snow
temporal variation
plantation
plantations
Japan
soil
soil temperature
rain
rainfall
soil moisture
soil water
rewetting
litterfall
seasonality
litter
drying
seasonal variation

ASJC Scopus subject areas

  • Ecology

これを引用

Temporal variation in CO2 efflux from soil and snow surfaces in a Japanese cedar (Cryptomeria japonica) plantation, central Japan. / Lee, Mi Sun; Lee, Jae Seok; Koizumi, Hiroshi.

:: Ecological Research, 巻 23, 番号 4, 07.2008, p. 777-785.

研究成果: Article

@article{4ca00f862241447792bed89a69c04cc4,
title = "Temporal variation in CO2 efflux from soil and snow surfaces in a Japanese cedar (Cryptomeria japonica) plantation, central Japan",
abstract = "CO2 efflux from soil and snow surfaces was measured continuously in a Japanese cedar (Cryptomeria japonica D. Don) forest in central Japan using an open dynamic chamber system. The chamber opens and closes automatically and records measurements based on an open-flow dynamic method. Between May and December, mean soil CO2 efflux ranged from 1,529 mg CO2 m-2 h-1 in September to 255 mg CO2 m -2 h-1 in December. The seasonal change in CO2 efflux from the soil paralleled the seasonal pattern of soil temperature. No marked diurnal trends in soil CO2 efflux were observed on days without rainfall, whereas significant pulses in soil CO2 efflux were observed on days with rainfall. In this plantation, soil CO2 efflux frequently responded to rainfall. Measurements of changes from litter-covered soil to snow-covered surfaces revealed that CO2 efflux decreased from values of ca. 250 mg CO2 m-2 h-1 above soil to less than 33 mg CO2 m-2 h-1 above snow. Soil temperature alone explained 66{\%} of the overall variation in soil CO2 efflux, but explained approximately 85{\%} of the variation when data from two anomalous periods were excluded. Moreover, we found a significant correlation between soil CO2 efflux and soil moisture (which explained 44{\%} of the overall variation) using a second-order polynomial function. Our results suggest that the seasonality of CO2 efflux is affected not only by soil temperature and moisture, but also by drying and rewetting cycles and by litterfall pulses.",
keywords = "Japanese cedar plantation, Q value, Snow surface, Soil moisture, Soil temperature",
author = "Lee, {Mi Sun} and Lee, {Jae Seok} and Hiroshi Koizumi",
year = "2008",
month = "7",
doi = "10.1007/s11284-007-0439-z",
language = "English",
volume = "23",
pages = "777--785",
journal = "Ecological Research",
issn = "0912-3814",
publisher = "Springer Japan",
number = "4",

}

TY - JOUR

T1 - Temporal variation in CO2 efflux from soil and snow surfaces in a Japanese cedar (Cryptomeria japonica) plantation, central Japan

AU - Lee, Mi Sun

AU - Lee, Jae Seok

AU - Koizumi, Hiroshi

PY - 2008/7

Y1 - 2008/7

N2 - CO2 efflux from soil and snow surfaces was measured continuously in a Japanese cedar (Cryptomeria japonica D. Don) forest in central Japan using an open dynamic chamber system. The chamber opens and closes automatically and records measurements based on an open-flow dynamic method. Between May and December, mean soil CO2 efflux ranged from 1,529 mg CO2 m-2 h-1 in September to 255 mg CO2 m -2 h-1 in December. The seasonal change in CO2 efflux from the soil paralleled the seasonal pattern of soil temperature. No marked diurnal trends in soil CO2 efflux were observed on days without rainfall, whereas significant pulses in soil CO2 efflux were observed on days with rainfall. In this plantation, soil CO2 efflux frequently responded to rainfall. Measurements of changes from litter-covered soil to snow-covered surfaces revealed that CO2 efflux decreased from values of ca. 250 mg CO2 m-2 h-1 above soil to less than 33 mg CO2 m-2 h-1 above snow. Soil temperature alone explained 66% of the overall variation in soil CO2 efflux, but explained approximately 85% of the variation when data from two anomalous periods were excluded. Moreover, we found a significant correlation between soil CO2 efflux and soil moisture (which explained 44% of the overall variation) using a second-order polynomial function. Our results suggest that the seasonality of CO2 efflux is affected not only by soil temperature and moisture, but also by drying and rewetting cycles and by litterfall pulses.

AB - CO2 efflux from soil and snow surfaces was measured continuously in a Japanese cedar (Cryptomeria japonica D. Don) forest in central Japan using an open dynamic chamber system. The chamber opens and closes automatically and records measurements based on an open-flow dynamic method. Between May and December, mean soil CO2 efflux ranged from 1,529 mg CO2 m-2 h-1 in September to 255 mg CO2 m -2 h-1 in December. The seasonal change in CO2 efflux from the soil paralleled the seasonal pattern of soil temperature. No marked diurnal trends in soil CO2 efflux were observed on days without rainfall, whereas significant pulses in soil CO2 efflux were observed on days with rainfall. In this plantation, soil CO2 efflux frequently responded to rainfall. Measurements of changes from litter-covered soil to snow-covered surfaces revealed that CO2 efflux decreased from values of ca. 250 mg CO2 m-2 h-1 above soil to less than 33 mg CO2 m-2 h-1 above snow. Soil temperature alone explained 66% of the overall variation in soil CO2 efflux, but explained approximately 85% of the variation when data from two anomalous periods were excluded. Moreover, we found a significant correlation between soil CO2 efflux and soil moisture (which explained 44% of the overall variation) using a second-order polynomial function. Our results suggest that the seasonality of CO2 efflux is affected not only by soil temperature and moisture, but also by drying and rewetting cycles and by litterfall pulses.

KW - Japanese cedar plantation

KW - Q value

KW - Snow surface

KW - Soil moisture

KW - Soil temperature

UR - http://www.scopus.com/inward/record.url?scp=46749103404&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=46749103404&partnerID=8YFLogxK

U2 - 10.1007/s11284-007-0439-z

DO - 10.1007/s11284-007-0439-z

M3 - Article

AN - SCOPUS:46749103404

VL - 23

SP - 777

EP - 785

JO - Ecological Research

JF - Ecological Research

SN - 0912-3814

IS - 4

ER -