Annual balances and extended seasonal modelling of carbon fluxes from a temperate fen cropped to festulolium and tall fescue under two-cut and three-cut harvesting regimes

被引:10
作者
Kandel, Tanka P. [1 ]
Elsgaard, Lars [1 ]
Laerke, Poul E. [1 ]
机构
[1] Aarhus Univ, Dept Agroecol, POB 50, DK-8830 Tjele, Denmark
来源
GLOBAL CHANGE BIOLOGY BIOENERGY | 2017年 / 9卷 / 12期
关键词
ecosystem respiration; flux modelling; gross primary production; net ecosystem carbon balance; net ecosystem exchange; peat soil; perennial grasses; REED CANARY GRASS; GREENHOUSE-GAS EMISSIONS; NET ECOSYSTEM EXCHANGE; CO2; FLUX; SOIL RESPIRATION; ELEVATED-TEMPERATURE; BIOMASS PRODUCTION; USE EFFICIENCY; METHANE YIELD; PEAT SOILS;
D O I
10.1111/gcbb.12424
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
This study reports the annual carbon balance of a drained riparian fen under two-cut or three-cut managements of festulolium and tall fescue. CO2 fluxes measured with closed chambers were partitioned into gross primary production (GPP) and ecosystem respiration (ER) for modelling according to environmental factors (light and temperature) and canopy reflectance (ratio vegetation index, RVI). Methodological assessments were made of (i) GPP models with or without temperature functions (Ft) to adjust GPP constraints imposed by low temperature (< 10 degrees C) and (ii) ER models with RVI or GPP parameters as biomass proxies. The sensitivity of the models was also tested on partial datasets including only alternate measurement campaigns and on datasets only from the crop growing period. Use of Ft in GPP models effectively corrected GPP overestimation in cold periods, and this approach was used throughout. Annual fluxes obtained with ER models including RVI or GPP parameters were similar, and also annual GPP and ER fluxes obtained with full and partial datasets were similar. Annual CO2 fluxes and biomass yield were not significantly different in the crop/management combinations although the individual collars (n = 12) showed some variations in GPP (-1818 to -2409g CO2-C m(-2)), ER (1071 to 1738g CO2-C m(-2)), net ecosystem exchange (NEE, -669 to -949g CO2-C m(-2)) and biomass yield (556 to 1044g CO2-C m(-2)). Net ecosystem carbon balance (NECB), as the sum of NEE and biomass carbon export, was only slightly negative to positive in all crop/management combinations. NECBs, interpreted as emission factors, tended to favour the least biomass producing systems as the best management options in relation to climate saving carbon balances. Yet, considering the down-stream advantages of biomass for fossil fuel replacement, yield-scaled carbon fluxes are suggested to be given additional considerations for comparison of management options in terms of atmospheric impact.
引用
收藏
页码:1690 / 1706
页数:17
相关论文
共 50 条
  • [1] Ensiling as biological pretreatment of grass (Festulolium Hykor): The effect of composition, dry matter, and inocula on cellulose convertibility
    Ambye-Jensen, Morten
    Johansen, Katja S.
    Didion, Thomas
    Kadar, Zsofia
    Schmidt, Jens E.
    Meyer, Anne S.
    [J]. BIOMASS & BIOENERGY, 2013, 58 : 303 - 312
  • [2] Soil compaction limits root development, radiation-use efficiency and yield of three winter wheat (Triticum aestivum L.) cultivars
    Andersen, Mathias N.
    Munkholm, Lars J.
    Nielsen, A. Lisbeth
    [J]. ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE, 2013, 63 (05) : 409 - 419
  • [3] Effects of land use intensity on the full greenhouse gas balance in an Atlantic peat bog
    Beetz, S.
    Liebersbach, H.
    Glatzel, S.
    Jurasinski, G.
    Buczko, U.
    Hoeper, H.
    [J]. BIOGEOSCIENCES, 2013, 10 (02) : 1067 - 1082
  • [4] Distribution and cultivation intensity of agricultural peat and gyttja soils in Sweden and estimation of greenhouse gas emissions from cultivated peat soils
    Berglund, O.
    Berglund, K.
    [J]. GEODERMA, 2010, 154 (3-4) : 173 - 180
  • [5] Cocksfoot, tall fescue and reed canary grass: Dry matter yield, chemical composition and biomass convertibility to methane
    Butkute, B.
    Lemeziene, N.
    Kanapeckas, J.
    Navickas, K.
    Dabkevicius, Z.
    Venslauskas, K.
    [J]. BIOMASS & BIOENERGY, 2014, 66 : 1 - 11
  • [6] Net ecosystem exchange of CO2 and carbon balance for eight temperate organic soils under agricultural management
    Elsgaard, Lars
    Gorres, Carolyn-Monika
    Hoffmann, Carl Christian
    Blicher-Mathiesen, Gitte
    Schelde, Kirsten
    Petersen, Soren O.
    [J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 2012, 162 : 52 - 67
  • [7] Carbon assimilation and allocation (13C labeling) in a boreal perennial grass (Phalaris arundinacea) subjected to elevated temperature and CO2 through a growing season
    Ge, Zhen-Ming
    Zhou, Xiao
    Kellomaki, Seppo
    Biasi, Christina
    Wang, Kai-Yun
    Peltola, Heli
    Martikainen, Pertti J.
    [J]. ENVIRONMENTAL AND EXPERIMENTAL BOTANY, 2012, 75 : 150 - 158
  • [8] Ghesquière M, 2010, HANDB PLANT BREED, V5, P293, DOI 10.1007/978-1-4419-0760-8_12
  • [9] Integration of CO2 flux and remotely-sensed data for primary production and ecosystem respiration analyses in the Northern Great Plains:: potential for quantitative spatial extrapolation
    Gilmanov, TG
    Tieszen, LL
    Wylie, BK
    Flanagan, LB
    Frank, AB
    Haferkamp, MR
    Meyers, TP
    Morgan, JA
    [J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY, 2005, 14 (03): : 271 - 292
  • [10] Comparative modeling of annual CO2 flux of temperate peat soils under permanent grassland management
    Gorres, C. M.
    Kutzbach, L.
    Elsgaard, L.
    [J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 2014, 186 : 64 - 76