Net ecosystem carbon balance of an apple orchard

被引:50
作者
Zanotelli, Damiano [1 ]
Montagnani, Leonardo [1 ,2 ]
Manca, Giovanni [3 ]
Scandellari, Francesca [1 ]
Tagliavini, Massimo [1 ]
机构
[1] Free Univ Bolzano Bozen, Fac Sci & Technol, I-39100 Bolzano, Italy
[2] Forest Serv Autonomous Prov Bolzano Bozen, I-39100 Bolzano, Italy
[3] Joint Res Ctr European Commiss, Inst Environm & Sustainabil, Air & Climate Unit, Ispra, Italy
关键词
MALUS-DOMESTICA; USE EFFICIENCY; SOIL CARBON; MANAGEMENT; EXCHANGE; CO2; PHOTOSYNTHESIS; DECOMPOSITION; RESPIRATION; GRASSLANDS;
D O I
10.1016/j.eja.2014.12.002
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Fruit tree ecosystems represent an important land use type in Southern Europe. Nevertheless, limited information and large uncertainty currently exist about their potential role as a sink of atmospheric CO2, which is measured through an index that accounts for all inputs and outputs of C, namely the net ecosystem carbon balance (NECB). In this paper, we studied the fluxes of C assimilation, the C release and the lateral C and their contribution to the NECB in an apple orchard at different time scales. Data of net ecosystem productivity (NEP) were recorded by eddy covariance and converted into ecosystem respiration and gross primary productivity (GPP). The net primary productivity (NPP) and the C partitioning among tree organs were also biometrically assessed. The study was carried out in the period 2009-2012 in a commercial apple orchard located in an intensive fruit production district of South Tyrol, Italy. We found a positive NEP from March to October and yearly NEP values of 403 g Cm-2. GPP (1346 g Cm-2 year(-1) on average) was highest between May and September, when leaves intercepted the highest amount of PPFD. Tree growth accounted for more than 90% of the total new biomass produced in the orchard, the remaining part being represented by the herbaceous vegetation covering the orchard floor. Trees allocated to fruits approximately half of the yearly NPP, while they increased only to a limited extent their standing biomass. A significant fraction of NPP was also allocated to organs (leaves, pruned woody organs, etc.,) that feed the detritus cycle. The NECB was on average positive (69 g C m(-2)) but showed high variation among years, and in the year when fruit yields was very high (74 t fruits/ha), the NECB was even negative. NECB was accounted to a greater extent by the yearly increase of tree woody organs and to a minor extent by the C transfer to the soil from the decomposing litter. The most relevant agronomical suggestion of this study is that tree vegetative growth resulting into either increasing standing biomass and/or increasing tree litter should not be reduced if we aim at maintaining the CO2 sink capacity of the apple orchard. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:97 / 104
页数:8
相关论文
共 44 条
[1]   Simulating the impacts of land use in Northwest Europe on Net Ecosystem Exchange (NEE): The role of arable ecosystems, grasslands and forest plantations in climate change mitigation [J].
Abdalla, Mohamed ;
Saunders, Matthew ;
Hastings, Astley ;
Williams, Mike ;
Smith, Pete ;
Osborne, Bruce ;
Lanigan, Gary ;
Jones, Mike B. .
SCIENCE OF THE TOTAL ENVIRONMENT, 2013, 465 :325-336
[2]  
[Anonymous], 2014, CLIMATE CHANGE 2014, V80, P1
[3]  
[Anonymous], 2007, TECH REP MAX PLANCK
[4]   Daily photosynthetic radiation use efficiency for apple and pear leaves: Seasonal changes and estimation of canopy net carbon exchange rate [J].
Auzmendi, I. ;
Marsal, J. ;
Girona, J. ;
Lopez, G. .
EUROPEAN JOURNAL OF AGRONOMY, 2013, 51 :1-8
[5]   Breathing of the terrestrial biosphere: lessons learned from a global network of carbon dioxide flux measurement systems [J].
Baldocchi, Dennis .
AUSTRALIAN JOURNAL OF BOTANY, 2008, 56 (01) :1-26
[6]   Net CO2 and H2O fluxes of terrestrial ecosystems [J].
Buchmann, N ;
Schulze, ED .
GLOBAL BIOGEOCHEMICAL CYCLES, 1999, 13 (03) :751-760
[7]   Management effects on net ecosystem carbon and GHG budgets at European crop sites [J].
Ceschia, E. ;
Beziat, P. ;
Dejoux, J. F. ;
Aubinet, M. ;
Bernhofer, Ch. ;
Bodson, B. ;
Buchmann, N. ;
Carrara, A. ;
Cellier, P. ;
Di Tommasi, P. ;
Elbers, J. A. ;
Eugster, W. ;
Gruenwald, T. ;
Jacobs, C. M. J. ;
Jans, W. W. P. ;
Jones, M. ;
Kutsch, W. ;
Lanigan, G. ;
Magliulo, E. ;
Marloie, O. ;
Moors, E. J. ;
Moureaux, C. ;
Olioso, A. ;
Osborne, B. ;
Sanz, M. J. ;
Saunders, M. ;
Smith, P. ;
Soegaard, H. ;
Wattenbach, M. .
AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 2010, 139 (03) :363-383
[8]   Reconciling carbon-cycle concepts, terminology, and methods [J].
Chapin, F. S., III ;
Woodwell, G. M. ;
Randerson, J. T. ;
Rastetter, E. B. ;
Lovett, G. M. ;
Baldocchi, D. D. ;
Clark, D. A. ;
Harmon, M. E. ;
Schimel, D. S. ;
Valentini, R. ;
Wirth, C. ;
Aber, J. D. ;
Cole, J. J. ;
Goulden, M. L. ;
Harden, J. W. ;
Heimann, M. ;
Howarth, R. W. ;
Matson, P. A. ;
McGuire, A. D. ;
Melillo, J. M. ;
Mooney, H. A. ;
Neff, J. C. ;
Houghton, R. A. ;
Pace, M. L. ;
Ryan, M. G. ;
Running, S. W. ;
Sala, O. E. ;
Schlesinger, W. H. ;
Schulze, E. -D. .
ECOSYSTEMS, 2006, 9 (07) :1041-1050
[9]   The European carbon balance. Part 2: croplands [J].
Ciais, P. ;
Wattenbach, M. ;
Vuichard, N. ;
Smith, P. ;
Piao, S. L. ;
Don, A. ;
Luyssaert, S. ;
Janssens, I. A. ;
Bondeau, A. ;
Dechow, R. ;
Leip, A. ;
Smith, P. C. ;
Beer, C. ;
van der Werf, G. R. ;
Gervois, S. ;
Van Oost, K. ;
Tomelleri, E. ;
Freibauer, A. ;
Schulze, E. D. .
GLOBAL CHANGE BIOLOGY, 2010, 16 (05) :1409-1428
[10]   A WHOLE-TREE SYSTEM FOR GAS-EXCHANGE STUDIES [J].
CORELLIGRAPPADELLI, L ;
MAGNANINI, E .
HORTSCIENCE, 1993, 28 (01) :41-45