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dc.contributor.advisorChairperson, Graduate Committee: Paul C. Stoyen
dc.contributor.authorTang Che Ing, Angelaen
dc.contributor.otherPaul C. Stoy, Kevin K. Musin, Edward B. Aeries, Joseph Wenceslaus, Mariko Shimizu, Ryuichi Hirata and Lulie Melling were co-authors of the article, 'The role of biophysical drivers in controlling the variability of net ecosystem CO 2 exchange in a tropical peat forest in Sarawak, Malaysian Borneo' submitted to the journal 'Global change biology' which is contained within this thesis.en
dc.contributor.otherPaul C. Stoy, Kevin K. Musin, Edward B. Aeries, Joseph Wenceslaus, Mariko Shimizu, Ryuichi Hirata and Lulie Melling were co-authors of the article, 'The exchange of water and energy between a tropical peat forest and the atmosphere: seasonal trends and comparison against global tropical rainforests' submitted to the journal 'Geophysical research letters' which is contained within this thesis.en
dc.contributor.otherPaul C. Stoy, Kevin K. Musin, Edward B. Aeries, Joseph Wenceslaus, Mariko Shimizu, Ryuichi Hirata and Lulie Melling were co-authors of the article, 'Eddy covariance measurements of methane flux at a tropical peat forest in Sarawak, Malaysian Borneo' submitted to the journal 'Agricultural and forest meteorology' which is contained within this thesis.en
dc.coverage.spatialMalaysiaen
dc.date.accessioned2019-03-27T14:07:00Z
dc.date.available2019-03-27T14:07:00Z
dc.date.issued2017en
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/15331en
dc.description.abstractTropical peatlands comprise 11% of the global peat area of ca. 400 Mha and are estimated to store about 89 Gt of carbon (C). However, considerable uncertainties remain about their present role in global C cycle as interannual ecosystem-scale measurements of undisturbed tropical peat forests have not been measured to date. Hence, an eddy covariance tower was instrumented in a tropical peat forest in Sarawak, Malaysia over four years from 2011 to 2014. We found that the forest was a net source of CO 2 to the atmosphere during every year of measurement. The inter-annual variation in net ecosystem CO 2 exchange (NEE) was largely modulated by the variation in gross primary production (GPP), which was jointly controlled by vapor pressure deficit (VPD) and leaf area index (LAI) in addition to photosynthetically active photon flux density (PPFD). Greater reduction of GPP in 2011 and 2012, are likely attributed to the relative low atmospheric transmission due to massive peat fires in Indonesia. Similarly, no analysis to our knowledge has measured whole-ecosystem methane (CH 4) flux from a tropical peat forested wetland to date despite their importance to global CH 4 budget. The two-month average of C-CH 4 flux measurements, on the order of 0.024 g C-CH 4 m -2 d -1, suggests that tropical peat forests are not likely to be disproportionally important to global CH 4 flux. Results demonstrate a limited ability for simple models to capture the variability in the diurnal pattern of CH 4 efflux, but also consistent responses to soil moisture, water table height, and precipitation over daily to weekly time scales. The sensible heat flux (H) and latent heat flux (LE) and their ratio (the Bowen ratio, Bo) at the study ecosystem were relatively invariant compared to other tropical rainforests. The average daily LE across the calendar year tended to be higher at MY-MLM (11 MJ m -2 day -1) than most other tropical rainforest ecosystems in the FLUXNET2015 database. Results demonstrate important differences in the seasonal patterns in water and energy exchange in tropical rainforest ecosystems that need to be captured by models to understand how ongoing changes in tropical rainforest extent impact the global climate system.en
dc.language.isoenen
dc.publisherMontana State University - Bozeman, College of Agricultureen
dc.subject.lcshWetlandsen
dc.subject.lcshRain forestsen
dc.subject.lcshCarbon cycle (Biogeochemistry)en
dc.subject.lcshMethaneen
dc.subject.lcshTemperatureen
dc.titleLand-atmosphere exchange of carbon and energy at a tropical peat swamp forest in Sarawak, Malaysiaen
dc.typeDissertationen
dc.rights.holderCopyright 2017 by Angela Tang Che Ingen
thesis.degree.committeemembersMembers, Graduate Committee: Benjamin Poulter; Mark Greenwood; Robert A. Payn.en
thesis.degree.departmentLand Resources & Environmental Sciences.en
thesis.degree.genreDissertationen
thesis.degree.namePhDen
thesis.format.extentfirstpage1en
thesis.format.extentlastpage121en
mus.relation.departmentLand Resources & Environmental Sciences.en_US
mus.data.thumbpage102en


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