title: The atmospheric chemistry of trace gases and particulate matter emitted by different land uses in Borneo.
abstract: We report measurements of atmospheric composition over a tropical rainforest and over a nearby oil palm plantation in Sabah, Borneo. The primary vegetation in each of the two landscapes emits very different amounts and kinds of volatile organic compounds (VOCs), resulting in distinctive VOC fingerprints in the atmospheric boundary layer for both landscapes. VOCs over the Borneo rainforest are dominated by isoprene and its oxidation products, with a significant additional contribution from monoterpenes. Rather than consuming the main atmospheric oxidant, OH, these high concentrations of VOCs appear to maintain OH, as has been observed previously over Amazonia. The boundary-layer characteristics and mixing ratios of VOCs observed over the Borneo rainforest are different to those measured previously over Amazonia. Compared with the Bornean rainforest, air over the oil palm plantation contains much more isoprene, monoterpenes are relatively less important, and the flower scent, estragole, is prominent. Concentrations of nitrogen oxides are greater above the agro-industrial oil palm landscape than over the rainforest, and this leads to changes in some secondary pollutant mixing ratios (but not, currently, differences in ozone). Secondary organic aerosol over both landscapes shows a significant contribution from isoprene. Primary biological aerosol dominates the super-micrometre aerosol over the rainforest and is likely to be sensitive to land-use change, since the fungal source of the bioaerosol is closely linked to above-ground biodiversity.
authors: Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK. A.R.MacKenzie@bham.ac.uk
authors: A R
authors: AR
authors: MacKenzie
authors: B
authors: B
authors: Langford
authors: T A M
authors: TA
authors: Pugh
authors: N
authors: N
authors: Robinson
authors: P K
authors: PK
authors: Misztal
authors: D E
authors: DE
authors: Heard
authors: J D
authors: JD
authors: Lee
authors: A C
authors: AC
authors: Lewis
authors: C E
authors: CE
authors: Jones
authors: J R
authors: JR
authors: Hopkins
authors: G
authors: G
authors: Phillips
authors: P S
authors: PS
authors: Monks
authors: A
authors: A
authors: Karunaharan
authors: K E
authors: KE
authors: Hornsby
authors: V
authors: V
authors: Nicolas-Perea
authors: H
authors: H
authors: Coe
authors: A M
authors: AM
authors: Gabey
authors: M W
authors: MW
authors: Gallagher
authors: L K
authors: LK
authors: Whalley
authors: P M
authors: PM
authors: Edwards
authors: M J
authors: MJ
authors: Evans
authors: D
authors: D
authors: Stone
authors: T
authors: T
authors: Ingham
authors: R
authors: R
authors: Commane
authors: K L
authors: KL
authors: Furneaux
authors: J B
authors: JB
authors: McQuaid
authors: E
authors: E
authors: Nemitz
authors: Yap Kok
authors: YK
authors: Seng
authors: D
authors: D
authors: Fowler
authors: J A
authors: JA
authors: Pyle
authors: C N
authors: CN
authors: Hewitt
mesh_terms: D000336:Aerosols / Q000737:chemistry; D000383:Agriculture; D000393:Air Pollutants / Q000737:chemistry; D000401:Aircraft; D000081248:Allylbenzene Derivatives; D000840:Anisoles / Q000737:chemistry; D028023:Arecaceae / Q000737:chemistry / Q000502:physiology; D001272:Atmosphere / Q000032:analysis / Q000737:chemistry*; D001893:Borneo; D002070:Butadienes / Q000737:chemistry; D002244:Carbon / Q000737:chemistry; D045782:Hemiterpenes / Q000737:chemistry; D017665:Hydroxyl Radical / Q000737:chemistry; D007221:Industry; D008296:Malaysia; D039821:Monoterpenes / Q000737:chemistry; D009589:Nitrogen Oxides / Q000737:chemistry; D010126:Ozone / Q000737:chemistry; D010420:Pentanes / Q000737:chemistry; D010777:Photochemistry; D014197:Trees / Q000737:chemistry* / Q000502:physiology; D055549:Volatile Organic Compounds / Q000737:chemistry
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D000081248:Allylbenzene Derivatives; D000840:Anisoles; D002070:Butadienes; D045782:Hemiterpenes; D039821:Monoterpenes; D009589:Nitrogen Oxides; D010420:Pentanes; D055549:Volatile Organic Compounds; C005059:isoprene; D017665:Hydroxyl Radical; D010126:Ozone; D002244:Carbon; C007633:estragole