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Article: The effects of annual harvesting on the subsequent phytomass and species composition of grassland and fernland: A Hong Kong case

TitleThe effects of annual harvesting on the subsequent phytomass and species composition of grassland and fernland: A Hong Kong case
Authors
KeywordsFernland
Grassland
Hong Kong
Phytomass harvesting
Species composition
Issue Date2004
PublisherBlackwell Publishing Asia. The Journal's web site is located at http://www.blackwellpublishing.com/journals/SJTG
Citation
Singapore Journal Of Tropical Geography, 2004, v. 25 n. 1, p. 77-91 How to Cite?
AbstractAnthropogenic grasslands mixed with fern and shrubland, on scales from metres to kilometres, are widespread in tropical Southeast Asia, and especially in southern China and adjoining regions where harvesting for domestic fuel is a major factor in their maintenance. Baseline surveys in grassland and fernland in 1989-90 and resurveys in 2001 of three 6 × 20 m plots in Wong Chuk Yuen, Hong Kong, showed substantial change in species composition and total aboveground phytomass as a result of annual harvesting, with more pronounced change in the fernland. Under harvesting pressure, the species composition of the grassland changed considerably, though the proportions of the various life-forms did not. Ischaemum spp. and Miscanthus floridulus increased whereas Themeda gigantea died out while the proportion of other grass species remained much the same. Under the same regime the species composition and life-forms of the fernland changed markedly. The proportion of Dicranopteris fern dropped substantially, though still comprising a third of the phytomass by 2001. The shrub Melastoma survived harvesting. A firebreak cut in the fernland became grassy under annual harvesting and remained grassy six years after cutting ceased. The annual harvests from the growth-years 1991-2000 showed a substantial though variable increase in total phytomass. Analyses relating harvested phytomass with various climatic parameters showed no significant correlations. Some possible reasons for this are suggested. Although annual harvesting was clearly sustainable over the ten years of observation, the question of continued sustainability on sites harvested for centuries, the situation in much of southern China and parts of upland mainland Southeast Asia, remains unresolved. © 2004 Department of Geography, National University of Singapore and Blackwell Publishers Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/86294
ISSN
2015 Impact Factor: 1.085
2015 SCImago Journal Rankings: 1.042
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHill, RDen_HK
dc.contributor.authorPeart, MRen_HK
dc.contributor.authorGuan, DSen_HK
dc.date.accessioned2010-09-06T09:15:07Z-
dc.date.available2010-09-06T09:15:07Z-
dc.date.issued2004en_HK
dc.identifier.citationSingapore Journal Of Tropical Geography, 2004, v. 25 n. 1, p. 77-91en_HK
dc.identifier.issn0129-7619en_HK
dc.identifier.urihttp://hdl.handle.net/10722/86294-
dc.description.abstractAnthropogenic grasslands mixed with fern and shrubland, on scales from metres to kilometres, are widespread in tropical Southeast Asia, and especially in southern China and adjoining regions where harvesting for domestic fuel is a major factor in their maintenance. Baseline surveys in grassland and fernland in 1989-90 and resurveys in 2001 of three 6 × 20 m plots in Wong Chuk Yuen, Hong Kong, showed substantial change in species composition and total aboveground phytomass as a result of annual harvesting, with more pronounced change in the fernland. Under harvesting pressure, the species composition of the grassland changed considerably, though the proportions of the various life-forms did not. Ischaemum spp. and Miscanthus floridulus increased whereas Themeda gigantea died out while the proportion of other grass species remained much the same. Under the same regime the species composition and life-forms of the fernland changed markedly. The proportion of Dicranopteris fern dropped substantially, though still comprising a third of the phytomass by 2001. The shrub Melastoma survived harvesting. A firebreak cut in the fernland became grassy under annual harvesting and remained grassy six years after cutting ceased. The annual harvests from the growth-years 1991-2000 showed a substantial though variable increase in total phytomass. Analyses relating harvested phytomass with various climatic parameters showed no significant correlations. Some possible reasons for this are suggested. Although annual harvesting was clearly sustainable over the ten years of observation, the question of continued sustainability on sites harvested for centuries, the situation in much of southern China and parts of upland mainland Southeast Asia, remains unresolved. © 2004 Department of Geography, National University of Singapore and Blackwell Publishers Ltd.en_HK
dc.languageengen_HK
dc.publisherBlackwell Publishing Asia. The Journal's web site is located at http://www.blackwellpublishing.com/journals/SJTGen_HK
dc.relation.ispartofSingapore Journal of Tropical Geographyen_HK
dc.subjectFernlanden_HK
dc.subjectGrasslanden_HK
dc.subjectHong Kongen_HK
dc.subjectPhytomass harvestingen_HK
dc.subjectSpecies compositionen_HK
dc.titleThe effects of annual harvesting on the subsequent phytomass and species composition of grassland and fernland: A Hong Kong caseen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0129-7619&volume=25&issue=1&spage=77&epage=91&date=2004&atitle=The+effects+of+annual+harvesting+on+the+subsequent+phytomass+and+species+composition+of+grassland+and+fernland:+a+Hong+Kong+caseen_HK
dc.identifier.emailPeart, MR:mrpeart@hkucc.hku.hken_HK
dc.identifier.authorityPeart, MR=rp00612en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1111/j.0129-7619.2004.00174.xen_HK
dc.identifier.scopuseid_2-s2.0-1942485309en_HK
dc.identifier.hkuros86223en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-1942485309&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume25en_HK
dc.identifier.issue1en_HK
dc.identifier.spage77en_HK
dc.identifier.epage91en_HK
dc.identifier.isiWOS:000220431000008-
dc.publisher.placeAustraliaen_HK
dc.identifier.scopusauthoridHill, RD=7404752711en_HK
dc.identifier.scopusauthoridPeart, MR=7003362850en_HK
dc.identifier.scopusauthoridGuan, DS=7101724286en_HK

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