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Article: Spatial differentiation and landscape-ecological assessment of heritage trees in urban Guangzhou (China)

TitleSpatial differentiation and landscape-ecological assessment of heritage trees in urban Guangzhou (China)
Authors
KeywordsChina
Guangzhou
Heritage trees
Landscape assessment
Tree conservation
Urban forest
Urban trees
Issue Date2004
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/landurbplan
Citation
Landscape And Urban Planning, 2004, v. 69 n. 1, p. 51-68 How to Cite?
AbstractRecent rapid urbanization of Guangzhou in south China has degraded its rich urban-tree endowment, scattered in roadside, park, and public and semi-public grounds. Based mainly on age, 384 outstanding trees of 25 species were officially designated as heritage specimens. They were evaluated in the field for tree dimensions and habitat types to establish landscape-ecological impacts and spatial differentiation by districts and landuses. To aid the analysis, new quantitative indices were developed, namely landscape-ecological value (LEV), biomass-landscape congruence (BLC), and species spatial differentiation (SSD), respectively, for species presence, abundance, fidelity and clustering. Cultivated natives and five common species dominated heritage trees, accompanied by 11 rare and 9 single ones. Comparisons between the urban- and the heritage-tree populations, and between the LEV of individual species, indicated the uniqueness of heritage species composition and relative landscape-ecological contributions of species groups. Tree count, LEV and species diversity increased markedly with district age, culminating in the second oldest district and then declined somewhat in the oldest; species richness peaked in the mature district and dropped in the old and oldest. Older districts had a narrow range of similarly stressful habitats accommodating mainly inherited old trees; mature districts had more diversified habitats and a dual provenance of inheritance plus recent recruits; young districts had few of both types. Stressful roadside landuse was dominated by tree count, but it was poor in species diversity and richness, and had a rather monotonous native-foliage character. Park provided ample opportunities for a complex species cohort of disparate geographical origin, dimension, age, and amenity function, but its species diversity fell short of expectations. The public and semi-public grounds harboured mainly common species except religious grounds which had higher species diversity and some notably large and unique trees. BLC and SSD results echoed the differential operation of environmental and human influences on tree biomass, configuration and landscape impacts, resulting in notable variations between districts and landuses. The management implications of the results and prognosis for the future of urban heritage trees were explored with reference to Guangzhou and other cities. © 2003 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/86393
ISSN
2015 Impact Factor: 3.654
2015 SCImago Journal Rankings: 1.699
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorJim, CYen_HK
dc.date.accessioned2010-09-06T09:16:15Z-
dc.date.available2010-09-06T09:16:15Z-
dc.date.issued2004en_HK
dc.identifier.citationLandscape And Urban Planning, 2004, v. 69 n. 1, p. 51-68en_HK
dc.identifier.issn0169-2046en_HK
dc.identifier.urihttp://hdl.handle.net/10722/86393-
dc.description.abstractRecent rapid urbanization of Guangzhou in south China has degraded its rich urban-tree endowment, scattered in roadside, park, and public and semi-public grounds. Based mainly on age, 384 outstanding trees of 25 species were officially designated as heritage specimens. They were evaluated in the field for tree dimensions and habitat types to establish landscape-ecological impacts and spatial differentiation by districts and landuses. To aid the analysis, new quantitative indices were developed, namely landscape-ecological value (LEV), biomass-landscape congruence (BLC), and species spatial differentiation (SSD), respectively, for species presence, abundance, fidelity and clustering. Cultivated natives and five common species dominated heritage trees, accompanied by 11 rare and 9 single ones. Comparisons between the urban- and the heritage-tree populations, and between the LEV of individual species, indicated the uniqueness of heritage species composition and relative landscape-ecological contributions of species groups. Tree count, LEV and species diversity increased markedly with district age, culminating in the second oldest district and then declined somewhat in the oldest; species richness peaked in the mature district and dropped in the old and oldest. Older districts had a narrow range of similarly stressful habitats accommodating mainly inherited old trees; mature districts had more diversified habitats and a dual provenance of inheritance plus recent recruits; young districts had few of both types. Stressful roadside landuse was dominated by tree count, but it was poor in species diversity and richness, and had a rather monotonous native-foliage character. Park provided ample opportunities for a complex species cohort of disparate geographical origin, dimension, age, and amenity function, but its species diversity fell short of expectations. The public and semi-public grounds harboured mainly common species except religious grounds which had higher species diversity and some notably large and unique trees. BLC and SSD results echoed the differential operation of environmental and human influences on tree biomass, configuration and landscape impacts, resulting in notable variations between districts and landuses. The management implications of the results and prognosis for the future of urban heritage trees were explored with reference to Guangzhou and other cities. © 2003 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/landurbplanen_HK
dc.relation.ispartofLandscape and Urban Planningen_HK
dc.rightsLandscape and Urban Planning . Copyright © Elsevier BV.en_HK
dc.subjectChinaen_HK
dc.subjectGuangzhouen_HK
dc.subjectHeritage treesen_HK
dc.subjectLandscape assessmenten_HK
dc.subjectTree conservationen_HK
dc.subjectUrban foresten_HK
dc.subjectUrban treesen_HK
dc.titleSpatial differentiation and landscape-ecological assessment of heritage trees in urban Guangzhou (China)en_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0169-2046&volume=69&spage=51&epage=68&date=2004&atitle=Spatial+Differentiation+and+Landscape-Ecological+Assessment+of+Heritage+Trees+in+Urban+Guangzhou+(China)en_HK
dc.identifier.emailJim, CY:hragjcy@hkucc.hku.hken_HK
dc.identifier.authorityJim, CY=rp00549en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.landurbplan.2003.09.008en_HK
dc.identifier.scopuseid_2-s2.0-1842483940en_HK
dc.identifier.hkuros90506en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-1842483940&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume69en_HK
dc.identifier.issue1en_HK
dc.identifier.spage51en_HK
dc.identifier.epage68en_HK
dc.identifier.isiWOS:000221385100004-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridJim, CY=7006143750en_HK

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