干旱区生态环境知识资源中心(Arid): Assessing the adequacy of an aggregated vegetation classification: A test in semi-arid Australia

Arid

DOI	10.1111/aec.13460
	Assessing the adequacy of an aggregated vegetation classification: A test in semi-arid Australia
	Mcintosh, Rachel; Verdon, Simon J.; Radford, James Q.; Clarke, Michael F.; Bennett, Andrew F.
通讯作者	Mcintosh, R
来源期刊	AUSTRAL ECOLOGY
ISSN	1442-9985
EISSN	1442-9993
出版年	2024
卷号	49 期号:2
英文摘要	Vegetation classifications are a valuable tool for guiding management decisions. Vegetation can be classified at different levels of resolution for different purposes. Aggregating finer-resolution classification units to simplify planning and decision-making is becoming more common in land management. However, little is known about which resolution or scale of aggregation is appropriate for specific land management practices and the factors to consider when aggregating vegetation classification units. There is a risk that aggregated classification units may overlook vital floristic and structural differences between communities and not accurately represent the patterns of variation in vegetation. This may lead to unanticipated adverse outcomes from management actions. We compared three classification systems to test how well each represented patterns of variation in the vegetation of a semi-arid region in Victoria, Australia: (a) a finer-level classification system; (b) a coarser-resolution system that aggregated finer compositional resolution units for fire management purposes; and (c) a coarser-resolution classification based on Climate Zones. We conducted floristic and vegetation structure surveys at 249 sites stratified across a climate gradient. Sites were assigned to vegetation classifications based on mapped data layers and checked by ground truthing prior to inclusion. The classification based on a finer compositional resolution best represented variation in both the floristic and structural patterns of the vegetation across this region. This was not unexpected, because accuracy is traded-off against simplicity when aggregating vegetation classification units. However, the aggregated classification also performed poorly in representing patterns of vegetation when compared with a simple scheme based on Climate Zones. Assessing the adequacy of aggregated vegetation classification units is important, yet often overlooked. To be effective, aggregated vegetation classes must reflect the underlying factors that drive patterns of variation in the vegetation to ensure they support intended management outcomes. Aggregating finer-resolution classification units to simplify planning and decision-making is becoming more common in land management. We tested how a finer-level classification system and a coarser-resolution, aggregated classification system represented the patterns of variation in the vegetation in a semi-arid region in Victoria, Australia, and found that the aggregated classification performed worse than a simple scheme based on Climate Zones. To be effective, while also satisfying pragmatic operational requirements for simplicity, it is imperative that aggregated vegetation classifications reflect the underlying factors that drive patterns of vegetation floristics and structure.image
英文关键词	climatic gradient floristic composition Heathland Vegetation Mallee Vegetation vegetation structure
类型	Article
语种	英语
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:001117777400001
WOS关键词	FLORISTIC COMPOSITION ; NATIONAL-PARK ; PLANT-COMMUNITIES ; SPECIES RICHNESS ; GRADIENT ; CLIMATE ; LANDSCAPE ; DIVERSITY ; ECOVEG ; REGION
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402998
推荐引用方式 GB/T 7714	Mcintosh, Rachel,Verdon, Simon J.,Radford, James Q.,et al. Assessing the adequacy of an aggregated vegetation classification: A test in semi-arid Australia[J],2024,49(2).
APA	Mcintosh, Rachel,Verdon, Simon J.,Radford, James Q.,Clarke, Michael F.,&Bennett, Andrew F..(2024).Assessing the adequacy of an aggregated vegetation classification: A test in semi-arid Australia.AUSTRAL ECOLOGY,49(2).
MLA	Mcintosh, Rachel,et al."Assessing the adequacy of an aggregated vegetation classification: A test in semi-arid Australia".AUSTRAL ECOLOGY 49.2(2024).