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Rules to write mathematics to clarify metrics such as the land use dynamic degrees
Pontius, Robert Gilmore, Jr.1; Huang, Jinliang2; Jiang, Wenle1; Khallaghi, Sam1; Lin, Youtao1; Liu, Jiyuan3; Quan, Bin4; Ye, Su1
2017-12-01
Source PublicationLANDSCAPE ECOLOGY
ISSN0921-2973
Volume32Issue:12Pages:2249-2260
Corresponding AuthorPontius, Robert Gilmore, Jr.(rpontius@clarku.edu)
AbstractScientists frequently describe temporal change among land categories by reporting the single land use dynamic degree and the comprehensive land use dynamic degree (CLUDD). The original intention of CLUDD was to compute the annual change percentage, which is the size of annual change expressed as a percentage of the size of the spatial extent. However, the literature's mathematical descriptions of CLUDD have been unclear, thus readers have imagined various ways to compute CLUDD. Our manuscript clarifies the confusion and offers rules for mathematical notation so that authors can avoid future confusion. We examine the literature to see how authors have computed and interpreted the land use dynamic degrees. We illustrate deficiencies of one version of CLUDD. Then we propose equations for the components of annual change percentage. The literature shows three common misunderstandings. First, some authors add percentages of categories without accounting for the sizes of the categories. Second, other authors compute either double or half of the annual change percentage. Third, many authors interpret CLUDD as if CLUDD were the annual change percentage when they use a version of CLUDD that is not the annual change percentage. We recommend that the professional community use annual change percentage, its three components and Intensity Analysis to express temporal change among categories. Vague mathematical notation has created confusion concerning the land use dynamic degrees; therefore, we give rules for how to write mathematics clearly in a manner that applies to many professions.
KeywordAnnual change percentage China CLUDD Intensity Analysis Land change Mathematical notation
DOI10.1007/s10980-017-0584-x
WOS KeywordSPATIAL-TEMPORAL PATTERN ; INTENSITY ANALYSIS ; CATEGORICAL MAPS ; SOUTHEAST CHINA ; DRIVING FORCES ; RIVER-BASIN ; CLASSIFICATION ; QUANTITY ; USE/COVER ; LOCATION
Indexed BySCI
Language英语
Funding ProjectUnited States' National Science Foundation (NSF) via the Long Term Ecological Research network[OCE-1637630] ; Key Project of Hunan Provincial Department of Education of China ; Recruitment Program of High-end Foreign Experts of the State Administration of Foreign Experts Affairs of China[17A067] ; Recruitment Program of High-end Foreign Experts of the State Administration of Foreign Experts Affairs of China[GWD201543000243] ; Edna Bailey Sussman Foundation[24546]
Funding OrganizationUnited States' National Science Foundation (NSF) via the Long Term Ecological Research network ; Key Project of Hunan Provincial Department of Education of China ; Recruitment Program of High-end Foreign Experts of the State Administration of Foreign Experts Affairs of China ; Edna Bailey Sussman Foundation
WOS Research AreaEnvironmental Sciences & Ecology ; Physical Geography ; Geology
WOS SubjectEcology ; Geography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000416857800003
PublisherSPRINGER
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68571
Collection中国科学院地理科学与资源研究所
Corresponding AuthorPontius, Robert Gilmore, Jr.
Affiliation1.Clark Univ, Sch Geog, 950 Main St, Worcester, MA 01610 USA
2.Xiamen Univ, Coastal & Ocean Management Inst, Xiamen, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
4.Hengyang Normal Univ, Coll City & Tourism, Hengyang 421002, Peoples R China
Recommended Citation
GB/T 7714
Pontius, Robert Gilmore, Jr.,Huang, Jinliang,Jiang, Wenle,et al. Rules to write mathematics to clarify metrics such as the land use dynamic degrees[J]. LANDSCAPE ECOLOGY,2017,32(12):2249-2260.
APA Pontius, Robert Gilmore, Jr..,Huang, Jinliang.,Jiang, Wenle.,Khallaghi, Sam.,Lin, Youtao.,...&Ye, Su.(2017).Rules to write mathematics to clarify metrics such as the land use dynamic degrees.LANDSCAPE ECOLOGY,32(12),2249-2260.
MLA Pontius, Robert Gilmore, Jr.,et al."Rules to write mathematics to clarify metrics such as the land use dynamic degrees".LANDSCAPE ECOLOGY 32.12(2017):2249-2260.
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