Spatial variability
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Spatial variability occurs when a quantity that is measured at different spatial locations exhibits values that differ across the locations. Spatial variability can be assessed using spatial descriptive statistics such as the range.
Let us suppose that the Rev' z(x) is perfectly known at any point x within the field under study. Then the uncertainty about z(x) is reduced to zero, whereas its spatial variability still exists. Uncertainty is closely related to the amount of spatial variability, but it is also strongly dependent upon sampling.Lua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found.
Geostatistical analyses have been strictly performed to study the spatial variability of pesticide sorptionLua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found.Lua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found.Lua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found. and degradationLua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found. in the field. Webster and OliverLua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found. provided a description of geostatistical techniques. Describing uncertainty using geostatistics is not an activity exempt from uncertainty itself as variogram uncertainty may be largeLua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found. and spatial interpolation may be undertaken using different techniques.Lua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found.
References
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Literature
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This "further reading" section may need cleanup. (February 2023) |
- Isaaks, E.H., Srivastava R.M.: Applied Geostatistics. 1989
- Fortin, Marie-Josee, Dale, Mark.: Spatial Analysis A Guide for Ecologists. 2005. Cambridge University Press, 365 pp.
- Page Module:Citation/CS1/styles.css has no content.Kristensen, Terje; Ohlson, Mikael; Bolstad, Paul; Nagy, Zoltan (2015-07-24). "Spatial variability of organic layer thickness and carbon stocks in mature boreal forest stands—implications and suggestions for sampling designs". Environmental Monitoring and Assessment. 187 (8). Springer Science and Business Media LLC: 521. Bibcode:2015EMnAs.187..521K. doi:10.1007/s10661-015-4741-x. ISSN 0167-6369. PMID 26205281. S2CID 6396005.
- Page Module:Citation/CS1/styles.css has no content.Delhomme, J. P. (1979). "Spatial variability and uncertainty in groundwater flow parameters: A geostatistical approach". Water Resources Research. 15 (2). American Geophysical Union (AGU): 269–280. Bibcode:1979WRR....15..269D. doi:10.1029/wr015i002p00269. ISSN 0043-1397.* Page Module:Citation/CS1/styles.css has no content.Cambardella, C. A.; Moorman, T. B.; Novak, J. M.; Parkin, T. B.; Karlen, D. L.; Turco, R. F.; Konopka, A. E. (1994). "Field-Scale Variability of Soil Properties in Central Iowa Soils". Soil Science Society of America Journal. 58 (5). Wiley: 1501–1511. Bibcode:1994SSASJ..58.1501C. doi:10.2136/sssaj1994.03615995005800050033x. ISSN 0361-5995.* Page Module:Citation/CS1/styles.css has no content.Novak, J. M.; Moorman, T. B.; Cambardella, C. A. (1997). "Atrazine Sorption at the Field Scale in Relation to Soils and Landscape Position". Journal of Environmental Quality. 26 (5). Wiley: 1271–1277. Bibcode:1997JEnvQ..26.1271N. doi:10.2134/jeq1997.00472425002600050011x. ISSN 0047-2425.* Page Module:Citation/CS1/styles.css has no content.Jacques, D; Mouvet, C; Mohanty, B; Vereecken, H; Feyen, J (1999). "Spatial variability of atrazine sorption parameters and other soil properties in a podzoluvisol" (PDF). J Contam Hydrol. 36 (1): 31–52. Bibcode:1999JCHyd..36...31J. doi:10.1016/S0169-7722(98)00141-7.
- Page Module:Citation/CS1/styles.css has no content.Price, OR; Walker, A; Wood, M; Oliver, MA (2001). "Using geostatistics to evaluate spatial variation in pesticideysoil interactions". In Walker A. (ed.). Pesticide behaviour in soils and water. BCPC Symposium Proceedings No. 78. Farnham, UK. pp. 233–238.
{{cite book}}: CS1 maint: location missing publisher (link) - Page Module:Citation/CS1/styles.css has no content.Webster, R (2007). Geostatistics for environmental scientists. Chichester Hoboken, NJ: Wiley. ISBN 978-0-470-02858-2. OCLC 212122100.
- Page Module:Citation/CS1/styles.css has no content.Jansen, Michiel J.W. (1998). "Prediction error through modelling concepts and uncertainty from basic data". Nutrient Cycling in Agroecosystems. 50 (1/3). Springer Science and Business Media LLC: 247–253. Bibcode:1998NCyAg..50..247J. doi:10.1023/a:1009748529970. ISSN 1385-1314. S2CID 38278687.
- Page Module:Citation/CS1/styles.css has no content.Dubus, Igor G; Brown, Colin D; Beulke, Sabine (2003). "Sources of uncertainty in pesticide fate modelling". Science of the Total Environment. 317 (1–3). Elsevier BV: 53–72. Bibcode:2003ScTEn.317...53D. CiteSeerX 10.1.1.472.35. doi:10.1016/s0048-9697(03)00362-0. ISSN 0048-9697. PMID 14630412.
External links
- Page Module:Citation/CS1/styles.css has no content."EPA Regional Vulnerability Assessment (ReVA) Environmental Decision Toolkit". amethyst.epa.gov. 2006-10-01. Archived from the original on 2006-10-01. Retrieved 2021-04-12.
- http://gis.esri.com/library/userconf/proc05/papers/pap1184.pdf
- https://web.archive.org/web/20100110102738/http://willingtoncropservices.co.uk/case_study_GPS-soil-sampling-nutrient-mapping.htm Willington Crop Services shows spatial variability in action with Case Study on GPS soil sampling, GPS nutrient mapping and nutrient management.
