@article{27fadd93-cbbe-4c7d-b043-42fef01b8540,
author = {Tomasz  Pirowski, Katarzyna Berka},
title = {Analysis of land use and land cover maps suitability for estimating population density in urban areas - exclusion of the equifinality phenomenon on population maps developed from CLC, UA and OBIA data},
journal = {Geoinformatica Polonica},
volume = {2019},
number = {Vol. 18 (2019)},
year = {2019},
issn = {1642-2511},
pages = {45-55},keywords = {population data; dasymetric modeling; LULC; photointerpretation; equifinality phenomenon},
abstract = {The series of articles contains a comparison of the possibilities of using for dasymetric estimation of population distribution of spatial information about buildings. The buildings come from three sources characterized by different spatial, thematic and temporal accuracy. These are data from Corine Land Cover (CLC) and Urban Atlas (UA) projects and the result of object classification (OBIA) of RapidEye data. The experiment was carried out in the area of Krakow. Statistical data from 141 city urban units (u. u.) were used.In the first two parts of the cycle, population conversions based on CLC, UA, OBIA and OBIA in combination with UA were presented (Pirowski and Timek, 2018; Pirowski et al., 2018). In total, 12 maps of Kraków’s population were obtained. RMSE and MAPE mean errors were calculated as well as population density for each category of residential development. The results were discussed.In the third part of the cycle, the obtained population maps were analyzed in detail, referring to the Bronowice district (the north-western area of the city) prepared especially by the population. The reference map has been made in high resolution. The methodology of its elaboration has been described in detail. Complementary use of orthophotomap from aerial photographs together with public databases (Geoportal, OpenStreetMap, GoogleStreetView) was presented. The proprietary MMAPE parameter has been proposed. The parameter analyzes the similarity of the reference map of Bronowice with the dasymetric maps. It allows you to statistically describe their credibility and exclude the phenomenon of equivalence.As a result of the conducted research, an erroneous population distribution was detected for the variant OBIA, in which the weights were determined by minimizing the MAPE error. From the remaining experiments, the three best results were obtained by maps using information about urban development from Urban Atlas (MMAPE100m = 19.3–22.1%). Complementary use of OBIA and UA did not bring any synergy effect – the results were worse than for UA (21.6–24.3%). High errors were noted for OBIA – it is only worth to notice a better result from the binary OBIA method (MMAPE100m = 22.8%) than the result from the binary CLC method (MMAPE100m = 24.3%).At this stage of the research, UA data is recommended for the conversion of population. The object classification methods are not a reliable source of data on building types, and such information is necessary for the use of surface-by-weight methods. The use of OBIA is possible only in the binary method and gives results similar to the use of data from CLC.In the fourth part, it is planned to verify the population maps using the Central Statistical Offic (CSO) kilometer network for the whole of Poland, which was made available in 2017. On the basis of multivariate tests and two-stage verification, the authors plan to provide the advantages and disadvantages of the described methods of population conversion and to develop a ranking of the obtained Krakow population maps.},
doi = {10.4467/21995923GP.19.003.10887},
url = {https://ejournals.eu/en/journal/geoinformatica-polonica/article/analysis-of-land-use-and-land-cover-maps-suitability-for-estimating-population-density-in-urban-areas-exclusion-of-the-equifinality-phenomenon-on-population-maps-developed-from-clc-ua-and-obia-data}
}