Primary discussion on the relationship between spatial distributions of fuzzy slope positions and soil types

Cheng-Zhi Qin; A-Xing Zhu; Lin Yang; Bao-Lin Li; Tao Pei

doi:10.1117/12.813126

10 November 2008 Primary discussion on the relationship between spatial distributions of fuzzy slope positions and soil types

Cheng-Zhi Qin, A-Xing Zhu, Lin Yang, Bao-Lin Li, Tao Pei

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Proceedings Volume 7146, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Advanced Spatial Data Models and Analyses; 71460Z (2008) https://doi.org/10.1117/12.813126
Event: Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments, 2008, Guangzhou, China

Abstract

As one of key factors which control the spatial soil variation in soil-landscape model, terrain information includes not only topographic attributes (such as slope gradient, curvature, etc.) but also information of slope positions. But the spatial gradation of slope positions is still not quantitatively considered in current predictive soil mapping and other related application areas. The issue of this paper is to make a primary discussion on the potential role of spatial gradation of slope positions in soil-landscape model. Taking a study area in Northeast China and a detailed taxonomy of slope position, this paper firstly utilized a fuzzy inference approach based on similarity to the typical locations to quantify the spatial gradation between slope positions. Secondly, we took use of the soil-subgroup map in study area to analyze whether there is an evident relationship between soil distribution and spatial gradation of slope positions or not, by means of the statistics on the percentage of slope positions on where each soil subgroup in study area is distributed. The results show that the distributions between slope positions and soil subgroups are clearly correlative in the areas where fuzziness as one certain slope position is little. And the soil distribution shows obvious intergradation and uncertainty in areas where the slope position is identified with much ambiguity. The evident relationship between soil distribution and spatial gradation of slope positions indicates that the quantitative information of spatial gradation of slope positions should be included into both soil-landscape model and its applications (e.g., digital soil mapping, etc.), for a better depiction on the co-variation between slope positions and soil type.

Citation Download Citation

Cheng-Zhi Qin, A-Xing Zhu, Lin Yang, Bao-Lin Li, and Tao Pei "Primary discussion on the relationship between spatial distributions of fuzzy slope positions and soil types", Proc. SPIE 7146, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Advanced Spatial Data Models and Analyses, 71460Z (10 November 2008); https://doi.org/10.1117/12.813126

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KEYWORDS

Fuzzy logic

Soil science

Associative arrays

Taxonomy

Fourier transforms

Data modeling

Pulmonary function tests

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