Selecting Appropriate Spatial Scale for Mapping Plastic-Mulched Farmland with Satellite Remote Sensing Imagery
| العنوان: | Selecting Appropriate Spatial Scale for Mapping Plastic-Mulched Farmland with Satellite Remote Sensing Imagery |
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| المؤلفون: | Jia Liu, Limin Wang, Hasituya, Zhongxin Chen |
| المصدر: | Remote Sensing, Vol 9, Iss 3, p 265 (2017) Remote Sensing; Volume 9; Issue 3; Pages: 265 |
| بيانات النشر: | MDPI AG, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 010504 meteorology & atmospheric sciences, Relation (database), Computer science, supervised classifier, 0211 other engineering and technologies, 02 engineering and technology, plastic-mulched farmland (PMF), local variance function, 01 natural sciences, Support vector machine, Satellite remote sensing, Spatial ecology, appropriate spatial scale, General Earth and Planetary Sciences, mapping, GF-1 satellite imagery, Satellite imagery, lcsh:Q, lcsh:Science, Image resolution, 021101 geological & geomatics engineering, 0105 earth and related environmental sciences, Remote sensing |
| الوصف: | In recent years, the area of plastic-mulched farmland (PMF) has undergone rapid growth and raised remarkable environmental problems. Therefore, mapping the PMF plays a crucial role in agricultural production, environmental protection and resource management. However, appropriate data selection criteria are currently lacking. Thus, this study was carried out in two main plastic-mulching practice regions, Jizhou and Guyuan, to look for an appropriate spatial scale for mapping PMF with remote sensing. The average local variance (ALV) function was used to obtain the appropriate spatial scale for mapping PMF based on the GaoFen-1 (GF-1) satellite imagery. Afterwards, in order to validate the effectiveness of the selected method and to interpret the relationship between the appropriate spatial scale derived from the ALV and the spatial scale with the highest classification accuracy, we classified the imagery with varying spatial resolution by the Support Vector Machine (SVM) algorithm using the spectral features, textural features and the combined spectral and textural features respectively. The results indicated that the appropriate spatial scales from the ALV lie between 8 m and 20 m for mapping the PMF both in Jizhou and Guyuan. However, there is a proportional relation: the spatial scale with the highest classification accuracy is at the 1/2 location of the appropriate spatial scale generated from the ALV in Jizhou and at the 2/3 location of the appropriate spatial scale generated from the ALV in Guyuan. Therefore, the ALV method for quantitatively selecting the appropriate spatial scale for mapping PMF with remote sensing imagery has theoretical and practical significance. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2072-4292 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::955cc449b923e52510893c06bee66265 http://www.mdpi.com/2072-4292/9/3/265 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....955cc449b923e52510893c06bee66265 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20724292 |
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