Preprint Article Version 1 This version is not peer-reviewed

A Multi-Decadal Change Analysis for Irrigation Ponds in Taoyuan, Taiwan Using Multi-source Data

Version 1 : Received: 16 June 2018 / Approved: 18 June 2018 / Online: 18 June 2018 (16:40:31 CEST)

How to cite: Chen, Y.; Lin, W.; Hsiao, L.; Cheng, K. A Multi-Decadal Change Analysis for Irrigation Ponds in Taoyuan, Taiwan Using Multi-source Data. Preprints 2018, 2018060282 (doi: 10.20944/preprints201806.0282.v1). Chen, Y.; Lin, W.; Hsiao, L.; Cheng, K. A Multi-Decadal Change Analysis for Irrigation Ponds in Taoyuan, Taiwan Using Multi-source Data. Preprints 2018, 2018060282 (doi: 10.20944/preprints201806.0282.v1).

Abstract

A multi-decadal change analysis of the irrigation ponds in Taoyuan, Taiwan was conducted by using multi-source data including digitized ancient maps, declassified single-band CORONA satellite images, and multispectral SPOT images. Supervised LULC classifications were conducted using four textural features derived from the single-band CORONA images and spectral features derived from SPOT images. Post-classification analysis revealed that the number of irrigation ponds in the study area decreased during the post-World War II farmland consolidation period (1945 – 1965) and the subsequent industrialization period (1970 – 2000). However, efforts on restoration of irrigation ponds in recent years have resulted in gradual increases in the number (9%) and total area (12%) of irrigation ponds in the study area.

Subject Areas

land-use/land-cover; multi-decadal change analysis; irrigation ponds; textural features; supervised classification; multi-source data

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