Abstract
The farm pond system for irrigation is the most prominent feature in the Taoyuan area, Taiwan, giving the region a unique landscape and hydrological character. Although this area had more than 3,290 ponds in the 1970s, fewer than 1,800 now remain. This study analyzes changes in irrigation farm ponds and the canal network landscape in the Taoyuan area. The spatial and temporal changes to ponds and the canal network on the Taoyuan plain were examined graphically for each spatial unit (2,765 m × 2,525 m) using aerial photographs for 1979 and 2005. Landscape metrics were calculated to analyze landscape change associated with increased urbanization. Landscape indices of connectivity and circuitry were utilized to describe changes in the configuration of ponds and canal networks. The total length of canals and total number of ponds in the study area decreased significantly during 1979–2005. The average values of connectivity indices (γ- and α-index) also decreased during 1979–2005, reflecting degradation of canal networks due to urban sprawl. A multivariate technique was applied to portion the study area into three zones according to changes to land cover, ponds, and canal networks. The effects of urban sprawl on the spatial pattern of ponds and canal networks are discussed.
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The financial support for this research was provided by the National Science Council of Taiwan (Grant no. NSC96-2415-H-305-012-MY3).
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Huang, SL., Lee, YC., Budd, W.W. et al. Analysis of Changes in Farm Pond Network Connectivity in the Peri-Urban Landscape of the Taoyuan Area, Taiwan. Environmental Management 49, 915–928 (2012). https://doi.org/10.1007/s00267-012-9824-7
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DOI: https://doi.org/10.1007/s00267-012-9824-7