2. Materials and Methods
2.1. Study Area
|19 July 1991||TM||Bands 1–5 and 7: 30 m|
|Band 6: 120 m|
|11 September 2005||ETM+||Bands 1–5 and 7: 30 m|
|Band 6: 120 m|
|Band 8: 15 m|
2.2. Extraction of Lake Areal Extent and Land Use Classification
|1||Water body||Surface water bodies: rivers, lakes, and ponds|
|2||Shallow water||Edge of water bodies: wetlands|
|3||Agricultural||Dry land and paddy fields|
|4||Vegetated||Nature forests and grasslands|
|5||Developed||Artificial areas: residential, commercial, and industrial areas|
|6||Bare||Bare surfaces: bare lands and construction sites|
2.3. Expression of Lake Area and Land Use Changes
2.4. Relationships between Lake Area and Lakefront Land Use Change
2.4.1. Measuring Loss Rate with Proportion of Lakefront Land Use Change
- If 0 < ρij ≤ 1 there is a positive correlation between R and Pij, which shows that an increasing Pij is most likely to lead to the lake being filled in.
- If ρij = 0, tij cannot be correlated with the loss rate, this shows that the loss rate has nothing to do with the lakefront land use change.
- If −1 ≤ ρij < 0, there is a negative correlation between R and Pij, which indicates that the higher the proportion of tij, the lower the loss rate.
2.4.2. Measuring Spatial Autocorrelation of Lakefront Land Use
2.4.3. Measuring Center Displacement with Lakefront Land Use Change
- If cos θij > 0, such as θ45, uij has a correlation with D, there is a pushing effect of land use change tij on the lake area. In other words, there are some reductions in lake area due to land use change tij.
- If cos θij ≤ 0, such as θ52 and θ44, uij has no correlation with D, there is no reduction in lake area due to land use change tij.
3. Results and Discussions
3.1. Loss Rate of Lake Area with Proportion of Lakefront Land Use Change
3.2. Loss Rate of Lake Area with Spatial Autocorrelation of Lakefront Land Use
3.3. Center Displacement of Lake Area with Lakefront Land Use Change
Conflicts of Interest
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