Fig. 1. Change in land surface cover in the Naeseong stream during 1971 - 2013 (modified from Kim and Lee 2014).
Fig. 2. Watershed and study reach of the Naeseong stream.
Fig. 3. Annual mean temperature and precipitation at Yeongju during 1973 - 2016 (Source: http://www.weather.go.kr).
Fig. 4. Daily discharge as computed using water level data at Wolpo station. Dashed line means a 2-year moving average.
Fig. 5. Change in ENCR (red) and RECV (blue) according to year along the sub-reaches. Sub-reaches of no value indicate exclusion due to human disturbance.
Fig. 6. A series of orthorectified aerial photos with layers of classified land surface cover of vegetation (VGH, VGT), cultivated land (HUC) and plantation or pasture (HUP) along sub-reach R07 - R08 during 1980 - 2016.
Fig. 7. Temporal changes in the vegetated area for the whole study reach.
Fig. 8. A uni-variable regression model plot between AC and TAJ for upstream sub-reaches, together with R02.
Fig. 9. Mean temperature during April to June in Youngju. The red line indicates a 3-year moving average.
Fig. 10. Relationship between annual rate of increase in VGH/VGT/HUC/HUP area and width of 1965.
Table 1. Drainage area and channel characteristics of the 13 sub-reaches
Table 2. Topographic maps, aerial photos, and satellite images collected from various sources. Abbreviated sources are as follows: National Geographic Information Institute of Korea (NGII), Korea Forestry Promotion Institute (KOFPI), Samah Aerial Survey Co. (SAS)
Table 3. Types of land surface cover. HUP represents both Plantation1, which includes Italian Poplar tree cultivation before the year 2000, and Pasture2, which means areas used for repetitive herb raising/cutting after 2000, as identified from field investigations
Table 4. Definition of dependent variables
Table 5. Independent variables used for sub-reach analysis. Units of discharge, width, rainfall, and temperature are m3/s, m, mm, and ℃, respectively
Table 6. Regression models for sub-reach-based analysis. p-values of all the models were below 0.01. The prefix L means that the variable is log-transformed
Table 7. Relative importance (RI) of regressors in the all sub-reach models (Eq. 2)
Table 8. Multiple regression models for whole-reach based analysis. p-values of all the models were below 0.01. The t in variables means a whole reach analysis was applied
참고문헌
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피인용 문헌
- 내성천의 수문, 하도 형태, 경관 및 식생 특성에 관한 장기모니터링 자료 (II) vol.6, pp.1, 2018, https://doi.org/10.17820/eri.2019.6.1.034