Effect of Forest Growth and Thinning on the Long-term Water Balance in a Coniferous Forest

Choi, Hyung-Tae

doi:10.5532/kjafm.2010.13.4.157

Cited by 4 publications

(4 citation statements)

References 7 publications

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“…Thus, the GC catchment has a larger evapotranspiration per unit area than GD. This is the same as the result obtained by Choi [32], who previously studied the same GC and GD catchments and found different evapotranspiration values of each catchment. Richard [22] and Wittenberg [7] noted that evapotranspiration effects the recession constant and they found that the more evapotranspiration occurs, the smaller the calculated recession constant.…”

Section: Differences Between Gc and Gd Catchmentssupporting

confidence: 78%

Applicability Assessment of Estimation Methods for Baseflow Recession Constants in Small Forest Catchments

Yang

Choi

Lim

2018

Water

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Abstract:In South Korea, since small forest catchments are located upstream of most river basins, the baseflow from these catchments is important for a clean water supply to downstream areas. Baseflow recession analysis is widely recognized as a valuable tool for estimating the baseflow component of the stream hydrograph. However, few studies have applied this tool to small forest catchments. So, this study was conducted to assess the applicability of the recession analysis methods proposed in previous studies. The data used were long-term rainfall-runoff data from 1982 to 2011 in the Gwangneung coniferous (GC) and deciduous (GD) forest catchment in Gyeonggi-do, South Korea. For the applicability assessment, six recession constant estimation methods, which were used by previous studies, were selected. The recession constants of the GC and GD catchments were calculated, and applicability assessments were conducted by comparing the recession predictions and baseflow separations. As a result, the recession constants for GC and GD were 0.8480 and 0.9235, respectively. This clear difference may be due to the different forest cover in each area. The correlation regression line, AR(1) model, and the Vogel and Kroll method showed lower error rates and appropriate baseflow indexes compared with other methods.

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Section: Differences Between Gc and Gd Catchmentssupporting

confidence: 78%

Applicability Assessment of Estimation Methods for Baseflow Recession Constants in Small Forest Catchments

Yang

Choi

Lim

2018

Water

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“…In this study, coniferous trees were planted after the clear cutting of the deciduous catchment, which resulted in a decrease in water yield. In other words, although there is a deviation in terms of the forest characteristics such as tree density, leaf area index, forest age, etc., this generally means that the water yield of coniferous forests is less than that of deciduous forest, and related research has been steadily conducted to date [7,13,29].…”

Section: Runoff Shifts In Gcp and Gnd Forest Catchmentsmentioning

confidence: 99%

Effects of Forest Thinning on the Long-Term Runoff Changes of Coniferous Forest Plantation

Yang

Choi

Lim

2019

Water

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Forests and water are closely related to each other. Thus, forest management is crucial for the sustainable clean water supply. Forest thinning is one of the fundamental forest management practices, as it can change runoff by controlling the density of trees. In this study, the effect of forest thinning on long-term runoff changes was evaluated, based on the long-term rainfall-runoff data of a coniferous plantation forest catchment in Korea. From the double mass curve and Pettitt’s test, a statistically significant increase in runoff rates was identified. A simple linear regression model of the double mass curve can successfully quantify the net effect of forest thinning on the runoff increase. Furthermore, it was also confirmed that forest thinning does not significantly increase the risk of flooding. About ten years after forest thinning, crown closure rates of the coniferous plantation forest reached a level similar to the pre-thinning period, and runoff rates returned to the pre-thinning level, due to forest growth. As a result of this study, a proposed direction for Korea’s forest policy for water resource management is presented for the future.

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“…Choi (2011) [92] provided a very good example of the significant effects of forest management on the long-term water balance of forested catchments (Table 4). Over a period of 28 years, the runoff coefficient of a catchment mostly covered by a coniferous plantation was lower than that of a similar catchment covered by a deciduous forest.…”

Section: Inclusion Of Key Forest Hydrological Services In the Sustainmentioning

confidence: 99%

The Inclusion of Forest Hydrological Services in the Sustainable Development Strategy of South Korea

Payeur-Poirier

Nguyen

2017

Sustainability

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Abstract:In the last decade, the South Korean government has implemented an unprecedented series of plans and policy actions to promote sustainable development, including the National Strategy for Green Growth. Some of these initiatives were direct responses to the evolving challenges in the water sector, and put forest hydrological services into perspective. To a certain extent, water was managed within a wider environmental context through the combination of forest and water management. However, the efforts to enhance forest hydrological services did not correspond to the immense potential of forests for the achievement of sustainable water management. We present a comprehensive and current view of the major challenges and opportunities related to forest hydrological services in South Korea. We identify key forest hydrological services in view of the major biophysical, environmental, and economic challenges in the water sector. We propose guidelines for the enhancement of forest hydrological services and for a better inclusion of these services in South Korea's sustainable development strategy. An increased contribution of forests to the provision of high-quality water in sufficient, regulated amounts, and to the preservation of a safe environment in regards to natural hazards is imperative for the long-term development of South Korea.

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Effect of Forest Growth and Thinning on the Long-term Water Balance in a Coniferous Forest

Cited by 4 publications

References 7 publications

Applicability Assessment of Estimation Methods for Baseflow Recession Constants in Small Forest Catchments

Applicability Assessment of Estimation Methods for Baseflow Recession Constants in Small Forest Catchments

Effects of Forest Thinning on the Long-Term Runoff Changes of Coniferous Forest Plantation

The Inclusion of Forest Hydrological Services in the Sustainable Development Strategy of South Korea

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