• Proceedings of the Korean Society of Rural Planning Conference
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• 1998.03a
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• pp.21-24
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• 1998

The objective of this study is to enforce systematic evaluation on the present condition and ecosystem of coastal wetland to use frame of environmental indicators. For this, the indicators for evaluation of coastal wetland are established and are applied to the present condition. Then, the application possibility of this evaluation indicators and management method by group of coastal method are presented.

• Proceedings of the KSEEG Conference
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• 2005.04a
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• pp.163-163
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• 2005

• Journal of Cadastre & Land InformatiX
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• v.47 no.1
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• pp.27-35
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• 2017

Human activity such as agriculture, industrial development and urban sprawl has been the major threat to wetlands ecosystem, which have caused the greatest losses of coastal wetlands. The Garorim bay provides one of the most important wetland habitate and Ministry of Oceans and Fisheries designated Garorim bay to marine ecosystem protected area in July 2016. The purpose of this research is to analysis the spatial pattern of Garorim bay using Landsat 5 (TM), Landsat 7 (ETM+), Landsat 8 (OLI & TIRS). The surface temperature and NDVI of Garorim bay were processed with spatial analysis method and time series analysis were applied to 25 years Landsat satellite 19 images. The results of time series distribution map compared with the several wetland habitate on remotely sensed images. Landsat images showed the change area of wetland vegetation distribution from 1988 to 2014. The southern part habitate of Garorim bay have been changed with vegetation patterns on coastal wetland which were covered with tidal flat.

• Ocean and Polar Research
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• v.25 no.4
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• pp.545-555
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• 2003

It is widely known that compare to many other countries, the U.S.A. has a strong framework for efficient implementation of mitigation policy to protect wetlands. As indicated in many strong mitigation initiatives, mitigation policy primary requires avoidance rule for wetland damage and if a developer inevitability damages wetlands, the development should be minimize, and as a last resort, the policy impose legal duty that a developer should compensate wetland corresponding to the damaged wetlands. However, the legal system fur Korea's mitigation system does not provide any legal duty for the compensatory mitigation, although the possibility of creation of tidal flat is casually expressed in several Korean legal systems. Therefore, without any strong and enforceable legal system, Korean mitigation system cannot efficiently protect Korea's vast and productive wetlands. To introduce mitigation policy similar to the U.S.A. in Korea, we suggest that there (a) should be a strongly policy which regulate legal duty for the compensatory mitigation, (b) should be an improve management system for actively corresponding to special knowledge relating to environment, and lastly, (c) should be a system which consider a class action introduced in environmental regime for a long term protection of tidal wetlands for future generation.

• Journal of Wetlands Research
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• v.21 no.4
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• pp.365-373
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• 2019

In this study, we investigated the effect of wave height in coastal areas using discrete wavelet transform in Taehwa river basin in Ulsan. Through the decomposition result of tide data using daubechies level 7 wavelet and Curve Fitting Function, we confirmed that detail components of d₃ and d₄ were semidiurnal and diurnal components and approximation component(a₆) was the long period of lunar fortnight constituent. The decomposed tide data in six level was divided into tide component with periodicity and wave component with non-periodicity using autocorrelation function and fourier transform. Finally, we confirmed that the tide component is consisted 66% and wave component is consisted 34%. So, we quantitatively assessed the effect of wave on coastal areas. The result could be used for coastal flood risk management considering the effect of wave.

• Journal of Wetlands Research
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• v.18 no.3
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• pp.292-300
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• 2016

Diverse and comprehensive countermeasures were established to prevent water pollution in coastal areas such as constructed wetlands(CW).This study was conducted to assess the water quality improvement through CW constructed along the shoreline of Hwaseong coastal reservoir. The CW is located in Hwaseong-si, Gyeonggi-do and consisted of a forebay and a wetland. The CW was monitored twice during rainy days and 10 times during dry days. The monitoring results indicated that in and out flowrates were highly correlated with COD and TN loads. COD, TN and TP concentrations in the forebay was lower during dry days than rainy days. However, concentration and mass removal efficiencies of COD, TN and TP were greater during rainy days. In addition, the volume flowing into the CW was less compared to the outflow during rainy days indicating that the CW efficiently reduced the runoff volume. The overall pollutant removal efficiency of the CW were at least 50% for TSS, 20 to 35% for TP, and 26 to 94% for TN. The data gathered may be used to improve the pollutant removal efficiency of the system in the future.

• Journal of Wetlands Research
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• v.10 no.1
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• pp.49-57
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• 2008

Tidal flat, classified as wetland of coastal zone, is critical transitional zone connecting sea with land, and fulfills a variety of functions necessary for maintaining coastal ecosystem. Although it is critical to protect and strengthen its functions of coastal wetlands, tidal flat has been mainly viewed as areas for development in Korea. Therefore, this study provides with the effective mitigation measures so as to minimize adverse impacts of tidal flat reclamation projects on the proper environmental values. So far, coastal development has not considered as important the fact that development site consists of tidal flat in site selection. Therefore, large scale of tidal flats was abused. Problems were emerged only after tidal flat development was already planned. The original plan had to be revised. To rectify the problem, impacts of development on the environment need to be discussed based on the initial development planning. Particularly, sandy beaches, rocky shores and shallow areas, underwater forest including seagrass beds as well as the tidal flat in good condition should be excluded from development site.

• Journal of Wetlands Research
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• v.21 no.4
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• pp.267-280
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• 2019

Adaptive Management (AM) is one of the best available approaches for managing natural resources in the presence of uncertainty. In spite of the limitations, AM has been widely applied in nature resource management policies and plans internationally, while application of AM in nature resource management in Korea is limitedly used. Accordingly, this study reviews application of AM in nature resource management research in Korea with respect to its definitions, procedures, impediments and considerations. The present study also reviews recent ecological modelling studies which is an essential component of AM approach. Finally, management of artificial sea forest, coastal wetlands and fisheries are suggested as the recommended fields to adopt AM.

• Journal of Wetlands Research
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• v.12 no.2
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• pp.47-57
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• 2010

The purpose of this study is to investigate the seasonal variation of water quality parameters in Suncheon bay. We investigated at fifteen stations from October 2008to July 2009. picoplankton The salinity in the bay ranged from 8.8 to 31.9psu, DO ranged from 6.34 to 11.84 mg/L and the pH ranged from 7.80 to 8.34. The mean concentration of suspended solids ranged from 52.1 to 104.0 mg/L and COD concentration ranged from 2.27 to 5.33 mg/L. The total coliform group ranged from 6 to 37CFU. The concentrations of COD and total coliform group were relatively higher in the upper part of the Suncheon bay than lower one. The concentrations of nutrients such as nitrogen, phosphorus, silicate were also higher in the upper part of the bay, because the large amount of fresh water was inflowed into the bay from the Dong stream and Isa stream. Because the N/P ratio was ranged from 4.54 to 9.61 in this study, the limiting nutrients was nitrogen in the Suncheon bay comparing to the Redfield ratio.

• Korean Journal of Remote Sensing
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• v.39 no.6_3
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• pp.1747-1761
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• 2023

Wetlands, defined as lands periodically inundated or exposed during the year, are crucial for sustaining biodiversity and filtering environmental pollutants. The importance of mapping and monitoring their topographical changes is therefore paramount. This study focuses on the topographical variations at the Incheon River estuary wetland post-restoration, noting a lack of adequate prior measurements. Using a multi-temporal Sentinel-1 dataset from October 2014 to March 2023, we mapped long-term variations in water bodies and detected topographical change anomalies using a pixel-frequency approach. Our analysis, based on 196 Sentinel-1 acquisitions from an ascending orbit, revealed significant topography changes. Since 2020, employing the pixel-frequency technique, we observed area increases of +0.0195, 0.0016, 0.0075, and 0.0163 km² in water level sections at depths of 2-3 m, 1-2 m, 0-1 m, and less than 0 m, respectively. These findings underscore the effectiveness of the wetland restoration efforts in the area.