Monitoring wetland vegetation pattern response to water-level change resulting from the Three Gorges Project in the two largest freshwater lakes of China

Hu, Yanxia; Huang, Jinliang; Du, Yingxun; Han, Pengpeng; Wang, Jiuling; Wei, Huang

doi:10.1016/j.ecoleng.2014.10.002

Cited by 75 publications

(39 citation statements)

References 26 publications

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“…Hu et al (2014) [60] verified the accuracy of the wetland landscape pattern data and obtained an overall accuracy of 83.99% and a Kappa coefficient of 0.79.…”

Section: Auxiliary Datamentioning

confidence: 61%

“…Wetland landscape pattern data were derived from the research of Hu et al (2014) [60]; they developed a rule-based model to extract the spatial distribution of wetland vegetation from MODIS time-series data during 2000 to 2012 in the Dongting Lake. Hu et al (2014) [60] verified the accuracy of the wetland landscape pattern data and obtained an overall accuracy of 83.99% and a Kappa coefficient of 0.79.…”

Section: Auxiliary Datamentioning

confidence: 99%

“…Feng et al (2012) [35] used this index combining with a gradient approach to extract the water body from MODIS data during 2000 to 2010 in the Poyang Lake with the thought of regarding the maximum gradient of FAI as the water/marshland boundary. On the basis of Feng's research, Hu et al (2014) [60] utilized FAI with a gradient approach of Robert [69] to derive inundation areas from MODIS images between 2000 and 2012 in the Dongting Lake and Poyang Lake. In the current study, the method used for water area delineation was guided by that of Hu et al (2014) [60].…”

Section: Rmentioning

confidence: 99%

“…On the basis of Feng's research, Hu et al (2014) [60] utilized FAI with a gradient approach of Robert [69] to derive inundation areas from MODIS images between 2000 and 2012 in the Dongting Lake and Poyang Lake. In the current study, the method used for water area delineation was guided by that of Hu et al (2014) [60]. Figure 2 presents a schematic view of this method for water extraction.…”

Section: Rmentioning

confidence: 99%

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Monitoring Spatial and Temporal Dynamics of Flood Regimes and Their Relation to Wetland Landscape Patterns in Dongting Lake from MODIS Time-Series Imagery

Huang

et al. 2015

Remote Sensing

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Dongting Lake, the second largest freshwater lake in China, is well known for its rapid seasonal fluctuations in inundation extents in the middle reach of the Yangtze River, and it is also the lake most affected by the Three Gorges Project. Significant inter-annual and seasonal variations in flood inundations were observed from Moderate Resolution Imaging Spectroradiometer (MODIS) time-series imagery between 2000 and 2012 in the Dongting Lake. Results demonstrated that temporal changes in inundation extents derived from MODIS data were accordant with variations in annual and monthly precipitation and runoff data. Spatial and temporal dynamics of some related parameters of flood regime were analyzed as well, which included flood inundation probability, duration and start/end date of the annual largest flood. Large areas with high flood inundation probability were identified in 2000 and 2002, but relatively small regions with great flood inundation probability occurred in

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“…Hu et al (2014) [60] verified the accuracy of the wetland landscape pattern data and obtained an overall accuracy of 83.99% and a Kappa coefficient of 0.79.…”

Section: Auxiliary Datamentioning

confidence: 61%

Section: Auxiliary Datamentioning

confidence: 99%

Section: Rmentioning

confidence: 99%

Section: Rmentioning

confidence: 99%

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Monitoring Spatial and Temporal Dynamics of Flood Regimes and Their Relation to Wetland Landscape Patterns in Dongting Lake from MODIS Time-Series Imagery

Huang

et al. 2015

Remote Sensing

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“…Em áreas associadas a corpos hídricos e naquelas definidas como zonas húmidas onde existem terrenos hidromórficos, quando as espécies não são nativas, seu desenvolvimento pode ser dra sticamente alterado (HU et al, 2015).…”

Section: Fonte: Arquivo Dos Autores (2015)unclassified

Environmental Diagnosis and Proposed App Recovery Plan Farm Santa Juliana, Cariri Do Tocantins - To

Gonçalves

Souza

Oliveira

et al. 2016

Nucleus

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RESUMO:As áreas de preservação permanente (APP's) às margens dos cursos d'água, no momento atual tem sofrido degradações, onde ocorre a supressão da vegetação e grande pressão sobre o solo. De tal modo, essas áreas que deveriam ser protegidas, vem se tornando mais vulneráveis à degradação ambiental. Este trabalho objetivou a realização de um diagnóstico ambiental na APP localizada a margem direita da represa, fazenda Santa Juliana, no município de Cariri do Tocantins -TO e a elaboração de um Plano de Recuperação de áreas degradadas (PRAD), atenuando os problemas atuais e prevenindo problemas futuros, de acordo com a Legislação Florestal e Ambiental vigente. Foi realizada uma visita técnica ao local, onde foram coletados os dados necessários através de anotações e registros fotográficos para elaboração do Check-list, rede de interação e matriz de interação. Através do diagnóstico ambiental observou-se que a retirada da vegetação ripária teve como consequências o desencadeamento de impactos ambientais de primeira, segunda e demais ordens. O aspecto mais afetado foi o meio físico, o solo, na margem esquerda da represa. Ações antrópicas são necessárias para iniciar o processo de recuperação da área, se o plano de recuperação for executado da maneira adequada, o local passará a ter suas caracterizas edáficas e vegetacionais adequadas para um bom desenvolvimento.Palavras chave: Impacto ambiental. Matriz de interação Área degradada. Medidas mitigatórias.

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Assessment of hydrologic alteration induced by the Three Gorges Dam in Dongting Lake, China

Cheng

Wang

et al. 2018

River Research & Apps

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Water-level variations are an internal aspect of lake ecosystems that play a key role in structuring aquatic diversity and providing ecosystem services. In this study, the hydrologic alteration of Dongting Lake induced by the Three Gorges Dam (TGD) was assessed using indicators of hydrologic alteration and range of variability approach. The results demonstrate a declining trend in autumn water level (0.52-2.26 m) and 5-35 days' advancement for date of minimum annual water level because of the impound of water by the TGD in early autumn. The spatial patterns in the degree of the indicators of hydrologic alteration were different among the sub-lake regions. Annual minimum water level and timing of annual extreme water level suffered a high degree of alteration in the eastern part of the lake, whereas autumn water level, date of minimum water level, and number of reversals in the western part of the lake showed a high degree of alteration. The average integrated degree of hydrologic alteration (D 0 ) for Dongting Lake was 50.40%, indicating that the hydrologic regime suffered a moderate alteration. The most ecologically relevant hydrologic indicators are critical for understanding eco-hydrology. On the basis of principal component analysis, the five selected ecologically relevant hydrologic indicators were 90-day minimum, date of minimum, high pulse duration, date of maximum, and May water level. Further studies are required to understand the impact of the TGD on water conditions in Dongting Lake, especially related to the response of the aquatic ecosystem.

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Monitoring wetland vegetation pattern response to water-level change resulting from the Three Gorges Project in the two largest freshwater lakes of China

Cited by 75 publications

References 26 publications

Monitoring Spatial and Temporal Dynamics of Flood Regimes and Their Relation to Wetland Landscape Patterns in Dongting Lake from MODIS Time-Series Imagery

Monitoring Spatial and Temporal Dynamics of Flood Regimes and Their Relation to Wetland Landscape Patterns in Dongting Lake from MODIS Time-Series Imagery

Environmental Diagnosis and Proposed App Recovery Plan Farm Santa Juliana, Cariri Do Tocantins - To

Assessment of hydrologic alteration induced by the Three Gorges Dam in Dongting Lake, China

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