Research on spatiotemporal changes of water level corresponding to different flood frequency to ENSO in the Pearl River Delta: Research on spatiotemporal changes of water level corresponding to different flood frequency to ENSO in the Pearl River Delta

2016 ◽  
pp. 265-269
Author(s):  
Haiyan Qiao ◽  
Qiong Jia ◽  
Yang Xu
Keyword(s):  
Water Level ◽  
Pearl River Delta ◽  
Flood Frequency ◽  
River Delta ◽  
Pearl River ◽  
The Pearl River Delta ◽  
Spatiotemporal Changes ◽  
The Pearl River

Impact of trends in river discharge and ocean tides on water level dynamics in the Pearl River Delta

2020 ◽  
Vol 157 ◽  
pp. 103634 ◽  
Author(s):  
Yu Cao ◽  
Wei Zhang ◽  
Yuliang Zhu ◽  
Xiaomei Ji ◽  
Yanwen Xu ◽  
...  
Keyword(s):  
Water Level ◽  
River Discharge ◽  
Pearl River Delta ◽  
River Delta ◽  
Pearl River ◽  
Ocean Tides ◽  
The Pearl River Delta ◽  
The Pearl River

scholarly journals Behaviors of extreme water level in the Pearl River Delta and possible impacts from human activities

2007 ◽  
Vol 4 (6) ◽  
pp. 4361-4387 ◽  
Author(s):  
Y. D. Chen ◽  
Q. Zhang ◽  
T. Yang ◽  
C. Xu ◽  
X. Chen ◽  
...  
Keyword(s):  
Water Level ◽  
Relative Frequency ◽  
Pearl River Delta ◽  
Water Levels ◽  
River Delta ◽  
Pearl River ◽  
Linear Regression Method ◽  
Coastal Regions ◽  
The Pearl River Delta ◽  
The Pearl River

Abstract. Trends and variations of the extreme water levels defined as exceeding/falling below certain thresholds (mean ± std) across the Pearl River Delta (PRD) are systematically explored using the linear regression method. Research results indicate that: 1) The upper PRD is dominated by the significant decreasing low water level, and significant increasing low water level can be identified in the lower PRD. The variations of the relative frequency of the high water level are characterized by the decreasing variability in the middle PRD. However more stations show significant changes of the relative frequency of the low water level across the PRD. No confirmative changing patterns of the relative frequency of the low water level can be detected in the middle PRD; 2) When it comes to the seasonal variations of the high/low water level in JJA (high flow periods in the PRD), stations located closer to the estuary tend to exhibit increasing high/low water level. However stations located closer to the upper PRD tend to show decreasing high/low water level. Similar patterns can be identified in the high/low water level in DJF (low flow periods in the PRD); 3) The changes of the water level in the PRD are heavily affected by human interferences, e.g. in-channel dredging, sand mining and the construction of levees. The stations dominated by decreasing water level are mostly located along the river channels featured by highly-intensive dredging. The stations along the coastal regions show significant increasing extreme high/low water level. The coastal regions are not influenced by in-channel dredging, and furthermore, sediment loads from upper and middle PRD are deposited in the river mouths and which will tend to raise the water level in the estuary of the PRD. The findings of this paper may be helpful for local water resource management.

EVOLUTION OF SEDIMENTARY FACIES AND PALEOENVIRONMENT DURING THE LATE QUATERNARY IN WANQINGSHA AREA OF THE PEARL RIVER DELTA

2010 ◽  
Vol 29 (6) ◽  
pp. 35-42
Author(s):  
Jianhua WANG ◽  
Linglong CAO ◽  
Xiaojing WANG ◽  
Xiaoqiang YANG ◽  
Jie YANG ◽  
...  
Keyword(s):  
Pearl River Delta ◽  
Late Quaternary ◽  
Sedimentary Facies ◽  
River Delta ◽  
Pearl River ◽  
The Pearl River Delta ◽  
The Pearl River

scholarly journals An Effective Method for Wetland Park Health Assessment: a Case Study of the Guangdong Xinhui National Wetland Park in the Pearl River Delta, China

Wetlands ◽  
2021 ◽  
Vol 41 (4) ◽  
Author(s):  
Xiao-Shan Fang ◽  
Shuang Liu ◽  
Wei-Zhi Chen ◽  
Ren-Zhi Wu
Keyword(s):  
Health Status ◽  
Pearl River Delta ◽  
High Sensitivity ◽  
Indicator System ◽  
Holistic Health ◽  
River Delta ◽  
Pearl River ◽  
Landscape Indicators ◽  
The Pearl River Delta ◽  
The Pearl River

AbstractThe Guangdong Xinhui National Wetland Park (GXNWP) in the Pearl River Delta is an important stopover for migratory birds in China and East Asia. Due to high levels of interference, high sensitivity and fragile environmental constraints, an efficient method to assess the health status of wetland parks such as the GXNWP is urgently needed for sustainable development. In this study, we proposed a habitat-landscape-service (HLS) conceptual model that can be used at the site scale to evaluate health status in terms of habitats, landscapes and services by considering the complex ecosystem of wetland parks. This HLS model included 28 evaluation indicators, and the indicator weights and health-grade divisions were based on expert scores using both the analytic hierarchy process (AHP) and fuzzy comprehension evaluation (FCE) methods. The results showed that the health status of the GXNWP was at the “subhealthy” level, with a membership function of 0.4643. This study found that habitat indicators (0.5715) were the key factors affecting the GXNWP health status, followed by service indicators (0.2856) and landscape indicators (0.1429). The HLS-AHP-FCE method provides a holistic health evaluation indicator system and diagnostic approach for rapidly developing wetland parks in the Pearl River Delta, China.

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