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Study on the evolution process and driving mechanism of the sandy shoreline of the Qiwang Bay in eastern Guangdong from 1986 to 2019
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Luoyun Zhu1, Tingting Liu1, Renfu Fan2, Yuanting Ding3, Jitao Yu1, 2, *
Haiyang Xuebao | 2022, 44(7) : 82 - 94
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Haiyang Xuebao | 2022, 44(7): 82-94
• Article •
Study on the evolution process and driving mechanism of the sandy shoreline of the Qiwang Bay in eastern Guangdong from 1986 to 2019
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Luoyun Zhu1, Tingting Liu1, Renfu Fan2, Yuanting Ding3, Jitao Yu1, 2, *
Affiliations
  • 1. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China
  • 2. Hainan Academy of Ocean and Fisheries Sciences, Haikou 571126, China
  • 3. School of Geography and Environmental Sciences, Hainan Normal University, Haikou 571158, China
Published: 2022-07-01 doi: 10.12284/hyxb2022100
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A dataset of the high water lines extracted from 113 Landsat images from 1986 to 2019 and the measured profile data from 2015 to 2019 were used to examine the middle-term to long-term shoreline process and driver at the embayment scale in this paper. The results show that the western and eastern beaches of the Qiwang Bay, which is separated by one small bedrock headland, have four and three different spatial characteristics, respectively. More than half of the shorelines behaved nonlinear in their variation trends. Thus, we use the Mann-Kendall method to solve the problem of the lack of basis for the division of time periods. In addition, the east breakwater resulted in the unstable embayment planform due to changing the position of the controlling “headland” and therefore the longshore sediment transport from west to east is the main driver of the most recent shoreline. And the intervening small bedrock headland also influenced the spatial variability of erosion and accretion at the Qiwang Bay. These findings will have important theoretical and practical significance for predicting further shoreline position and reducing the risk of shoreline erosion.

shoreline  /  Landsat image  /  nonlinear change  /  longshore sediment transport  /  headland-bay beach
Luoyun Zhu, Tingting Liu, Renfu Fan, Yuanting Ding, Jitao Yu. Study on the evolution process and driving mechanism of the sandy shoreline of the Qiwang Bay in eastern Guangdong from 1986 to 2019[J]. Haiyang Xuebao, 2022 , 44 (7) : 82 -94 . DOI: 10.12284/hyxb2022100
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Year 2022 volume 44 Issue 7
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Article Info
doi: 10.12284/hyxb2022100
  • Receive Date：2021-07-08
  • Online Date：2026-02-01
  • Published：2022-07-01
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  • Received：2021-07-08
  • Revised：2021-12-10
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Affiliations
    1. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China
    2. Hainan Academy of Ocean and Fisheries Sciences, Haikou 571126, China
    3. School of Geography and Environmental Sciences, Hainan Normal University, Haikou 571158, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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