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Changes of River Network System in Midstream of Xiangjiang River and Its Response to Urban Expansion
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Run-ze XUAN1, Liu YANG1, 2, 3, Chang FENG1, 2, 3, Qin ZHAN4, Yan-hua YU1, Ling LV5
Water Resources and Power | 2023, 41(5) : 30 - 33
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Water Resources and Power | 2023, 41(5): 30-33
• HYDROLOGY, WATER RESOURCES AND ENVIRONMENT •
Changes of River Network System in Midstream of Xiangjiang River and Its Response to Urban Expansion
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Run-ze XUAN1, Liu YANG1, 2, 3, Chang FENG1, 2, 3, Qin ZHAN4, Yan-hua YU1, Ling LV5
Affiliations
  • 1.College of Geography and Tourism, Hengyang Normal University, Hengyang 421002, China
  • 2.Hunan Environmental Education and Sustainable Development Research Base, Hengyang 421002, China
  • 3.Cooperative Innovation Centre for Digitalization of Cultural Heritage in Ancient Villages and Town, Hengyang 421002, China
  • 4.College of Tourism and Geographic, Jilin Normal University, Siping 136000, China
  • 5.Hengyang Hydrology and Water Resources Survey Bureau of Hunan Province, Hengyang 421099, China
Published: 2023-05-25 doi: 10.20040/j.cnki.1000-7709.2023.20221159
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The expansion of cities and towns has caused a large amount of waters to be compressed, occupied or even disappeared, and the risk of floods in the region has increased sharply. This study is based on Hengyang, a typical city in midstream of Xiangjiang River. Based on expansion speed index and intensity index of Xiangjiang midstream from 2001 to 2016, the linkage relationship between the two is quantitatively analyzed, and the response of water system change under the background of urban expansion is analyzed. The results show that the urban development in midstream of Xiangjiang River can be divided into three stages. The urban expansion is characterized by a high speed and then a low intensity. During the study period, the total number of river systems showed a declining trend, and the channel morphology showed a shrinking state. The change of the structure of river systems was more severe than the change of the number. The basin with few river systems and single structure had a sharp decline. Urban expansion has a close relationship with the change of river system, and has a greater impact on the change of the number of river systems. And it is highly related to the basin with few water systems and single structure. It can be seen that human activities such as urban construction and expansion should minimize the adverse impact on such watersheds.

urban expansion  /  river network system change  /  response research  /  midstream of Xiangjiang River
Run-ze XUAN, Liu YANG, Chang FENG, Qin ZHAN, Yan-hua YU, Ling LV. Changes of River Network System in Midstream of Xiangjiang River and Its Response to Urban Expansion[J]. Water Resources and Power, 2023 , 41 (5) : 30 -33 . DOI: 10.20040/j.cnki.1000-7709.2023.20221159
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Year 2023 volume 41 Issue 5
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221159
  • Receive Date：2022-05-31
  • Online Date：2026-01-28
  • Published：2023-05-25
Article Data
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History
  • Received：2022-05-31
  • Revised：2022-08-14
Funding
Affiliations
    1.College of Geography and Tourism, Hengyang Normal University, Hengyang 421002, China
    2.Hunan Environmental Education and Sustainable Development Research Base, Hengyang 421002, China
    3.Cooperative Innovation Centre for Digitalization of Cultural Heritage in Ancient Villages and Town, Hengyang 421002, China
    4.College of Tourism and Geographic, Jilin Normal University, Siping 136000, China
    5.Hengyang Hydrology and Water Resources Survey Bureau of Hunan Province, Hengyang 421099, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20221159
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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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