A study on coupling of the grassland pattern and the flood process in Poyang Lake based on the island biogeography theory
As a typical type of landscape in Poyang Lake, the largest freshwater lake in China, grassland has been deeply disturbed by the flooding process. However, how the vegetation landscape diversity responds to the flooding process of Poyang Lake remains unclear. In this paper, we randomly selected 10 gr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-08-01
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| Series: | Journal of Water and Climate Change |
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| Online Access: | http://jwcc.iwaponline.com/content/13/8/2991 |
| _version_ | 1828176148456013824 |
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| author | Shiqi Luo Wenbo Chen Qiongbing Xiong Lei He |
| author_facet | Shiqi Luo Wenbo Chen Qiongbing Xiong Lei He |
| author_sort | Shiqi Luo |
| collection | DOAJ |
| description | As a typical type of landscape in Poyang Lake, the largest freshwater lake in China, grassland has been deeply disturbed by the flooding process. However, how the vegetation landscape diversity responds to the flooding process of Poyang Lake remains unclear. In this paper, we randomly selected 10 grasslands in the period of a normal water level from 2010 to 2019 to study the coupling relationship between the vegetation landscape diversity and flooding process, and established the related models based on the island biogeography theory. The results are as follows. (1) There is a positive correlation between the grassland vegetation landscape diversity and grassland area, the best fitting model is the logarithmic function. (2) Using the general dynamic model of island biogeography as a reference, the model of diversity–area–flooding established by using the area of grassland and duration as predictor variables has the highest goodness-of-fit. (3) If grassland was flooded for 120–130 days and the maximum depth of flooding is not more than 2.5 m every year, the vegetation landscape diversity in grasslands will be the highest. The findings have provided an extension to the study of the response of vegetation to flooding processes, and provide a certain theoretical basis for the protection and management of the Poyang Lake ecosystem.
HIGHLIGHTS
The vegetation landscape diversity is positively correlated with the grassland area in Poyang Lake, China. The island biogeography theory can well explain the vegetation landscape diversity.;
Flooding duration affects the vegetation landscape diversity more than maximum depth.;
When the grassland is flooded for 120–130 days and the flooding depth does not exceed 2.5 m, the vegetation landscape diversity will be the highest.; |
| first_indexed | 2024-04-12T04:39:09Z |
| format | Article |
| id | doaj.art-9443199c027b4d8ba0555b747883e625 |
| institution | Directory Open Access Journal |
| issn | 2040-2244 2408-9354 |
| language | English |
| last_indexed | 2024-04-12T04:39:09Z |
| publishDate | 2022-08-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Journal of Water and Climate Change |
| spelling | doaj.art-9443199c027b4d8ba0555b747883e6252022-12-22T03:47:43ZengIWA PublishingJournal of Water and Climate Change2040-22442408-93542022-08-011382991300310.2166/wcc.2022.100100A study on coupling of the grassland pattern and the flood process in Poyang Lake based on the island biogeography theoryShiqi Luo0Wenbo Chen1Qiongbing Xiong2Lei He3 East China University of Technology, Nanchang 330013, China East China University of Technology, Nanchang 330013, China East China University of Technology, Nanchang 330013, China Tourism and Urban Management College of Jiangxi University of Finance and Economics, Nanchang 330013, China As a typical type of landscape in Poyang Lake, the largest freshwater lake in China, grassland has been deeply disturbed by the flooding process. However, how the vegetation landscape diversity responds to the flooding process of Poyang Lake remains unclear. In this paper, we randomly selected 10 grasslands in the period of a normal water level from 2010 to 2019 to study the coupling relationship between the vegetation landscape diversity and flooding process, and established the related models based on the island biogeography theory. The results are as follows. (1) There is a positive correlation between the grassland vegetation landscape diversity and grassland area, the best fitting model is the logarithmic function. (2) Using the general dynamic model of island biogeography as a reference, the model of diversity–area–flooding established by using the area of grassland and duration as predictor variables has the highest goodness-of-fit. (3) If grassland was flooded for 120–130 days and the maximum depth of flooding is not more than 2.5 m every year, the vegetation landscape diversity in grasslands will be the highest. The findings have provided an extension to the study of the response of vegetation to flooding processes, and provide a certain theoretical basis for the protection and management of the Poyang Lake ecosystem. HIGHLIGHTS The vegetation landscape diversity is positively correlated with the grassland area in Poyang Lake, China. The island biogeography theory can well explain the vegetation landscape diversity.; Flooding duration affects the vegetation landscape diversity more than maximum depth.; When the grassland is flooded for 120–130 days and the flooding depth does not exceed 2.5 m, the vegetation landscape diversity will be the highest.;http://jwcc.iwaponline.com/content/13/8/2991flooding processgrasslandisland biogeographylandscape diversitypoyang lake |
| spellingShingle | Shiqi Luo Wenbo Chen Qiongbing Xiong Lei He A study on coupling of the grassland pattern and the flood process in Poyang Lake based on the island biogeography theory Journal of Water and Climate Change flooding process grassland island biogeography landscape diversity poyang lake |
| title | A study on coupling of the grassland pattern and the flood process in Poyang Lake based on the island biogeography theory |
| title_full | A study on coupling of the grassland pattern and the flood process in Poyang Lake based on the island biogeography theory |
| title_fullStr | A study on coupling of the grassland pattern and the flood process in Poyang Lake based on the island biogeography theory |
| title_full_unstemmed | A study on coupling of the grassland pattern and the flood process in Poyang Lake based on the island biogeography theory |
| title_short | A study on coupling of the grassland pattern and the flood process in Poyang Lake based on the island biogeography theory |
| title_sort | study on coupling of the grassland pattern and the flood process in poyang lake based on the island biogeography theory |
| topic | flooding process grassland island biogeography landscape diversity poyang lake |
| url | http://jwcc.iwaponline.com/content/13/8/2991 |
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