The spatial pattern of Scirpus mariqueter expansion and the associated mechanism of self-organization using unmanned aerial vehicles and its significance for coastal wetland restoration.
Biogeomorphological process
Geodetector
Greenness Index
Habitat Quality Index
Landscape metrics
Journal
Environmental monitoring and assessment
ISSN: 1573-2959
Titre abrégé: Environ Monit Assess
Pays: Netherlands
ID NLM: 8508350
Informations de publication
Date de publication:
27 Nov 2023
27 Nov 2023
Historique:
received:
20
06
2023
accepted:
07
11
2023
medline:
29
11
2023
pubmed:
27
11
2023
entrez:
27
11
2023
Statut:
epublish
Résumé
Understanding the spatial expansion process of salt marshes and quantifying the factors driving this expansion are crucial for the management and restoration of coastal wetlands. In this study, we aimed to illustrate the expansion process of Scirpus mariqueter using drone remote sensing and quantify its relationship with habitat quality. Our hypothesis was that landscape metrics could serve as valuable indicators for prioritizing habitat restoration efforts along the coast. We utilized drone remote sensing and adopted the simple Greenness Index to reflect the growth status of S. mariqueter. Using this index, we computed the standard deviation ellipse and growth center. To evaluate habitat quality, we developed a method based on our previous research and other relevant reports. We then conducted a quantitative analysis of the expansion process of S. mariqueter in areas with varying habitat quality. We found that S. mariqueter's optimal elevation was 3.7 m, with a range of 2.5 to 4.3 m. The threshold value for soil total nitrogen was 0.3 g/kg, and the tolerance threshold for soil salinity was 2500 ppm. These three factors, elevation, soil total nitrogen, and soil salinity, collectively influenced habitat quality, with weights of 0.68, 0.23, and 0.09, respectively, as determined through geodetector analysis. During the summer, we observed a dominance of dispersal in S. mariqueter, with the species primarily spreading to areas with increased habitat quality. Patch shapes tended to be compact and regular in this season. In contrast, during the autumn, a dominance of decline was observed, with S. mariqueter mainly distributing to areas exhibiting decreased habitat quality. Patch shapes tended to be complex and irregular in the autumn season. Eventually micro-geomorphic modification and patch shape filling methods based on UAV observations are proposed to aid wetland restoration. These findings are of utmost importance for the restoration of coastal wetlands and the enhancement of ecosystem resilience.
Identifiants
pubmed: 38010577
doi: 10.1007/s10661-023-12103-x
pii: 10.1007/s10661-023-12103-x
doi:
Substances chimiques
Soil
0
Nitrogen
N762921K75
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1537Subventions
Organisme : National Key R&D Program of China
ID : 2017YFC0506002
Organisme : National Key R&D Program of China
ID : 2017YFC0506002
Organisme : Natural Science Foundation of China
ID : 31872695
Organisme : Oceanography Administration of Shanghai
ID : HHK-2022-03
Organisme : Oceanography Administration of Shanghai
ID : HHK-2022-03
Informations de copyright
© 2023. The Author(s), under exclusive licence to Springer Nature Switzerland AG.
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