Analysis of the spatiotemporal correlation between vegetation pattern and human activity intensity in Yancheng coastal wetland, China
| Autor: | Qiaochu Song, Yulong Yao, Xinqing Zou, Zheng Zang |
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| Rok vydání: | 2019 |
| Předmět: |
Potential impact
geography geography.geographical_feature_category Wetland vegetation Biodiversity Ocean Engineering Wetland Oceanography Remote sensing (archaeology) medicine Environmental science Physical geography Activity intensity medicine.symptom Spatiotemporal correlation Vegetation (pathology) Waste Management and Disposal Nature and Landscape Conservation |
| Zdroj: | Anthropocene Coasts. 2:87-100 |
| ISSN: | 2561-4150 |
| DOI: | 10.1139/anc-2018-0007 |
| Popis: | Remote sensing images were used to reproduce the changes in wetland vegetation since 1987, and the potential impact of policy changes and human activities on vegetation restoration and biodiversity conservation in coastal wetlands was explored based on the landscape pattern index and the human disturbance index (HDI). The results showed that the vegetation displayed a zonal distribution pattern in which, perpendicular to the coastline early in the study period, the vegetation type changed from coastal wetland to bare mud flat with Spartina alterniflora, Suaeda glauca, and Phragmites australis as well as to constructed wetlands dominated by rice. Under the influence of human activities, the number of patches (NP) and mean nearest-neighbor distance (MNN) between patches gradually increased during the study period, while the mean patch size gradually decreased. The patch density increased from 179 (1987) to 296 patches per ha (2013). Additionally, human activity in the study area intensified. The HDI increased from 0.353 (1987) to 0.471 (1987) and showed positive correlations (R2 > 80%, p |
| Databáze: | OpenAIRE |
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