Citation: | ZHANG Guangshuai, CAI Yueyin, YANG Yucheng, YAN Jishun, SUN Jiawen, WANG Quanming, ZHAN Sichu, HUANG Xiaolu. Evaluation of landscape stability and vegetation carbon storage value in Liaohe delta coastal wetland[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2023, 42(4): 612-621. DOI: 10.12111/j.mes.2022-x-0312 |
Using the method of landscape transfer matrix, landscape pattern and landscape stability model combined the 1985-2020 remote sensing images to explore landscape pattern fluctuation, landscape stability and vegetation carbon storage value in Liaohe delta coastal wetland during the past 35 years. The results showed: total area of natural wetland significantly decreased by 22.52, while total area of the constructed wetland increased 22.29 - fold. Suaeda salsa wetland presents a tendency of seagoing migration. Patches number, patches density and landscape diversity index showed a rising trend, while, index of fragmentation and contagion occurred a gradually reduction. Landscape stability index decreased from 222.64 to 4.34 during 1985 to 2020. There was a significant correlation between landscape stability and reed and suaeda salsa wetland area. Coast reclamation was the major driving force to change the landscape pattern and reduce the landscape stability. Vegetation carbon storage and its value were 215.42×103 t/a and 178 million RMB in 2020. The stability of coastal landscape significantly affected vegetation carbon sequestration.
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