辽河口湿地景观稳定性及其植被碳储量价值评估  

Evaluation of landscape stability and vegetation carbon storage value in Liaohe delta coastal wetland

作　　者：张广帅 蔡悦荫[1,2] 杨玉成 闫吉顺 孙家文[1,2] 王权明 詹思楚[4] 黄小露 ZHANG Guangshuai;CAI Yueyin;YANG Yucheng;YAN Jishun;SUN Jiawen;WANG Quanming;ZHAN Sichu;HUANG Xiaolu(National Marine Environmental Monitoring Center,Dalian 116023,China;State Environmental Protection Key Laboratory of Marine Ecosystem Restoration,Dalian 116023,China;Panjin Forestry and Wetland Conservation Service Center,Panjin 124010,China;Geological society of Liaoning,Shenyang 110033,China)

机构地区：[1]国家海洋环境监测中心,辽宁大连116023 [2]国家环境保护海洋生态环境整治修复重点实验室,辽宁大连116023 [3]盘锦市林业湿地保护服务中心,辽宁盘锦124010 [4]辽宁省地质学会,辽宁沈阳110033

出　　处：《海洋环境科学》2023年第4期612-621,共10页Marine Environmental Science

基　　金：国家自然科学基金项目(42201070);国家重点研发计划项目(SQ2022YFC3100049);国家环境保护海洋生态环境整治修复重点实验室自主创新基金(2022-Z-007)。

摘　　要：为阐明湿地景观格局对人类活动的响应,定量评估河口湿地植被碳储量价值,本文基于1985-2020年遥感影像数据,应用景观转移矩阵、景观格局和景观稳定性模型,揭示了近35年来辽河口湿地景观格局、景观稳定性及植被碳储量演变特征。研究结果表明:1985-2020年,辽河口天然湿地面积减少了22.52%,人工湿地面积增加了22.29倍,近35年来,盐地碱蓬湿地有整体向海迁移的趋势,而芦苇湿地总体空间位置未发生显著变化;辽河口湿地景观的斑块数量、斑块密度和香农多样性指数不断增长,而聚合度指数与蔓延度指数则不断减小,景观格局呈破碎化和复杂化趋势发展;1985-2020年,景观稳定性指数从222.64降至4.34,景观稳定性与天然湿地面积具有显著正相关性,围海养殖、填海造地、农业围垦等活动是造成景观格局稳定性下降的重要因素;2020年,辽河口湿地植被碳储量和碳储量价值分别为215.42×10^(3) t/a和1.78亿元,受到景观格局稳定性显著影响。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 1985to 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 215.42×10^(3) t/a and 178 million RMB in 2020.The stability of coastal landscape significantly affected vegetation carbon sequestration.

关 键 词：景观格局特征 景观稳定性 碳储量价值 辽河口湿地 

分 类 号：X171[环境科学与工程—环境科学]