生态环境学报2025，Vol.34Issue(9)：1421-1431,11.DOI:10.16258/j.cnki.1674-5906.2025.09.009
水系连通与碱蓬复播对滨海退化湿地植被恢复及土壤理化性质的影响
The Influence of Water System Connectivity and Reseeding of Suaeda glauca on Vegetation Restoration and Soil Physical and Chemical Properties in Degraded Coastal Wetlands
摘要
Abstract
Coastal wetlands are among the ecosystems that are most frequently disturbed by human activities and experienced the most severe degradation.It is particularly urgent to implement wetland restoration to curb coastal soil degradation,promote the progression and succession of vegetation,and improve the habitats of animals and plants.The impact of remediation on vegetation recovery,soil physicochemical properties,and two enzyme activities of degraded coastal wetlands in Yancheng,Jiangsu Province were studied using three treatment techniques:land leveling+water system connection+Suaeda glaudata resowing(Ⅰ),land leveling+water system connection(Ⅱ),and land leveling+natural growth(Ⅲ).The effects of different restoration measures on the growth of Suaeda glaudata in wetlands,soil physical and chemical properties,and enzyme activities were compared.The results showed that the restoration treatments significantly improved the habitat conditions of coastal wetlands,and the effect was obvious,with 22 plant species returning,covering six families and 19 genera.The vegetation coverage of treatments I and Ⅱ was 58%and 46%,respectively,significantly higher than that of the control(19%),and Suaeda glauca was the dominant species in the total community.After the drainage connection treatment,the changes in the main physical parameters of the soil were insignificant.The mass fractions of soil organic carbon(SOC),total nitrogen(TN),and available phosphorus(AP)decreased significantly,whereas those of available potassium(AK)and soil salinity(SS)increased significantly.The water system connection measures promoted an increase in catalase(CAT)activity in the surface soil,but the effects on alkaline phosphatase(ALP)and soil urease(SUE)activity were not obvious in the short term.Correlation analysis showed that SOC was significantly positively correlated with TN and AP(p<0.01)and significantly negatively correlated with AK and SS(p<0.01).The correlations between the three soil enzyme activities and the soil physical and chemical indicators were not significant(p>0.05).Redundancy analysis indicated that SOC,AK,SS,TN,CAT,and ALP activity at 0‒10 cm depth were significantly positively correlated with vegetation restoration indicators(p<0.05),whereas bulk density(BD),soil water content(SWC),net primary productivity(NPP),AP,and SUE activity were significantly negatively correlated with them(p<0.05).The results can provide technical references for ecological restoration and saline soil improvement in degraded coastal wetlands.关键词
滨海湿地/水系连通/碱蓬复播/植被恢复/土壤理化/酶活性Key words
coastal degraded wetlands/water system connectivity/reseeding of Suaeda glauca/vegetation recovery/soil physical and chemical properties/enzyme activity分类
资源环境引用本文复制引用
李冬林,张姣佼,杨磊,王鹏,何冬梅..水系连通与碱蓬复播对滨海退化湿地植被恢复及土壤理化性质的影响[J].生态环境学报,2025,34(9):1421-1431,11.基金项目
江苏省林业科技创新与推广项目(LYKJ[2022]03) （LYKJ[2022]03）
