华东师范大学学报(自然科学版) ›› 2021, Vol. 2021 ›› Issue (2): 160-170.doi: 10.3969/j.issn.1000-5641.2021.02.016

• 生态与环境科学 • 上一篇    

奉贤滨海湿地蟹类和蟹洞的分布特征及影响因子

李翔1,2(), 田慧敏1,2, 吴靖颖1,2, 陈思雨1,2, 赵明明1,2, 徐平1,2, 陈雪初1,2, 由文辉1,2,*()   

  1. 1. 华东师范大学 生态与环境科学学院, 上海 200241
    2. 华东师范大学 上海城市化生态过程与生态恢复重点实验室, 上海 200241
  • 收稿日期:2020-05-29 出版日期:2021-03-25 发布日期:2021-04-01
  • 通讯作者: 由文辉 E-mail:sally_li1994@163.com;whyou@admin.ecnu.edu.cn
  • 基金资助:
    国家重点研发计划(2017YFC0506002)

Distribution characteristics and influencing factors of crabs and crab burrows in the Fengxian coastal wetland

Xiang LI1,2(), Huimin TIAN1,2, Jingying WU1,2, Siyu CHEN1,2, Mingming ZHAO1,2, Ping XU1,2, Xuechu CHEN1,2, Wenhui YOU1,2,*()   

  1. 1. School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
    2. Shanghai Key Laboratory for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai 200241, China
  • Received:2020-05-29 Online:2021-03-25 Published:2021-04-01
  • Contact: Wenhui YOU E-mail:sally_li1994@163.com;whyou@admin.ecnu.edu.cn

摘要:

研究了奉贤滨海湿地3种生境类型中的蟹类、蟹洞分布特征以及影响因子, 揭示了影响蟹类及其洞穴分布的主要影响因子, 加深了对穴居蟹类生活习性的认识. 结果显示: ①天津厚蟹多度在高潮滩芦苇生境高于低潮滩互花米草生境、中潮滩芦苇-互花米草混合生境(p < 0.01), 褶痕相手蟹多度在生境间无显著差异( p > 0.05); ②高潮滩芦苇生境中, 蟹洞密度显著高于低潮滩互花米草生境、中潮滩芦苇-互花米草混合生境( p < 0.05), 蟹洞开口直径显著低于低潮滩互花米草生境、中潮滩芦苇-互花米草混合生境( p < 0.05); ③蟹类多度与蟹洞密度分布不存在显著的线性关系( p > 0.05), 但天津厚蟹多度与蟹洞密度具有极显著的正相关性( p < 0.01); ④蟹类多度与植物地下生物量呈负相关关系( p < 0.01); ⑤蟹洞密度与植被盖度与密度之间呈负相关关系, 与相对高程、含水率、电导率、总有机碳含量与总氮含量呈正相关关系, 其中, 相对高程是与蟹洞密度的相关性排序最高的生境因子.

关键词: 滨海湿地, 蟹类, 蟹洞, 分布特征, 影响因子

Abstract:

This study investigated the distribution characteristics and influencing factors of crabs and crab burrows in Fengxian coastal wetland to reveal the main influencing factors in crabs’ and crab burrows’ distribution and deepen the understanding of crabs’ living habits. The results showed that: ① The abundance of Helice tientsinesis in the high-marsh Phragmites australis habitat is higher than that in the middle-marsh Phragmites australis -Spartina alterniflora mixed habitat and low-marsh Spartina alterniflora habitat (p < 0.01). However, there is no significant difference in the abundance of Sesarma plicate between habitats (p > 0.05). ② The density of crab burrows in the high-marsh Phragmites habitat is significantly higher than that in the middle-marsh Phragmites-Spartina mixed habitat and the low-marsh Spartina habitat (p < 0.05), while the average opening diameter of crab burrows is significantly lower than that in the middle-marsh Phragmites -Spartina mixed habitat and the low-marsh Spartina habitat (p < 0.05). ③ There is no significant linear relationship between crab abundance and the density of crab burrows( p > 0.05), while there is a significant positive correlation between the density of crab burrows and the abundance of Helice tientsinesis ( p < 0.01). ④ Crab abundance is negatively correlated with plant underground biomass ( p < 0.01). ⑤ There is a negative correlation between the density of crab burrows and vegetation coverage and plant density. The relative elevation, water content, conductivity, total organic carbon content, and total nitrogen content are positively correlated with the density of crab burrows. Among these factors, the relative elevation is the habitat factor with the highest correlation with the density of crab burrows.

Key words: coastal wetlands, crabs, crab burrows, distribution characteristics, impact factors

中图分类号: