北京师范大学学报（自然科学版）2018，Vol.54Issue(1)：9-16,8.DOI:10.16360/j.cnki.jbnuns.2018.01.002
滨海湿地生态系统工程师对潮间带土壤环境的影响机制
Impact of ecosystem engineers on intertidal edaphic environment in coastal wetland:mechanisms involved
摘要
Abstract
Human activities aggravate climate change-induced degradation of salt marsh in the Yellow River Delta.Understanding the natural ecosystem,especially ecosystem engineers shaping the environment,is important for ecological restoration.Field investigation and field control experiments in the Yellow River Delta were done in the present work to explore how ecosystem engineers (crab-burrowing activity)impact on intertidal geomorphological processes and edaphic environment in the coastal wetland.Crab-burrowing activity was found to be a key factor for concave-convex micro-topography and geomorphology spatial heterogeneity. Compared to flat microtopography without crab burrows,soil hardness and soil salinity in crab-burrowing concave-convex micro-topography were found to be significantly lower,soil moisture content in concave-convex micro-topography was significantly higher. Combined with field simulation experiment, changing micro-topography and physicochemical indicators made by crab-burrowing could make positive feedback effect for crab-burrowing activity.Artificial simulating ecosystem engineer process can also change geomorphological features of tidal flats,and improving edaphic environment for crabs to live,consequently making scientific and effective guidance for restoration of coastal salt marsh.关键词
潮间带盐沼/蟹类/微地形/土壤环境/修复Key words
intertidal salt marsh/crabs/micro-topography/edaphic environment/restoration分类
资源环境引用本文复制引用
邱冬冬,路峰,闫家国,骆梦,宁中华,蔡燕子,崔保山..滨海湿地生态系统工程师对潮间带土壤环境的影响机制[J].北京师范大学学报（自然科学版）,2018,54(1):9-16,8.基金项目
国家自然科学基金重点资助项目(51639001) （51639001）
国家重点基础研究发展计划(973 计划)资助项目(2013CB430406) （973 计划）
国家水体污染控制与治理科技重大专项资助项目(2009ZX07209-008-03,2009ZX07209-008-04) （2009ZX07209-008-03,2009ZX07209-008-04）
