喀斯特石漠化地区苔藓植物功能性状与微生境的关系  

Relationships between Bryophytes Functional Traits and Microhabitats in Karst Desertification Area

作　　者：曾辰午 李宗峰 张学朝 陈明月 张梅 陶建平 ZENG Chenwu;LI Zongfeng;ZHANG Xuechao;CHEN Mingyue;ZHANG Mei;TAO Jianping(School of Life Sciences,Southwest University/Key Laboratory of Eco-Environments in Three Gorges Reservoir Region(Ministry of Education),Chongqing 400715,China)

机构地区：[1]西南大学生命科学学院/三峡库区生态环境教育部重点实验室,重庆400715

出　　处：《西南大学学报（自然科学版）》2023年第3期131-137,共7页Journal of Southwest University(Natural Science Edition)

基　　金：国家重点研发计划子课题(2016YFC0502304);2020年西南大学“大学生创新创业训练计划”项目(X202010635268)。

摘　　要：为探究苔藓植物功能性状与微生境之间的关系,在中梁山喀斯特石漠化地区选择坡度、坡向和岩性相对一致的缓坡,调查优势苔藓植物功能性状及其所处的微生境因子.结果表明:研究区域内微生境可划分为石沟、石缝和石洞3种类型;苔藓植物生物量存在明显差异,石洞型微生境生物量显著大于其他两者(p<0.05);相关性分析和冗余分析均表明:微生境宽度、微生境深度、土壤厚度、土壤pH和相对光强是影响苔藓植物功能性状(苔藓植物生物量、苔藓厚度、苔藓盖度)的主要环境因子,微生境长度与苔藓植物生物量无明显关联.研究结果对退化植被恢复和景观再造具有一定的指导作用.In order to investigate the relationships between the micro-habitats and bryophytes functional traits,a gentle slope with a constant slope aspect and lithology was selected to be the experimental plot so as to investigate bryophytes’ functional traits and relative factors of micro-habitat types.The results show that the micro-habitats can be divided into three types namely:rocky ditch,swallet and stone cavern.There were significant variations in bryophyte biomass.The bryophyte biomass of stone cavern type was significantly higher than that of the other two micro-habitats types(p<0.05).Both correlation analysis and redundancy analysis showed that the width and depth of micro-habitat,and soil thickness,soil pH,and relative light intensity were the main environmental factors affecting the bryophyte functional traits(biomass,bryophyte thickness and bryophyte coverage).There was no significant correlation between micro-habitat length and bryophyte biomass.The micro-habitats in karst rocky desertification area affect the functional traits of bryophytes in different ways.The research results have a certain instruction function for the restoration of degraded vegetation and landscape reconstruction.

关 键 词：苔藓植物 微生境 微型地貌 功能性状 

分 类 号：Q948.114[生物学—植物学]