生物土壤结皮
生物土壤结皮(biological soil crusts, BSCs, 简称生物结皮)是由蓝细菌、藻类、地衣、苔藓等隐花植物和土壤微生物及其他生物通过菌丝体、假根和分泌物等与土壤表层颗粒胶结形成的一种复合体,是干旱和半干旱气候土壤表面的生物群落[1]。生物土壤结皮遍布世界各地,依地形、土质、气候、植群、微生境、扰动的相异由不同物种组成。
生物土壤结皮具有重要的生态角色,有固炭、固氮、保持结构稳定的功能。也影响土表反照率、water relations、种子发芽、维管束植物的养分含量 。[2]
生物土壤结皮一般划分为藻结皮、地衣结皮和藓结皮3个主要演替阶段[3]。
参考文献
编辑- ^ Jin, Xinying; Zhang, Xiaochong; Jin, Duo; Chen, Yun; Li, Jingyu. Diversity and seasonal dynamics of bacteria among different biological soil crusts in the southeast Tengger Desert. Biodiversity Science. 2020-06-20, 28 (6): 718. doi:10.17520/biods.2019298.
- ^ Belnap, Jayne. Cryptobiotic Soils: Holding the Place in Place. U.S. Geological Survey. August 5, 2013 [May 10, 2016]. (原始内容存档于May 10, 2016).
- ^ Su, Y.-G.; Li, X.R.; Zheng, J.-G.; Huang, G. The effect of biological soil crusts of different successional stages and conditions on the germination of seeds of three desert plants. Journal of Arid Environments. 2009-10, 73 (10): 931–936. doi:10.1016/j.jaridenv.2009.04.010.