中国岩溶2017，Vol.36Issue(4)：484-491,8.DOI:10.11932/karst20170409
灵水岩溶泉浮游植物群落结构及其对水环境的指示作用
Structure of the phytoplankton community at the Lingshui karst spring and its implications for water environment
摘要
Abstract
The submerged plants in the Lingshui lake has gradually reduced since 2010,and largely disappeared in 2013.In order to explore the causes of degradation of karst water ecosystem at this place,phytoplankton investigation and monitorin to the water environment have been conducted at the Lingshui and Luobotan karst springs in April,July and October of 2016,respectively.The results show dominant phytoplankton of 16 species belonging to 3 phyla at Lingshui and 13 phytoplankton species belonging to 3 phyla at Luobotan.The phytoplankton similarity reached 60 ％ for both places.The basic types of phytoplankton species did not change during the three survey times,and the abundance was characterized by an order of April,July,and October from high to low.Water quality evaluation based on biodiversity indexes and chlorophyll shows that Luobotan was better than Lingshui,indicating that the water environment might degenerate after submerged plants died.RDA and correlation analysis between phytoplankton and environment shows that total nitrogen (TN) was the decisive factor for phytoplankton community.That phytoplankton has stronger absorptive capacity to nitrogen nutrient might be one of the reasons that submerged plants died in the Lingshui lake.The concentrations of HCO3 and Ca2+ in the karst water environment can indicate the growth state of phytoplankton.关键词
浮游植物/水生生态系统/水环境/岩溶地下水/灵水Key words
phytoplankton/aquatic ecosystem/water environment/karst groundwater/Lingshui分类
天文与地球科学引用本文复制引用
赵红亮,郭芳,刘绍华..灵水岩溶泉浮游植物群落结构及其对水环境的指示作用[J].中国岩溶,2017,36(4):484-491,8.基金项目
中国地质科学院基本科研业务费项目(YYWF201504) （YYWF201504）
广西自然科学基金(2013GXNSFDA019024) （2013GXNSFDA019024）
国家自然科学基金(41172231 （）
41472239) （）
