喀斯特地区水生光合生物群落结构组成及其对微量元素的影响

郎蕤; 赵敏; 李栋; 鲍乾; 蔡冠霞; 陈波; 杨海全

doi:10.19509/j.cnki.dzkq.tb20220347

喀斯特地区水生光合生物群落结构组成及其对微量元素的影响

doi: 10.19509/j.cnki.dzkq.tb20220347

郎蕤^{1, 2, 3,},
赵敏^{1, 2, ,},
李栋^{1, 2, 3},
鲍乾⁴,
蔡冠霞^{1, 2, 3},
陈波⁵,
杨海全¹

1.
中国科学院地球化学研究所环境地球化学国家重点实验室, 贵阳 550081
2.
中国科学院中国生态系统研究网络普定喀斯特生态系统研究站, 贵州普定 562100
3.
中国科学院大学, 北京 100049
4.
四川师范大学西南土地资源评价与监测教育部重点实验室, 成都 610066
5.
贵州财经大学, 贵阳 550025

基金项目:

国家自然科学基金项目 42177248

国家自然科学基金项目 41673136

国家自然科学基金项目 41807366

贵州省省级科技计划项目 2023-254

中央引导地方科技发展资金项目黔科中引地[2021]4028

详细信息

作者简介:
郎蕤, E-mail: langrui@mail.gyig.ac.cn

通讯作者:
赵敏, E-mail: zhaomin@vip.gyig.ac.cn

中图分类号: X172
计量
- 文章访问数: 372
- PDF下载量: 22
- 被引次数: 0
出版历程
- 收稿日期: 2022-07-11
- 录用日期: 2022-10-06
- 修回日期: 2022-09-27

Composition of the aquatic photosynthetic organism community and its effect on trace elements in karst areas

LANG Rui^{1, 2, 3
,},
ZHAO Min^{1, 2
, ,},
LI Dong^{1, 2, 3},
BAO Qian⁴,
CAI Guanxia^{1, 2, 3},
CHEN Bo⁵,
YANG Haiquan¹

1.
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
2.
Puding Karst Ecosystem Research Station, Chinese Ecosystem Research Network, Chinese Academy of Sciences, Puding Guizhou 562100, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China
4.
Key Laboratory of Land Resources Evaluation and Monitoring in Southwest China of Ministry of Education, Sichuan Normal University, Chengdu 610066, China
5.
Guizhou University of Finance and Economics, Guiyang 550025, China

More Information

Author Bio:
LANG Rui, E-mail: langrui@mail.gyig.ac.cn

Corresponding author: ZHAO Min, E-mail: zhaomin@vip.gyig.ac.cn

摘要

摘要:
微量元素是影响喀斯特地表水体水质的重要因素，水生光合生物在光合代谢过程中能够吸收并去除部分有害元素，然而关于不同水生光合生物群落结构组成对微量元素的吸收效果和去除潜力如何目前则少有研究。基于普定喀斯特生态系统国家野外观测站的野外监测、系统采样和实验测定以及统计分析，构建了由裸岩地、裸土地、耕地、草地和灌丛地5种土地利用组成的植被-土壤-地下水-地表水模拟生态系统，并以其中的地表水生生态系统为研究对象，开展了水生光合生物群落结构组成对微量元素去除潜力及控制机制的研究。结果表明：①地表水水化学和水生光合生物量受季节变化与土地利用类型影响显著；②Cr，Mn，Co，Ni，Fe和Zn 6种微量元素浓度在不同喀斯特水生光合生物系统中存在显著差异，浮游-沉水共存系统对Mn，Co，Ni，Fe和Zn的吸收和去除能力优于单一浮游系统；③喀斯特地区的自然植被恢复（灌丛地和草地）促使地表水体形成的高溶解性无机碳（DIC）环境，有利于沉水植物生长，从而提高了对地表水体中Mn，Co，Ni，Fe和Zn等微量元素的去除潜力。这些认识将有助于岩溶区地表水体水生光合生物群落结构对地表水体微量元素调控机制的研究。
- 微量元素 /
- 土地利用 /
- 水生光合生物 /
- 响应机制 /
- 喀斯特地区
Abstract: Objective
Trace elements are an important factor affecting the water quality of karst surface waters. Aquatic photosynthetic organisms can absorb and remove harmful elements in the process of photosynthetic metabolism. However, little research has been conducted on the absorption effect and removal potential of trace elements by different aquatic photosynthetic organism community structures.
Methods
This study was conducted at the Puding Karst Ecosystem National Observation and Research Station, which constructed a vegetation-soil-groundwater-surface water simulation ecosystem consisting of five types of land use: bare rock land, bare land, cultivated land, grassland and shrub land. Among them, the surface aquatic ecosystem was taken as the research object to carry out research on the removal potential and control mechanism of trace elements by the composition of aquatic photosynthetic organism community structure.
Results
Results showed that (1) The surface water chemistry parameters and aquatic photosynthetic biomass were significantly affected by seasonal changes and land use types; (2) The concentrations of Cr, Mn, Co, Ni, Fe and Zn varies significantly in different aquatic photosynthetic ecosystems, and the absorption and removal of Mn, Co, Ni, Fe, and Zn by the planktonic-submerged coexistence system were better than those of a single planktonic system; (3) The formation of a highly dissolved inorganic carbon (DIC) environment in surface water bodies was promoted by the restoration of natural vegetation (shrublands and grasslands) in karst areas, which was conducive to the growth of submerged plants, simultaneously increasing the impact on Mn, Co, Ni, Fe and Zn removal potential in surface water bodies.
Conclusion
This understanding will contribute to research on the regulatory mechanism of trace elements in surface water by the structure of aquatic photosynthetic organisms in karst areas.
- trace element /
- land use /
- aquatic photosynthetic organism /
- response mechanism /
- karst area
注释:

The authors declare that no competing interests exist.

HTML全文

图 1 普定沙湾模拟试验场^[34]

a.试验场示意图(S和P分别代表泉水和水池)；b.试验场全景图；c.1P~5P分别代表了裸岩地、裸土地、耕地、草地和灌丛地5种不同的土地利用类型所对应的池水

Figure 1. Puding Shawan Simulation Test Site

下载: 全尺寸图片幻灯片

图 2 池水水质参数的时空分布

Figure 2. Spatial and temporal distribution of water quality in the pond

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图 3 池水中浮游藻类生物量的时空变化

Figure 3. Temporal and spatial variation in planktonic algal biomass in the pond

下载: 全尺寸图片幻灯片

图 4 池水中沉水植物生物量的时空变化

Figure 4. Temporal and spatial variation in submerged plant biomass in the pond

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图 5 池水中微量元素平均质量浓度的时空变化

Figure 5. Temporal and spatial variation in the average concentration of trace elements in the pond

下载: 全尺寸图片幻灯片

表 1 池水中水质参数与叶绿素之间相关关系

Table 1. Correlations between water quality parameters and chlorophyll in the pond

相关性系数	系统	水温	pH	电导率	溶解氧	叶绿素
水温	浮游系统	1
水温	浮游-沉水系统	1
pH	浮游系统	0.082	1
pH	浮游-沉水系统	0.533^**	1
电导率	浮游系统	-0.037	-0.691^**	1
电导率	浮游-沉水系统	-0.250	-0.759^**	1
溶解氧	浮游系统	0.389^*	0.580^**	-0.459^**	1
溶解氧	浮游-沉水系统	0.371^**	0.677^**	-0.318^*	1
叶绿素	浮游系统	0.430^**	0.386^*	-0.019	0.580^**	1
叶绿素	浮游-沉水系统	0.755^**	0.516^**	-0.169	0.475^**	1
注：表示在0.05水平(双侧)上显著相关；*表示在0.01水平(双侧)上显著相关

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表 2 2种水生系统中微量元素的平均浓度与显著性

Table 2. Average concentrations and significance of trace elements in two aquatic systems

微量元素	系统	N	ρ_B均值/(μg·L^-1)	\|变率\|	t检验	显著性
V	浮游	40	0.78	0.06	-0.500	0.618
V	浮游-沉水	50	0.82	0.06	-0.500	0.618
Cr	浮游	40	0.36	0.63	-3.946	0.000^**
Cr	浮游-沉水	50	0.59	0.39	-3.946	0.000^**
Mn	浮游	40	8.10	0.71	2.120	0.040^*
Mn	浮游-沉水	50	2.35	2.44	2.120	0.040^*
Co	浮游	40	0.07	0.38	3.050	0.004^**
Co	浮游-沉水	50	0.04	0.62	3.050	0.004^**
Ni	浮游	40	0.34	0.40	3.863	0.000^**
Ni	浮游-沉水	50	0.20	0.67	3.863	0.000^**
Cu	浮游	40	0.60	0.14	-1.182	0.240
Cu	浮游-沉水	50	0.69	0.13	-1.182	0.240
Fe	浮游	40	20.33	0.72	7.371	0.000^**
Fe	浮游-沉水	50	5.73	2.55	7.371	0.000^**
Zn	浮游	40	7.15	0.55	3.750	0.000^**
Zn	浮游-沉水	50	3.25	1.20	3.750	0.000^**
Ba	浮游	40	40.63	0.00	0.006	0.995
Ba	浮游-沉水	50	40.61	0.00	0.006	0.995
注：^表示显著性水平0.05下(双侧)呈现差异; ^*表示显著性水平0.01下(双侧)呈现差异

下载: 导出CSV

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