基于P-IBI指数的大宁河生态健康度评价
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摘要
为了全面了解大宁河各个河段的具体生态健康状况,为大宁河及其他库区支流的河流管理提供参考依据,根据2017年3月对大宁河源头至河口16个典型断面的浮游植物生态调查分析的结果,选取了25个备选指标,通过分布范围、判别能力和相关性分析,筛选出核心指标,计算了其浮游植物完整性指数(P-IBI)。基于该指数,构建了大宁河河流生态健康度的评价指标体系和标准,并对其进行了评价。结果显示:本次大宁河河流总体处于亚健康状态,其中上游段较为健康,中、下游段处于亚健康状态,局部样点呈现病态,尤其是"龙井湾-双龙镇"段,其生态健康度较差,是受损严重的河段。初步推断这主要是由于该河段人口密集,污染物负荷大造成的。建议对受损河段重点关注,并有针对性地开展生态修复治理。
In order to comprehensively understand the specific ecological health status of the various river sections of the Daning River, and provide reference for river management of the Daning River and other tributaries of Three Gorges Reservoir areas, according to the results of phytoplankton ecological investigation and analysis of 16 typical cross sections from the source of the Danning River to its estuary in March 2017, the core indexes were selected from 25 alternative indexes by the distribution range, discrimination ability and correlation analysis. The phytoplankton index of biotic integrity(P-IBI) was calculated and the evaluation index system and standard of ecological health degree of the Daning River were constructed as well as the health degree was evaluated. The results show that the Daning River is in a sub-healthy state at present, in which, the upper reaches are relatively healthy, the middle and lower reaches are in a sub-healthy state, and the local spots are pathological, especially the Longjing-bay to Shanglong town section, being a severely damaged section. It is preliminarily concluded that this is mainly due to the dense population and the heavy pollutant load. It is recommended to focus on the damaged river sections and carry out targeted ecological restoration management.
In order to comprehensively understand the specific ecological health status of the various river sections of the Daning River, and provide reference for river management of the Daning River and other tributaries of Three Gorges Reservoir areas, according to the results of phytoplankton ecological investigation and analysis of 16 typical cross sections from the source of the Danning River to its estuary in March 2017, the core indexes were selected from 25 alternative indexes by the distribution range, discrimination ability and correlation analysis. The phytoplankton index of biotic integrity(P-IBI) was calculated and the evaluation index system and standard of ecological health degree of the Daning River were constructed as well as the health degree was evaluated. The results show that the Daning River is in a sub-healthy state at present, in which, the upper reaches are relatively healthy, the middle and lower reaches are in a sub-healthy state, and the local spots are pathological, especially the Longjing-bay to Shanglong town section, being a severely damaged section. It is preliminarily concluded that this is mainly due to the dense population and the heavy pollutant load. It is recommended to focus on the damaged river sections and carry out targeted ecological restoration management.
引文
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[2] 朱迪,常剑波.长江中游浅水湖泊生物完整性时空变化[J].生态学报,2004,24(12):2761-2767.
[3] 刘明典,陈大庆,段辛斌,等.应用鱼类生物完整性指数评价长江中上游健康状况[J].长江科学院院报,2010,27(2):1-6.
[4] 王备新,杨莲芳,胡本进,等.应用底栖动物完整性指数B-IBI评价溪流健康[J].生态学报,2005,25(6):1481-1490.
[5] 江源,彭秋志,廖剑宇,等.浮游藻类与河流生境关系研究进展与展望[J].资源科学,2013,35(3):461-472.
[6] 蒙仁宪,刘贞秋.以浮游植物评价巢湖水质污染及富营养化[J].水生生物学报,1988(1):13-26.
[7] 张远,郑丙辉,刘鸿亮.三峡水库蓄水后的浮游植物特征变化及影响因素[J].长江流域资源与环境,2006,15(2):254-258.
[8] 沈强,俞建军,陈晖,等.浮游生物完整性指数在浙江水源地水质评价中的应用[J].水生态学杂志,2012(2):26-31.
[9] 马芊芊.以浮游生物完整性指数评价长江上游干流宜宾至江津段河流健康度[D].重庆:西南大学,2015.
[10] 蔡琨,秦春燕,李继影,等.基于浮游植物生物完整性指数的湖泊生态系统评价:以2012年冬季太湖为例[J].生态学报,2016,36(5):1431-1441.
[11] SL 733-2016中华人民共和国水利部.内陆水域浮游植物监测技术规程[S].北京:中国水利水电出版社,2016.
[12] 胡鸿钧,魏印心.中国淡水藻类:系统分类及生态[M].北京:科学出版社,2006.
[13] Blocksom K A,Kurtenbach J P,Klemm D J,et al.Development and evaluation of the lake macroinvertebrate in tegrity index (LMII) for New Jersey lakes and reservoirs[J].Environmental Monitoring and Assessment,2002(77):311-333.
[14] Barbour M T,Gerritsen J,Griffith G E,et al.A framework for biological criteria for Florida streams using benthic macro2 invertebrates[J].Journal of the North American Benthological Society,1996,15(2):185-211.
[15] Barbour M T,Gerritsen J,Snyder B D,et al.Rapid Bioassessment Protocols for Use in Streams and Wadeable Rivers:Periphyton,Benthic Macro invertebrates,and Fish (Secondedition)[M].Washington,DC:EPA841-0B-99-002.U.S.Environmental Protection Agency,Office of Water,1999.
[16] Maxted J R,Barbour M T,Gerritsen J,et al.Assessment framework for mid-Atlantic coastal plain streams using benthic macroinvertebrates[J].Journal of the North American Benthological Society,2000,19(1):128-144.
[17] 邱光胜,涂敏,叶丹,等.三峡库区支流富营养化状况普查[J].人民长江,2008,39(13):1-4.
[18] 卓海华,孙志伟,郑红艳,等.三峡水库污染物来源及变化趋势分析[J].人民长江,2017,48(16):13-18.
[19] 赵喜亮.我国“十二五”污染减排水环境约束性指标研究[D].北京:中央民族大学,2010.
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