| 引用本文: | 李喜梅,刘巧娟,蒲平娟,等.太白山自然保护区水质现状及变化特征[J].灌溉排水学报,0,():-. |
| Li Xi Mei,Liu Qiao Juan,Pu Pin Juan,et al.太白山自然保护区水质现状及变化特征[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】通过分析太白山自然保护区水质现状，旨在了解保护区水质变化特征及其影响因素，为保护区水质安全提供理论支持。【方法】在保护区设置了11个监测点，测定水体温度、pH、CODCr、Cu、Zn、Cd、Cr、As与Hg等9项指标，采用水质单因子指数与综合指数法对保护区不同类型水体水质现状及时空变化特征进行分析。【结果】除Hg外，保护区其他指标均达到Ⅰ类标准；Hg是影响水质的最关键因素，其污染分担率达56.72%。综合指数结果表明保护区4个湖泊水质属于“较好”，6条河流属于“轻度污染”，而1条河流属于“中度污染”；与2006年相比，2019年保护区水体pH上升、CODCr下降，综合指数由0.68降至0.46，水质有了明显的改善；湖泊水质优于河流水质，南部河流水质优于北部。【结论】太白山自然保护区水体存在Hg超标问题，13年来水质有所提升，大气质量与地表环境是影响保护区水质的主要因素。 |
| 关键词: CODCr；Hg；pH；单因子指数法；综合指数法 |
| DOI： |
| 分类号:X52 |
| 基金项目:陕西太白山国家级自然保护区管理局资助的“太白山自然保护区水质评价”项目 |
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| Status and Spatial and Temporal Variation Characteristics of Water Quality in Taibaishan Nature Reservation |
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Li Xi Mei1, Liu Qiao Juan1, Pu Pin Juan1, Wang Wei Guo1, Gao Peng Cheng2, Zhang Wen Hao2
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1.Taibaishan Nature Reservation Administrative Bureau;2.College of Natural Resources and Environment, Northwest A&F University, Yangling Shaanxi 712100, China
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| Abstract: |
| 【Objective】The objective of the study is to know the variation characteristics and influence factors for water quality in Taibaishan nature reservation area, and to provide advice on water quality safety by analyzing the status of water quality in the reservation area.【Method】 The water from 11 sites of the reservation area were sampled, and 9 items including water temperature, pH, CODCr, Cu, Zn, Cd, Cr, As and Hg were detected. The single factor index and the Comprehensive Factor Index (CFI) were used to analyze the status of different water body and its spatial & temporal variation characteristics. 【Result】All items of the water in the reservation area were up to the first class standard of National Surface Water Environmental Standards except from Hg, which was the key item affecting water quality and covered 56.72% of contribution. The results by CFI showed that 4 lakes was "good", 6 rivers were "light pollution" and 1 river was " medium pollution". pH of 2019 was larger than that of 2016, and CODCr of 2019 was less than that of 2006. The water quality was improved obviously for the decrease of CFI from 0.68 to 0.46. The water quality of 4 lakes was better than that of the rivers, the water quality of the southern rivers was better than that of the northern rivers. 【Conclusion】Hg in the water of the reservation area exceeded the limits of the first class standard, and the water quality increased 13 years later. The atmospheric environment and ground surroundings are the key factors influencing the water quality of the reservation area. |
| Key words: CODCr; Hg; Rivers; Lakes; Single factor index; Comprehensive index |
