南涧县负氧离子浓度分布特征及影响因素分析  

ANALYSIS OF DISTRIBUTION CHARACTERISTICS AND INFLUENCING FACTORS OF NEGATIVE OXYGEN ION CONCENTRATION IN NANJIAN COUNTY

作　　者：万花 沈营珠 陈彩霞 高志伟 WAN Hua;SHEN Yingzhu;CHEN Caixia;GAO Zhiwei(Nanjian Meteorological Bureau of Yunnan,Nanjian 675700,Yunnan,China;Dali Meteorological Bureau of Yunnan,Dali 671000,Yunnan,China;Dali National Climate Observatory,Dali 671000,Yunnan,China;Hengduan Mountains Disaster Weather Research Center of China Meteorological Administration,Kunming 650034,Yunnan,China)

机构地区：[1]南涧彝族自治县气象局,云南南涧675700 [2]大理白族自治州气象局,云南大理671000 [3]大理国家气候观象台,云南大理671000 [4]中国气象局横断山区(低纬高原)灾害性天气研究中心,云南昆明650034

出　　处：《云南地理环境研究》2024年第1期65-76,共12页Yunnan Geographic Environment Research

基　　金：2022年度云南基层台站气象科技创新与能力提升计划项目(青年项目STIAP202238);云南省气象局高原湖泊生态气象服务创新团队(2022CX08);2022年度云南基层台站气象科技创新与能力提升计划项目(重点项目STIAP202241).

摘　　要：选取南涧县2022年5月至2023年4月负氧离子实时监测数据和2016—2019年遥感卫星数据,利用归一化植被指数(NDVI)近似估算植被覆盖度(FVC)和数理统计等方法对南涧县3个站点负氧离子浓度分布特征及影响因素进行分析。结果表明:(1)南涧县负氧离子浓度有明显的日变化特征,整体上白天高于夜间,含量超过空气清新度5级标准,对人体健康很有利。(2)南涧土林公园各月负氧离子浓度变化较大,月平均浓度2494个/cm^(3);无量药谷负氧离子浓度具有明显的月变化特征,最高值出现在9月,为2960个/cm^(3);无量山樱花谷负氧离子浓度整体较高,月平均浓度2730个/cm^(3),全年各月负氧离子浓度均大于2000个/cm^(3)。南涧负氧离子浓度秋季最高,夏季次之,冬季略高于春季。(3)各类气象要素对负氧离子浓度的影响不同。负氧离子浓度与气温、风速呈正相关;白天与相对湿度呈负相关,夜间与相对湿度呈正相关。(4)植被覆盖度是南涧县负氧离子浓度的主要影响因素之一,植被覆盖度高的区域一般负氧离子浓度高于植被覆盖度低的区域,基于卫星遥感的植被覆盖度可为负氧离子站点布设选址提供更便捷、准确的科学依据。南涧负氧离子年平均浓度大于2300个/cm^(3),高于“中国天然氧吧”申报对负氧离子浓度的基本要求。Selecting real-time monitoring data of negative oxygen ions from May 2022 to April 2023 and remote sensing satellite data from 2016 to 2019 in Nanjian County,the distribution characteristics and influencing factors of negative oxygen ion concentration at three stations in Nanjian County were analyzed using normalized vegetation index(NDVI)approximation to estimate vegetation coverage and mathematical statistics.The results show that:(1)The concentration of negative oxygen ions in Nanjian County has obvious diurnal variation characteristics,with higher levels during the day than at night.The concentration of negative oxygen ions exceeds the air freshness level 5 standard,which is beneficial for human health.(2)The negative oxygen ion concentration in Nanjian Tulin Park varies greatly in each month,with an average monthly concentration of 2494/cm^(3);The concentration of negative oxygen ions in Wuliang Medicinal Valley exhibits significant monthly variation characteristics,with the highest value appearing in September at 2960/cm^(3);The overall concentration of negative oxygen ion concentration in Wuliangshan Cherry Blossom Valley is generally high,with an average monthly concentration of 2730/cm^(3).The concentration of negative oxygen ions in each month throughout the year is greater than 2000/cm^(3).The concentration of negative oxygen ions in Nanjian is highest in autumn,followed by summer,and slightly higher in winter than in spring.(3)The impact of various meteorological factors on the concentration of negative oxygen ions varies.The concentration of negative oxygen ions is positively correlated with temperature and wind speed;There is a negative correlation between daytime and relative humidity,and a positive correlation between nighttime and relative humidity.(4)vegetation coverage is one of the main influencing factors of negative oxygen ion concentration.Areas with high vegetation coverage generally have higher negative oxygen ion concentration than areas with low vegetation coverage.Vegetation coverage b

关 键 词：负氧离子 空气质量 生态旅游 天然氧吧 南涧县 

分 类 号：P49[天文地球—大气科学及气象学]