摘要
为探究不同等级石漠化地区洞穴滴水理化性质的特征及差异,对贵州安顺地区2个不同等级石漠化洞穴内的温度、CO_2与滴水的pH值、电导率、Ca^(2+)等指标进行了为期7个月的监测。结果表明:潜在石漠化洞穴的CO_2浓度随洞穴深度的增加而增加,变化幅度随洞穴深度的增加而降低;滴水pH值表现出冬季低夏季高的季节变化规律,电导率与Ca^(2+)浓度较高但季节变化特征不明显。中度石漠化洞穴的洞内气温与CO_2响应外界环境的速度较快,CO_2浓度在洞穴内分布规律不明显;滴水pH值的季节变化规律不明显,电导率与Ca^(2+)浓度较低,表现出由冬季到夏季降低的趋势。
To explore the characteristics and differences of physicochenmical property between cave drip waters in different rocky desertification degrees,a monitoring was conducted for seven months onindicators of temperature,CO2and pH of drip water,electrical conductivity,Ca2+of two caves withdifferent rocky desertification degrees in Anshun,Guizhou.The result shows that:CO2concentration isincrease with cave depth increasing in cave with potential rocky desertification,its variety scale is decrease with cave depth increasing;the pH of drip water shows a seasonal variation regularity that is low in winter and high in summer;The electrical conductivity and Ca2+concentration are higher,but no obvious characteristic on seasonal variation.Cave temperature and CO2are faster response to the external environment in cave with moderate rocky desertification,no obvious distribution of CO2concentration in cave;The seasonal variation of pH of drip water is unconspicuous,electrical conductivity and Ca2+concentration are lower,shows a decreasing tendency from winter to summer.
作者
李渊
刘子琦
李开萍
Li Yuan;Liu Ziqi;Li Kaiping(School of Karst Science,Guizhou Normal University/State Engineering Technology Institute for Karst Desertification Control,Guiyang 550001,China)
出处
《科技通报》
北大核心
2017年第3期15-20,25,共7页
Bulletin of Science and Technology
基金
国家十三五重点研发计划课题(2016YFC0502607)
贵州师范大学研究生创新基金项目(研创201518)
贵州省科技计划重大专项(黔科合重大专项字[2014]6007号)
关键词
石漠化
洞穴滴水
理化性质
环境
rocky desertification
cave drip water
physicochemical property
environment
