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当前位置: 首页 > 文章 > 土壤CO_2与喀斯特洞穴CO_2季节变化响应分析 水土保持学报 2017 (4) 304-310+337
Position: Home > Articles > Seasonal Response Between Soil CO_2 and Karst Cave CO_2 Concentration Journal of Soil and Water Conservation 2017 (4) 304-310+337

土壤CO_2与喀斯特洞穴CO_2季节变化响应分析

作  者：
殷超;周忠发;田衷珲;曹明达;张结;潘艳喜;汪炎林
单  位：
贵州师范大学喀斯特研究院;贵州省喀斯特山地生态环境国家重点实验室培育基地
关键词：
喀斯特;二氧化碳;滴水PCO2;多元回归分析;双河洞
摘  要：
为了揭示土壤CO_2对洞穴内环境的意义,对大风洞和响水洞2016年洞内环境指标和上覆土壤的相关数据进行统计与回归分析。结果表明,洞内CO_2浓度、土壤CO_2浓度具有显著的季节性特征,土壤2#对应的洞内空气CO_2在夏冬两季差值达793~884mg/kg。土壤水PCO_2和滴水PCO_2在夏冬两季的差值最高可分别达1.12和0.41,因此洞内滴水PCO_2、土壤水PCO_2也表现出明显的季节性特征。土壤CO_2、洞内空气CO_2、洞内滴水PCO_2和土壤水PCO_2间均表现出一定的滞后现象,如4#土壤水PCO_2与滴水PCO_2的相关系数,由非滞后条件下的0.123上升至滞后条件下的0.596。同时在滞后条件下,土壤CO_2对洞内CO_2的贡献率的总和最高可达84.6%,高于非滞后条件下的值。
译  名：
Seasonal Response Between Soil CO_2 and Karst Cave CO_2 Concentration
作  者：
YIN Chao;ZHOU Zhongfa;TIAN Zhonghui;CAO Mingda;ZHANG Jie;PAN Yanxi;WANG Yanlin;School of Karst Science,Guizhou Normal University;The State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province;
关键词：
Karst;;soil CO2;;drip water PCO2;;multiple regression analysis;;Shuanghe Cave
摘  要：
In order to reveal the significance of soil CO_2 on cave environment,statistical and regression analysis were conducted on the related data of the cave environmental indexes and the overlying soil properties in2016.The results showed that the cave air CO_2 concentration and soil CO_2 concentration presented the significant seasonal variation and obvious hysteresis phenomenon.The difference between summer and winter of cave air CO_2 concentration corresponded with soil 2# was 793~884 mg/kg.The highest differences of soil water PCO_2 and drip water PCO_2 between summer and winter were 1.12 and 0.41 respectively.So the drip water PCO_2 and soil water PCO_2 also showed obviously seasonal variations.The lag phenomenon was shown among soil CO_2,cave air CO_2,drip water PCO_2 and soil water PCO_2,e.g.,the coefficients between soil water PCO_2 and drip water PCO_2 were improved from 0.123 without hysteresis to 0.596 with hysteresis.Under the hysteresis,the highest total contribution of soil CO_2 concentration to cave air CO_2 concentration was 84.6%,higher than that without hysteresis.

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