水土保持学报2017，Vol.31Issue(4)：304-310,337,8.DOI:10.13870/j.cnki.stbcxb.2017.04.048
土壤CO2与喀斯特洞穴CO2季节变化响应分析
Seasonal Response Between Soil CO2 and Karst Cave CO2 Concentration
摘要
Abstract
In order to reveal the significance of soil CO2 on cave environment,statistical and regression analysis were conducted on the related data of the cave environmental indexes and the overlying soil properties in 2016.The results showed that the cave air CO2 concentration and soil CO2 concentration presented the significant seasonal variation and obvious hysteresis phenomenon.The difference between summer and winter of cave air CO2concentration corresponded with soil 2 # was 793 ～884 mg/kg.The highest differences of soil water PCO2 and drip water PCO2 between summer and winter were 1.12 and 0.41 respectively.So the drip water PCO2 and soil water PCO2 also showed obviously seasonal variations.The lag phenomenon was shown among soil CO2,cave air CO2,drip water PCO2 and soil water PCO2,e.g.,the coefficients between soil water PCO2 and drip water PCO2were improved from 0.123 without hysteresis to 0.596 with hysteresis.Under the hysteresis,the highest total contribution of soil CO2 concentration to cave air CO2 concentration was 84.6 ％,higher than that without hysteresis.关键词
喀斯特/二氧化碳/滴水PCO2/多元回归分析/双河洞Key words
Karst/soil CO2/drip water PCO2/multiple regression analysis/Shuanghe Cave分类
天文与地球科学引用本文复制引用
殷超,周忠发,田衷珲,曹明达,张结,潘艳喜,汪炎林..土壤CO2与喀斯特洞穴CO2季节变化响应分析[J].水土保持学报,2017,31(4):304-310,337,8.基金项目
国家自然科学基金地区项目“岩溶洞穴CO2迁移变化机制及对洞穴岩溶环境的影响研究”(41361081) （41361081）
贵州省高层次创新型人才培养计划项目——“百”层次人才(黔科合平台人才[2016]5674) （黔科合平台人才[2016]5674）
贵州省科技计划项目“贵州省洞穴调查数据技术服务”(黔科合G字[2014]4004-2号) （黔科合G字[2014]4004-2号）
贵州省重大应用基础研究项目“喀斯特石漠化生态修复及生态经济系统优化调控研究-岩土类型格局”(黔科合JZ字[2014]200201) （黔科合JZ字[2014]200201）
