| 农业活动对表层岩溶泉水化学特征及溶解无机碳损失量的影响 |
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| 引用本文： | 张笑微,徐尚全,周小萍.农业活动对表层岩溶泉水化学特征及溶解无机碳损失量的影响[J].中国岩溶,2013,32(2):133-139. |
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| 作者姓名： | 张笑微 徐尚全 周小萍 |
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| 作者单位： | 西南大学地理科学学院/三峡库区生态环境教育部重点实验室,重庆,400715 |
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| 基金项目： | 国家自然科学基金项目(41072192, 41103068)、重庆市科委院士专项（CSTS, 2010BC7004）、中国地质调查局项目(1212011087119)、重庆市国土房管局科技项目、西南大学博士基金项目（SWU111009） |
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| 摘 要： | 以重庆市南川区不同农业活动强度下的3个表层岩溶泉为例,通过分析泉点水化学变化特征来估算不同泉点的DIC损失量(△DIC)和探讨农业活动对岩溶碳汇的影响.研究结果表明:柏树湾泉水温变幅较小,电导率、pH值相对兰花沟泉、后沟泉较低.由于农业活动的影响,兰花沟泉、后沟泉Ca-2+浓度偏高,而HCO3浓度偏低.NO(L)、SO(:) 浓度也因农业活动干扰,表现出后沟泉、兰花沟泉远大于柏树湾泉.随农业活动强度的增加,△DIC也逐渐增大,表现为:柏树湾泉(1.64 mmol/L)＜兰花沟泉(4.28 mmol/L)＜后沟泉(4.36 mmol/L).△DIC与(SO(i)+NO(i))呈正相关,表明农业活动越强烈,DIC损失量越大,岩溶碳汇的损失也随之增大.
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| 关 键 词： | 农业活动 水化学特征 DIC损失量 岩溶碳汇 重庆南川 |
| 收稿时间： | 2012/11/30 0:00:00 |
Influence of agricultural activity on hydro-chemical characteristics and dissolved inorganic carbon leakage in epi-karst springs |
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| ZHANG Xiao wei,XU Shang quan and ZHOU Xiao ping.Influence of agricultural activity on hydro-chemical characteristics and dissolved inorganic carbon leakage in epi-karst springs[J].Carsologica Sinica,2013,32(2):133-139. |
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| Authors: | ZHANG Xiao wei XU Shang quan and ZHOU Xiao ping |
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| Institution: | Key Laboratory of Eco-environments in Three Gorges Reservoir Region,Ministry of Education /School of Geographical Sciences, Southwest University;Key Laboratory of Eco-environments in Three Gorges Reservoir Region,Ministry of Education /School of Geographical Sciences, Southwest University;Key Laboratory of Eco-environments in Three Gorges Reservoir Region,Ministry of Education /School of Geographical Sciences, Southwest University |
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| Abstract: | |
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| Keywords: | agricultural activity hydro-chemistry characteristic DIC leakage karst carbon sink Nanchuan in Chongqing |
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