典型岩溶区不同土地利用方式下雨季、旱季岩溶作用研究 Impact of land-use patterns upon karst processes in t

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典型岩溶区不同土地利用方式下雨季、旱季岩溶作用研究

Impact of land-use patterns upon karst processes in typical karst regions of Jinfo Mountain

2006年4月-2007年4月,通过野外溶蚀标准试片法,测试得出重庆金佛山岩溶区山腰碧潭泉和山顶水房泉两泉域5种典型土地利用方式下的6个测试点雨季和旱季溶蚀量.测试结果表明:雨季溶蚀量明显高于旱季,位于生态保护良好的山顶原始生态区测试点溶蚀率高于保护区、非保护区交界地带且受人类活动影响较大的山腰测试点;同一时段内不同土地利用方式下的测试点溶蚀速率也存在较大差异;6个测试点的年均溶蚀量由大到小依次为:水房泉竹林地>水房泉林地>水房泉草地>碧潭泉林地>碧潭泉灌草丛>碧潭泉耕地.从测试点的土壤基本理化性质分析得出,在研究区域内局地气候(降雨量、温度)影响的基础上,除了土壤CO_2浓度,土壤有机质也是控制两泉域岩溶速率的主要因素之一.

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作 者: 王冬银 谢世友 章程  
作者单位:王冬银(西南大学地理科学学院,重庆,400715;国家土地督察成都局,四川,成都,610091)水利论文MC/s2[8si
谢世友(西南大学地理科学学院,重庆,400715;西南大学三峡库区生态环境教育部重点实验室,重庆,400715)
+G c8yD7aR+w.y~+f0章程(西南大学地理科学学院,重庆,400715;中国地质科学院岩溶地质研究所//国土资源部岩溶动力学重点实验室,广西,桂林,541004) 
刊 名:生态环境学报  ISTIC PKU
英文刊名:ECOLOGY AND ENVIRONMENT 
年,卷(期):2009 18(6) 
分类号:X14 
关键词:岩溶   土地利用   溶蚀量   重庆金佛山   karst   land-use   limestone tablets denudation   Jinfo Mt. in Chongqing  
机标关键词:典型岩溶区土地利用方式雨季旱季岩溶作用typicalprocesses测试点溶蚀速率水房土壤有机质人类活动影响林地保护区主要因素性质分析生态保护局地气候测试结果 
基金项目:中国科技部攻关项目 
下一篇:磷石膏改善苏打碱土理化性质效果分析 Efficiency of Phosphogypsum on Reclaiming Sodic Soils of Song
上一篇:科尔沁沙地三种常见乔木根-土界面水分再分配初探 Hydraulic redistribution between the interface of root
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