| 人为地质作用对中国西南地区石漠化的影响 |
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| 引用本文： | 刘家仁,王尚彦,况顺达,郑伟,王明章,张权利.人为地质作用对中国西南地区石漠化的影响[J].贵州地质,2008,25(4). |
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| 作者姓名： | 刘家仁 王尚彦 况顺达 郑伟 王明章 张权利 |
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| 作者单位： | 贵州省地质矿产勘查开发局,贵州,贵阳,550004 |
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| 基金项目： | 国家重点基础研究发展计划(973计划No.2006CB403200)项目
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| 摘 要： | 中国西南地区碳酸盐岩分布广泛,石漠化面积很大,严重影响该区的经济和社会发展。已有研究成果认为石漠化的形成因素主要是人类活动和地质背景。本文从一个全新的角度探讨了石漠化的成因,提出导致我国西南地区土地石漠化的主要原因是人类活动的地质效应——人为地质作用,特别是其中的人力剥蚀作用和人力诱导地质作用。露天采掘等人类活动产生人为剥蚀作用可直接制造"人造荒漠",这种成因的石漠化土地面积约占10.7%;绝大部分的土地石漠化是由乱垦乱牧、乱砍滥伐、粗放耕作等不科学的土地利用活动所产生的人力诱导地质作用造成的;工业生产中的"三废"排放,过量采取地下水和采矿活动导致地下水位大幅度下降,也会产生人力诱导地质作用,造成土地石漠化。
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| 关 键 词： | 石漠化 人为地质作用 中国西南 |
The Influence of Man-made Geologic Process to the Rock Desertification in Southwest China |
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| LIU Jia-ren,WANG Shang-yan,KUANG Shun-da,ZHENG Wei,WANG Ming-zhang,ZHANG Quan-li.The Influence of Man-made Geologic Process to the Rock Desertification in Southwest China[J].Guizhou Geology,2008,25(4). |
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| Authors: | LIU Jia-ren WANG Shang-yan KUANG Shun-da ZHENG Wei WANG Ming-zhang ZHANG Quan-li |
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| Abstract: | The carbonate rock distributed widely in southwest China,the range of rock desertification is large,influenced the social and economic development of this region terribly.It's studied that the human activities and geological background caused the rock desertification.In this paper,it discusses the causation of rock desertification in a new range,points out the main reason caused rock desertification is the geologic effect of human activities-man-made geologc process,especially the human weathering process and human induced process.Open extraction and other human activities caused man-made weathering process can make man-made desert directly,the area of this kind of rock desertification is about 10.7%.Most rock desertification are caused by the human induced process by unauthorized reclamation and overgrazing,destructive lumbering of forests,extensive cultivation and other unscientific land use behaviors.The discharge of three wastes in industry,overpumping groundwater and mining caused the water table lower,also can make human induced process and form rock desertification. |
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| Keywords: | rock desertification man-made geologic process southwest China |
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