| 中国西南岩溶山地石漠化转型演变解析 |
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| 引用本文： | 李阳兵.中国西南岩溶山地石漠化转型演变解析[J].中国岩溶,2021,40(4):698-706. |
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| 作者姓名： | 李阳兵 |
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| 作者单位： | 贵州师范大学地理与环境科学学院 |
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| 基金项目： | 国家重点研发计划项目（2016YFC0502300）；国家自然科学基金项目（41661020） |
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| 摘 要： | 系统阐明岩溶石漠化的演变趋势，对正确认识岩溶石漠化发生发展过程及实施有效的石漠化综合防治措施具有重要意义。研究表明:（1）驱动石漠化发生与形成的因素有岩溶山地农户生计单一、土地压力大、土地承载力低和生态脆弱等4个主要因素；石漠化发生扩展其实质就是在低土地承载力背景下，过伐、过垦、过牧等土地利用方式触发了岩溶山地土地退化，即石漠化。（2）岩溶石漠化在发生发展到一定阶段后，随着社会经济背景的演变和石漠化驱动因素的变化、消失，石漠化面积扩张的趋势会发生根本性的转折，即石漠化转型。（3）中国西南岩溶山地土地利用方式改变引起生态系统机制改变，从而引起石漠化转型演变。石漠化转型是土地利用系统对经济社会发展与生态系统综合作用的响应，符合经济社会发展和生态系统演化的总体趋势。（4）中国西南岩溶山地石漠化演变对揭示该区域人地关系变化具有指导意义。
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| 关 键 词： | 岩溶山地 石漠化转型 土地利用方式 中国西南地区 |
Analysis on transformation and evolution of rocky desertification in karst mountainous areas of southwest China |
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| LI Yangbing.Analysis on transformation and evolution of rocky desertification in karst mountainous areas of southwest China[J].Carsologica Sinica,2021,40(4):698-706. |
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| Authors: | LI Yangbing |
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| Institution: | School of Geography and Environmental Science，Guizhou Normal University |
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| Abstract: | Systematic clarifying the evolution trend of karst rocky desertification is of great significance to correctly understand the occurrence and development process of karst rocky desertification and implement effective comprehensive control measures of rocky desertification. The results shows that， （1） There are 4 main factors driving the occurrence and formation of rocky desertification，such as single livelihood of farmers in karst mountainous areas， high land pressure， low land carrying capacity and fragile ecology. The essence of the occurrence and expansion of karst rocky desertification is that under the background of low land carrying capacity， land use patterns such as over-cutting， over-cultivation and over-grazing triggered land degradation in karst mountainous areas， that is， rocky desertification. （2） After karst rocky desertification occurs and develops to a certain stage， with the evolution of social and economic background and the change and disappearance of rocky desertification driving factors， the trend of rocky desertification area expansion will undergo a fundamental turning point， namely，the transformation of rocky desertification. （3） The change of land use pattern in karst mountainous areas in southwest China leads to the change of ecosystem mechanism， which leads to the transformation and evolution of rocky desertification. Rocky desertification transformation is the response of land use system to the comprehensive action of economic and social development and ecosystem， which is in line with the general trend of economic and social development and ecosystem evolution. （4） The transformation and evolution of rocky desertification in karst mountainous areas in southwest China has a guiding significance for revealing the change of man-land relationship in karst mountainous areas of southwest China. |
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