| 贵州喀斯特脆弱生态区退耕还林还草与节水型混农林业发展的途径探讨 |
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| 引用本文： | 梅再美. 贵州喀斯特脆弱生态区退耕还林还草与节水型混农林业发展的途径探讨[J]. 中国岩溶, 2003, 22(4): 293-298. doi: 10.3969/j.issn.1001-4810.2003.04.008 |
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| 作者姓名： | 梅再美 |
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| 作者单位： | 贵州师范大学资源与环境科学系 |
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| 基金项目： | 国家"十五"攻关项目[2001BA606A-09-03],贵州省跨世纪科技人才基金项目[(2000)9808] |
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| 摘 要： | 贵州喀斯特地区生态环境脆弱,山高坡陡,水土流失严重,加之土层浅薄,土壤总量少,基岩裸露面积大,贮水能力低,以及岩石裂隙渗漏性强等特殊的喀斯特地表结构和水文地质条件,形成了湿润气候背景下的临时性干旱— — 喀斯特干旱,地表严重缺水,农业和人畜用水困难,从而加速了生态环境的严重退化。本文阐述了贵州喀斯特脆弱生态环境的现状与特点,提出了实施陡坡退耕还林还草的途径与对策,以及大力发展节水型混农林业的退耕模式。
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| 关 键 词： | 喀斯特 脆弱生态区 退耕还林还草节水型混农林业 发展途径 |
| 文章编号： | 1001-4810(2003)04-0293-06 |
| 修稿时间： | 2003-08-04 |
ON THE DEVELOPMENTAL WAYS FOR RETURNING FARMLAND TO WOODLAND OR GRASSLAND AND WATER-SAVING AGRO-FORESTRY IN THE ECOLOGICAL FRAGILE KARST AREA OF GUIZHOU |
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| MEI Zai-mei. ON THE DEVELOPMENTAL WAYS FOR RETURNING FARMLAND TO WOODLAND OR GRASSLAND AND WATER-SAVING AGRO-FORESTRY IN THE ECOLOGICAL FRAGILE KARST AREA OF GUIZHOU[J]. CARSOLOGICA SINICA, 2003, 22(4): 293-298. doi: 10.3969/j.issn.1001-4810.2003.04.008 |
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| Authors: | MEI Zai-mei |
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| Affiliation: | Department of Resources and Environment Science,Guizhou Normal University |
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| Abstract: | Karst landforms are wildly distributed in Guizhou province and 73% of the total area is covered by carbonate rocks, where the eco-environment is very fragile with widespread mountain crest, severe soil erosion, very thin soil, large areas of exposed bedrock layers and extremely short of available water. Because the rock's crack leakage and other karst earth's surface structure and hydrogeology etc. factors,the provisional aridity-"karst aridity" is formed on the climatically moist area. The earth's surface lacks water seriously for agriculture irrigation men and domestic animals. Therefore, eco-environment degeneration becomes quickened. This paper states the present situation and characteristics of fragile karst eco-environment in Guizhou province, and proposes the model and the countermeasures for returning farmland to wood or grass on steep slopes and developing water-saving agro-forestry finally. |
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| Keywords: | Key words:Karst Fragile environment Returning farmland to woodland or grassland Water-saving agro-forestry Ways |
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