| 陕北农牧交错带土地荒漠化本质特性研究 |
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| 引用本文： | 常庆瑞,安韶山,刘京,文治国.陕北农牧交错带土地荒漠化本质特性研究[J].土壤学报,2003,40(4):518-523. |
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| 作者姓名： | 常庆瑞 安韶山 刘京 文治国 |
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| 作者单位： | 1. 西北农林科技大学资源与环境学院,陕西杨凌,712100
2. 中国科学院、水利部水土保持研究所,陕西杨凌,712100 |
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| 基金项目： | 国家自然科学基金资助项目(49971005,30190790) |
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| 摘 要： | 通过分析陕北农牧交错带土壤的机械组成、物质成分和理化性质 ,探讨了土地荒漠化的本质。结果表明 :土壤受风沙作用 ,细粒物质逐渐减少 ,表层消失 ,或者被流沙取代 ,原土壤剖面被覆盖在沙层之下 ;土壤质地出现沙化 ,颗粒组成变粗 ;土壤有机质及养分含量减少 ,保水保肥性能降低 ;土壤形成以现代侵蚀和风沙沉积为主 ,物质淋溶和化学风化微弱 ,进化与退化同时共存。
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| 关 键 词： | 农牧交错带 土地荒漠化 土壤性质 发生过程 |
| 收稿时间： | 2001/8/14 0:00:00 |
| 修稿时间： | 2001年8月14日 |
STUDY ON THE CHARACTERISTIC OF LAND DESERTIFICATION IN THE AGRICULTURE AND ANI MAL HUSBANDRY INTERLACE ZONE OF NORTHERN SHAANXI |
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| Chang Qing-rui,An Shao-shan,Liu Jing and Wen Zhi-guo.STUDY ON THE CHARACTERISTIC OF LAND DESERTIFICATION IN THE AGRICULTURE AND ANI MAL HUSBANDRY INTERLACE ZONE OF NORTHERN SHAANXI[J].Acta Pedologica Sinica,2003,40(4):518-523. |
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| Authors: | Chang Qing-rui An Shao-shan Liu Jing and Wen Zhi-guo |
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| Affiliation: | Chang Qing-rui 1 An Shao-shan 2 Liu Jing 1 Wen Zhi-guo 1 |
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| Abstract: | Soil mechanical composition, physical features, chemical properties, and total c omposition of chemical elements of soils are measured for studying the land dese rtification. The results indicate that fine soil grains decrease progressively b y wind and water erosion. Surface layer of soil vanished and it is covered with the sand layer. Soil texture tends sandification, and the contents of organic ma tter and nutrients reduce progressively. Ability in preserving moisture and fert ility fall down. Soil formation is in the stage of modern erosion and sand depos ition, leaching and weathering are weak. The evolution coexists with the degener ation in the development of land resources. |
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| Keywords: | Agriculture and animal husbandry interlace zone Land desertification Soil properties Genesis process |
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