田昆, 贝荣塔, 莫剑锋, 陆梅, 常凤来. 香格里拉大峡谷土壤资源现状分析[J]. 西南林业大学学报, 2003, 23(3): 8-12. DOI: 10.11929/j.issn.2095-1914.2003.03.003
引用本文: 田昆, 贝荣塔, 莫剑锋, 陆梅, 常凤来. 香格里拉大峡谷土壤资源现状分析[J]. 西南林业大学学报, 2003, 23(3): 8-12. DOI: 10.11929/j.issn.2095-1914.2003.03.003
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TIAN Kun, BEI Rong-ta, MO Jian-feng, LU Mei, CHANG Feng-lai. Study on Utilization Status of Soil Resources in Shangri-la Gorge,Southwest Yunnan[J]. Journal of Southwest Forestry University, 2003, 23(3): 8-12. DOI: 10.11929/j.issn.2095-1914.2003.03.003
Citation: TIAN Kun, BEI Rong-ta, MO Jian-feng, LU Mei, CHANG Feng-lai. Study on Utilization Status of Soil Resources in Shangri-la Gorge,Southwest Yunnan[J]. Journal of Southwest Forestry University, 2003, 23(3): 8-12. DOI: 10.11929/j.issn.2095-1914.2003.03.003
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香格里拉大峡谷土壤资源现状分析

Study on Utilization Status of Soil Resources in Shangri-la Gorge,Southwest Yunnan

    摘要
  • 摘要: 对云南西北部横断山系的香格里拉大峡谷土壤资源利用现状、土壤特性以及土壤利用格局改变对生态环境造成的影响进行了研究,结果表明:香格里拉大峡谷土壤类型多样,林下土壤土层深厚,粘粒含量高,养分丰富。土壤发育过程以高山寒冷环境下的有机质积累为主,有机炭含量较高,20cm以下的土壤深层仍高达7.3%。尽管气候寒冷使土壤利用性能受到限制,但开发为农业利用土壤后表层土壤有机质平均含量从12.1%降至2.9%,耕后的撂荒地下降了5倍,过牧超载、自然干扰如火灾也引起土壤养分下降。针对土壤退化状况和土壤生态环境的脆弱性,提出了香格里拉大峡谷土壤资源可持续利用的保护对策和措施。

     

    Abstract: The characteristics and utilization status of the soils,and the impacts of different utilization on ecosystem in Shangri-la Gorge were discussed.The results showed that there was a rich diversity of soil types in the gorge area with high clay and nutrient contents.The present soil formation in Shangri-la is mainly in organic matter accumulation process under cold alpine environment.The average content of organic matter is high and this index of the subsoil below 20 cm still reaches 7.3%.The average content of organic matter in surface soil dropped to 2.9% from 12.1% after cropping though the utilization of the land is limited by the cold climate in the gorge area.The same index of abandoned cropland dropped to about 20% of the contrast.Overgrazing,natural disturbance such as forest fire also caused reduction of nutrient content of the soil.Some protective measures and related tactics for sustainable utilization of the soil fertility in Shangri-la Gorge area are put forward based on understanding of the soil degradation and the ecological fragility of the soil.

     

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