摘要
在干湿不同季节分析滇中高原不同恢复措施下群落的土壤肥力条件和土壤水分条件,结果表明,无论干湿季节,土壤养分含量在不同类型的植被中由优到劣依次为次生常绿阔叶林、针阔混交林、云南松林、桉树林、荒坡灌草丛;各种植被对0～30cm的剖面层次的土壤肥力影响最大,自然恢复更新的植物群落对0～30cm土层的肥力影响显著优于人工林,其变化幅度也高于人工林;自然恢复更新的植物群落在30～60cm、60～90cm土层中,营养物质含量较低,尤其在雨季这些深层土壤营养物质的含量更小。次生常绿阔叶林的持水能力最强,桉树林的持水保水能力最低。次生常绿阔叶林和针阔混交林土壤养分和水分在干湿季节间变化幅度较小,而桉树林和云南松林变化幅度较大。讨论认为雨季补充营养可以显著提高植被恢复的速度,生态建设中尽可能以自然演替恢复更新为主。
The soil fertility and soil water of different restoration vegetation on central Yunnan Plateau in the dry and rainy season were studied.Results were as follows.(1)Whether dry season or rainy season,the soil nutrition of different vegetations were semi-humid evergreen broad-leaved forest>theropencedrymion>needle-leaved forest>culture community of Eucalyptus robusta>abandoned wooden land;(2)vegetation had great influence on the fertility of 0～30 cm soil profile,and the natural restored plant communities were better than the artificial communities;(3)the natural restored plant communities had less nutrition,especially in the rainy season;(4)the semi-humid evergreen broad-leaved forest had the greatest retentive water capability,and the culture community of Eucalyptus robusta had the lest water capability;(5)the soil nutrient and soil water at dry and rainy season of semi-humid evergreen broad-leaved forest and theropencedrymion had less variation,but the needle-leaved forest and the culture community of Eucalyptus robusta had greater variation.It was suggested that to supply proper nutrition can accelerate vegetation restoration and natural restoration should be the main measure in the ecological construction.
出处
《水土保持研究》
CSCD
北大核心
2005年第1期49-53,共5页
Research of Soil and Water Conservation
基金
国家基础科学研究重大计划(2003CB145103-04)
国家攀登计划特别支持项目(2000-026)
云南自然科学基金重点项目(2000C0001P)
关键词
滇中高原
植物群落
土壤肥力与水分
生态修复
central Yunnan plateau
plant community
soil fertility and water
ecological rehabilitation
