高寒草甸植被土壤腐殖质组成及性质的研究  

Study on Composition and Characteristics of Soil Humus under Alpine-arctic Meadow Vegetation

作　　者：刘育红[1] 裴海昆[2] 

机构地区：[1]浙江大学环境与资源学院,浙江杭州310029 [2]青海大学农牧学院草业科学系,青海西宁810003

出　　处：《土壤通报》2004年第5期562-565,共4页Chinese Journal of Soil Science

基　　金：国家自然科学基金项目(39760023);青海省专家基金资助项目(97-J-80)

摘　　要：不同草甸植被下土壤有机质含量变化在70.0～122.8gkg-1之间,同时,腐殖质特性亦存在较大差异。采用熊田法研究表明,可提取腐殖质中胡敏酸所占比率为47.99%～56.98%,游离胡敏酸(fHA)比率为51.67%～60.10%,游离富里酸(fFA)比率为80.01%～86.46%;此外,不同草甸植被下土壤腐殖质的相对色度(RF),E4也有明显差异。Soil organic matter content and humus properties were different under different meadow vegetations. The total organic matter content varied from 70.0 to 122.8g/kg. According to Tsutsukis method, the ratio of HA/HA was from 51.67% to 60.10%, the radio of FA/FA was from 80.01%to 86.46%, and the HA was from 47.99% to 56.98% of the total extractable humus. The RF as well as E_4 of the humus was also significantly different under different meadow vegetations.

关 键 词：高寒草甸 土壤 腐殖质 性质 

分 类 号：S153.622[农业科学—土壤学]