不同退化阶段伊犁绢蒿荒漠草地土壤养分动态  

Soil nutrient changes of Seriphidium transillense desert grassland under different degraded degrees

作　　者：王彩虹[1] 朱进忠[1] 范燕敏[1] 武红旗[2] 刘洪来[1] 

机构地区：[1]新疆农业大学草业工程学院新疆草地资源与生态重点实验室,新疆乌鲁木齐830052 [2]新疆农业大学资源与环境学院,新疆乌鲁木齐830052

出　　处：《草业科学》2008年第2期16-20,共5页Pratacultural Science

基　　金：新疆维吾尔自治区重点实验室新疆草地资源与生态实验室开放课题(XJDX0209-2004-03)

摘　　要：通过对阿什里乡伊犁绢蒿Seriphidium transillense荒漠草地在未退化、中度退化、重度退化、极度退化下不同层次的土壤养分的分析，结果表明：1）不同退化阶段下，有机质含量极度退化明显高于未退化、中度退化和重度退化，未退化、中度退化和重度退化之间有机质的差异不明显；全氮含量随着退化加剧也是升高的；全磷和全钾在不同退化阶段变化不明显。2）在剖面上，随着土层的加深土壤有机质、全氮、全磷、全钾均减少；在0～10、10～20、20-30cm土层中，变化比较明显的是0～10cm。Soil nutrient content of Seriphidium transillense desert grassland under different stages, including non-degradation （ND）, mid-degradation （MD）, heavy-degradation （HD） degradation （OD） in Ashili Village were measured. The result showed that 1） the soil or content in OD was higher than ND, MD and HD, and the difference among ND, MD and degraded and overgani HD c matter was not significant. The nitrogen content increased along with the degradation degree, but no significant variation was found in total phosphorous and potassium contents. 2） The contents of the organic matter, total nitrogen, total phosphorous and total potassium reduced along with the soil depth, and the variation within 0 to 10 cm was more remarkable than that within 10 to 20 cm and 20 to 30 cm.

关 键 词：伊犁绢蒿荒漠草地 土壤养分 不同退化阶段 

分 类 号：S812[农业科学—草业科学]