游秋明,焦四明,高俊,刘凯,王博,蔡凡隆
YOU Qiu-ming,JIAO Si-ming,GAO Jun,LIU Kai,WANG Bo,CAI Fan-long

• 1:四川省林业调查规划院

摘要(Abstract)：

采用空间序列代替时间序列的方法,研究了壤塘县对照地、露沙地、沙化耕地、固定沙地的土壤化学性质变化。结果发现:1)0~20 cm和20 cm~40 cm土层中,p H值均随沙化程度的加重逐步升高,而有机质、全N、水解N、全P含量则逐步降低;2)不同土层之间同种类型沙化土壤p H值差异不明显;除对照土壤水解N外,有机质、全N、水解N、全P含量均表现为0~20 cm土层等于(近似等于)或大于20 cm~40 cm土层的特点。3)各种沙化类型中,土壤上层和下层全K含量变化不大,速效K和有效P含量均表现出对照>沙化耕地>露沙地、固定沙地的特点。
The chemical properties changes of soil were studied listed as follows: control land,exposed sandy soil,sandy farmland and fixed sandy land in Rangtang County,by the way of spatial sequence instead of the time series. The results showed that: 1) Under 0 cm ~ 20 cm and 20 cm ~ 40 cm soil layer,the p H value increased with the increasing of desertification degree; organic matter,total N,the hydrolysis of N,and total P content gradually reduced; 2) Among the same sandy land type of different soil layer,the p H values were not significantly different. Except hydrolysis N of the control soil,organic matter,total N and hydrolysis N,total P content in 0 cm ~ 20 cm soil layer were equal to( approximately equal to) or greater than that in 20 cm ~ 40 cm soil. 3) In different types of sandy soil,no significant change of total K content in the upper and lower soli were found,available K and P content showed as: control land > sandy farmland > expose sandy soil and fixed sandy land.

关键词(KeyWords)： 川西北;沙化土地;土壤;化学性质
Northwest Sichuan;Sandy land;Soil;Chemical property

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 游秋明,焦四明,高俊,刘凯,王博,蔡凡隆
YOU Qiu-ming,JIAO Si-ming,GAO Jun,LIU Kai,WANG Bo,CAI Fan-long

DOI: 10.16779/j.cnki.1003-5508.2017.06.015

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