土壤2011，Vol.43Issue(3)：411-417,7.
绿洲农田土壤粒径分布特征及其影响因素分析——以策勒绿洲为例
Characterizing Soil Particle-size Distribution and Its Variation in Farmland of Oasis——A Case Study of Cele Oasis
摘要
Abstract
In this paper, the Cele oasis, which located at the southern margin of Tarim Basin, was selected as a study area in order to analyze the farmlandsoil particle size distribution (PSD) and its variation characteristics, and then to identify the main factors that influence soil PSD. Based on soil samples collected from farmlands of whole oasis in September 2008 and the PSD data obtained by laser diffraction technique, the volume fractal dimension (D) values of soil PSD were determined. The results of D value indicated that there was significant difference in PSD between farmlands, and the hypothesis that the location and utilization year of farmlands are the main reasons that result in variation of PSD was established. The ordination methods were used to quantitatively analyze the contribution rate of each factor. Our results indicated the utilization year is the dominated factor, its relative contribution is 67%. These results indicated that long-term and effective tillage management for farmlands will be beneficial to keep and improve states of soil PSD.关键词
土壤粒径分布/分形维数/排序/绿洲/农田/策勒Key words
Soil particle size distribution, Fractal dimension, Ordination, Oasis, Farmland, Cele分类
农业科技引用本文复制引用
桂东伟,雷加强,曾凡江,穆桂金,杨发相,苏永亮,潘燕芳..绿洲农田土壤粒径分布特征及其影响因素分析——以策勒绿洲为例[J].土壤,2011,43(3):411-417,7.基金项目
国家自然科学基金项目(41001171)和国家重点基础研究发展计划项目(2009CB421302)资助。 （41001171）
