作　　者： ; ; ; ; ;

机构地区： 西南大学地理科学学院

出　　处： 《安徽农业科学》 2011年第1期163-165,共3页

摘　　要： 结合土壤磷素形态及含量变化与消落带坡地类型关系,探讨消落带不同坡地类型的磷素分布特征。结果表明:土+石质型坡地磷素形态变幅较大,有效性高的Ca2-P、Al-P、Ca8-P及易活性的Fe-P易在土体中累积,加强了对水体富营养化的威胁;陡/缓坡裸岩型坡地上覆土体缺乏,有效磷和水溶性磷含量均较低,变化幅度较小;稳定滩涂淤泥型坡地有效磷含量有上升趋势。 Combining relationship between the variation of soil phosphorus shape and content,and the types of water-level-fluctuating zone scope land,the distributional characteristics of phosphorus of different types of slope land in water-level-fluctuating zone were discussed. The results showed that the rangeability of phosphorus shapes in soil ＋ lithic slope land was larger;Ca2-P,Al-P and Ca8-P with high effectiveness and Fe-P with high activity were easy to accumulate in the soil,thereby,the threat of eutrophication was enhanced;there was lack of overlying soil in the slope land with steep/gentle slope bare rock,so the content of available phosphorus and water-soluble phosphorus was lower,rangeability was lower;the content of available phosphorus in the slope land with sludge presented the rising trend.

关 键 词： 消落带 坡地类型 无机磷形态 分布特征

领　　域： [农业科学] [农业科学]