嘉陵江上游低山暴雨区不同植被类型土壤磷素的比较  

Comparison of Soil Organic Matter and Phosphorus of Different Vegetation Rehabilitation in Northern Sichuan

作　　者：程永珍[1] 宫渊波[1] 陈林武[2] 李进峰[1] 张发会[2] 

机构地区：[1]四川农业大学、四川省生态林业工程省级重点实验室,四川雅安625014 [2]四川林业科学研究院,成都610081

出　　处：《水土保持研究》2007年第6期208-211,共4页Research of Soil and Water Conservation

基　　金：国家“十五”重点科技攻关计划“四川盆周低山区水土流失综合治理技术与示范”子课题(2001BA606A-06-3);四川省重点学科森林培育学建设项目

摘　　要：以广元市水土流失定位观测站内的3个不同植被恢复模式为研究对象,通过野外调查与室内实验分析,测定了湿地松纯林,刺槐纯林及湿地松刺槐混交林的土壤有机质与P素含量。结果表明：（1）混交林的土壤结构明显好于湿地松与刺槐纯林;（2）混交林中有机质含量高于刺槐与湿地松纯林,3个林地的土壤有机质多集中在土壤上层,并随着土壤深度的增加而减少。The physical and chemical properties,soil orgnic matter and phosphorus in three patterns of vegetation rehabilitation were studied. Tested through in the open country investigation and the room-analyzes, has determined organic matter of soil in Pinus ,liottii Engelm, Robinia pseudoacacia and mixed stands of Pinus elliottii and Robinia pseudoacacia. The result indicated that soil structure of in Pinus eliottii Engelm is obvious good. The organic matter cotent of the mixed forest is higher than the Pinus eliottii Engelm and Robinia pseudoacacia in three different patterns ; The soil total phosphorus and available phosphorus are sorted descendingly as follow.. Robinia pseudoacacia 〉 mixed stands of Pinus elliottii and Robinia pseudoacacia 〉 Pinus elliottii.

关 键 词：森林土壤 有机质 磷 

分 类 号：X173[环境科学与工程—环境科学] S157.1[农业科学—土壤学]