摘要
通过对青海省沙珠玉治沙站人工植被恢复不同土壤发育阶段土壤理化性状的研究,结果表明,人工植被恢复对荒漠化土壤具有很好的改善作用,随着流动沙丘被固定,机械组成中砂粒逐渐降低,粘粒和粉粒逐渐含量逐渐提高,土壤有机质和养分含量及CEC逐渐提高,土壤pH值变化不大,碳酸钙只是在表层升高。已经发生荒漠化的地区恢复到正常土壤需要的时间相当长,因此人们应减少人为因素对荒漠化的影响。
In this study, soil physical and chemical characteristics in different develop stage after artificial vegetation restoration have been researched in Shazhuyu desert control site. The result showed that, artificial vegetation restoration have better impact to sandificational soil. With the sand dunes have been fixed, the content of sands reduced gradually, but silt and clay rose; soil organic matter, nutrient and CEC gradually rose; soil pH value had no larger change; calcium carbonate content only rose on top layer. It need a long time for sandificational land evolve into natural soil, so people should deduce artificial influence to sandificational land.
出处
《中国农学通报》
CSCD
2005年第8期404-408,共5页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金"农牧交错带土地荒漠化形成机制与监测技术研究"(30170790)
教育部科技重点项目"农牧交错带土地荒漠化评价及其预警系统研究"(03157)
