聚丙烯酰胺与苔藓对幼龄锥栗园土壤侵蚀的影响  

Effects of polyacrylamide and moss on soil erosion in young forest of Castanea henryi

作　　者：魏萧萧[1] 兰思仁[1,2] 黄炎和[2,3] 张鸿[4] 高清贵[4] 林金石[2,3] 

机构地区：[1]福建农林大学林学院,福建福州350002 [2]南方水土保持研究院,福建福州350002 [3]福建农林大学资源与环境学院,福建福州350002 [4]建瓯市水土保持办公室,福建建瓯353100

出　　处：《森林与环境学报》2015年第2期97-102,共6页Journal of Forest and Environment

基　　金：国家科技支撑项目"福建红壤区生态修复和持续经营关键技术集成与示范"(2014BAD15B00)

摘　　要：采用聚丙烯酰胺(PAM)和苔藓为材料,利用径流小区试验,观测其对幼林锥栗园土壤侵蚀的影响,分析其在3种雨型下径流量与入渗量、含沙量与产沙量以及侵蚀泥沙机械组成的变化。结果表明,3种雨型顺坡和梯田的径流量关系为对照>PAM与苔藓混合处理>PAM处理>苔藓处理,入渗量为苔藓处理的小区最大;PAM处理的产沙量最少,顺坡长历时降雨条件下苔藓处理降低含沙量的效果更加明显;梅雨产沙主要以粘粒和粉粒为主,雷阵雨和台风雨产沙沙粒比例明显增加,PAM与苔藓混合处理阻止园大颗粒土壤的流失最为有效。Polyacrylamide and moss were applied to a runoff plot experiment to observe their effects on the soil erosion in young forest of Castanea henryi, and the change of runoff and infiltration capacity, sediment production and sediment rate, and runoff and sediment mechanical composition was analyzed under shower, mould rains and typhoon rain. In slope and terrace, runoff was CK 〉 treatment with polyacrylamide and moss 〉 polyacrylamide treatment 〉 moss treatment under three sorts of rain. Infiltration capacity was the highest in the moss treated plot, sediment production was the least in the polyacrylamide treated plot, and remarkable decreasing of sediment rate was seen in the moss treated slope under long rain. The main runoff and sediment mechanical composition was clay and silt under mould rains, and the percentage of sand obviously increased in shower and typhoon rain. Polyaerylamide and moss mixed treatment was the best way to prevent the loss of coarse particle in soil.

关 键 词：聚丙烯酰胺 苔藓 土壤侵蚀 锥栗园 

分 类 号：S157.9[农业科学—土壤学]