黄河三角洲退化人工刺槐林地土壤特征  

Soil properties of degraded Robinia pseudoacacia plantation in Yellow River Delta

作　　者：马风云[1,2] 白世红[1,2] 侯本栋 刘艳[1,2] 侯龙鱼[1,2] 

机构地区：[1]山东农业大学林学院 [2]山东农业大学生态与环境实验室,山东泰安271018 [3]淄川林业局,山东淄博255100

出　　处：《中国水土保持科学》2010年第2期74-79,共6页Science of Soil and Water Conservation

基　　金：国家自然科学基金项目"黄河三角洲天然湿地生态系统稳定性研究"(30970499)

摘　　要：黄河三角洲大面积人工刺槐林出现了衰退现象,表现为树木梢头出现不同程度的枯稍。为了揭示该地区刺槐林衰退的原因,对不同退化程度刺槐林的土壤特征进行研究。结果表明:随着刺槐林退化程度的增加,土壤密度(全层)逐渐增大,土壤多项养分指标有不同程度的下降趋势,土壤含盐量随退化程度的加重逐渐增大;在不同退化程度的刺槐林分中,基本趋势是随着退化程度的加重,脲酶、多酚氧化酶、过氧化氢酶和过氧化物酶的活性呈现降低的趋势;不同退化程度刺槐林的土壤中微生物总量随退化程度的加重而减少。The degradation of Robinia pseudoacacia plantation on Yellow River Delta took place in large area and the shoots of R. pseudoacacia trees were dried-up with different degree. In order to reveal the degradation causes of R. pseudoacacia plantation, soil characteristics of R. pseudoacacia plantation were studied. The results showed that soil density increased gradually with the increasing of the degradation degree of R. pseudoacacia plantation. With increasing of degradation degree of R. pseudoacacia plantation, many indices of soil nutrition were shown by decreasing degree. The contents of salt in soil increased gradually with the degradation degree increasing. It was shown that with degradation degree increasing of the R. pseudoacacia plantation the activities of soil enzymes such as peroxidase, catalase, polyphenol oxidase, urease decreased gradually. The number of total microorganism in soil of the R. pseudoacacia plantation decreased with aggravation of degradation.

关 键 词：人工刺槐林 退化 土壤特征 黄河三角洲 

分 类 号：S812.3[农业科学—草业科学]