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当前位置: 首页 > 文章 > 黄河三角洲退化刺槐林不同改造方式对土壤酶活性及理化性质的影响 水土保持通报 2012,32 (5) 171-175+181
Position: Home > Articles > Effects of Different Improving Patterns for Degraded Robinia Pseucdoacacia Plantation on Soil Enzyme Activity and Physicochemical Properties in Yellow River Delta Bulletin of Soil and Water Conservation 2012,32 (5) 171-175+181

黄河三角洲退化刺槐林不同改造方式对土壤酶活性及理化性质的影响

作  者：
夏江宝;许景伟;李传荣;王月海;刘京涛
单  位：
滨州学院山东省黄河三角洲生态环境重点实验室;山东农业大学林学院;山东省林业科学研究院
关键词：
黄河三角洲;刺槐林;改造方式;酶活性;土壤理化性状
摘  要：
采用野外典型抽样调查和室内分析测定相结合的方法,选取黄河三角洲重度退化刺槐林的4种改造方式,即棉田、白蜡林、白蜡+刺槐(混交林)、白蜡+棉花(农林间作),以未改造的重度退化刺槐林地作为对照,对改造5a后的土壤酶活性、土壤容重、孔隙度、盐碱状况及养分含量进行了测定分析。结果表明:(1)4种改造方式都不同程度地增加了土壤磷酸酶、脲酶活性,降低了多酚氧化酶活性。过氧化物酶虽有增加趋势,但差异不显著。多酚氧化酶和脲酶活性排序均为:混交林>白蜡林>农林间作>棉田;混交林、农林间作、白蜡林、棉田改造方式下的磷酸酶活性分别是对照的3.5,3.2,1.7,1.6倍。(2)改造林地的土壤容重、含盐量均表现降低趋势,其均值大小均表现为:混交林<农林间作<白蜡林<棉田,分别比对照下降14.5%,12.3%,9.0%,7.7%和35.3%,27.9%,13.2%,7.4%;总孔隙度表现为增大趋势,棉田、白蜡林改造方式表现出一定的增碱负效应。(3)改造后土壤养分增加显著,土壤有机质及有效N,P,K总体表现为混交林改造方式下最高,农林间作高于白蜡林,棉田波动较大。混交林和农林间作改造方式对土壤酶活性及理化性质的总体改善效果较好,建议作为重度退化刺槐林的主要改造方式进行推广。
译  名：
Effects of Different Improving Patterns for Degraded Robinia Pseucdoacacia Plantation on Soil Enzyme Activity and Physicochemical Properties in Yellow River Delta
作  者：
XIA Jiang-bao1,XU Jing-wei2,LI Chuan-rong3,WANG Yue-hai2,LIU Jing-tao1(1.Shandong Provincial Key Laboratory of Eco-environmental Science for the Yellow River Delta, Binzhou University,Binzhou,Shandong 256603,China;2.Shandong Research Institute of Forestry,Ji′nan, Shandong 250014,China;3.College of Forestry,Shandong Agriculture University,Taian,Shandong 271018,China)
关键词：
Yellow River Delta;Robinia pseucdoacacia plantation;improving pattern;soil enzyme activity;soil physicochemical property
摘  要：
In order to understand the effects of different improving patterns for badly degraded Robinia pseucdoacacia plantation in the Yellow River Delta area,soil enzyme activity,soil density,porosity,saline-alkali content and soil nutrients under the plantation improved for five years were determined.Four improving measures,including cotton field,pure forest of Fraxinus chinensis,agro-forestry of F.chinensis + cotton and mixed forest of F.chinensis + R.pseucdoacacia,were selected,with the badly degraded R.pseucdoacacia plantation serving as the control(CK).Results are as follows:(1) The improving patterns clearly affected soil phosphatase,urease and polyphenol oxidase,but not soil peroxidase.Soil phosphatase and urease activity increased,but soil polyphenol oxidase decreased.The activities of polyphenol oxidase and urease showed such an order of mixed forest>pure forest>agro-forestry>cotton field.Phosphatase activities in mixed forest,agro-forestry,pure forest and cotton field were 3.5,3.2,1.7 and 1.6 times of that of CK,respectively.(2) Soil density and soil salt content decreased after adopting the four improving patterns,and these indexes were in the order of mixed forest < agro-forestry < pure forest < cotton field.Compared with CK,soil density decreased by 14.5%,12.3%,9.0% and 7.7%;and soil salt content decreased by 35.3%,27.9%,13.2% and 7.4%,respectively.However,soil total porosity increased.(3) Soil nutrient content,such as soil organic matter,available N,P and K increased after adopting the four improving measures.These indexes were the highest in mixed forest,those in agro-forestry were higher than pure forest,and the data for cotton field were unstable.Soil enzyme activities and physicochemical properties for mixed forest and agro-forestry were better than pure forest and cotton filed.Accordingly,we propose that mixed forest and agro-forestry should be fostered and managed firstly in the future.

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