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当前位置: 首页 > 文章 > 间伐对华南地区相思人工林土壤理化性质、微生物及酶活性的影响 中南林业科技大学学报 2018 (2) 23-29+42
Position: Home > Articles > Impact of thinning on physical and chemical characteristics, soil microorganism and soil enzyme activities on season of Acacia mangiumin in South China Journal of Central South University of Forestry & Technology 2018 (2) 23-29+42

间伐对华南地区相思人工林土壤理化性质、微生物及酶活性的影响

作  者：
刘颂颂;陈葵仙;沈德才;张浩;苏纯兰;卢琳超
单  位：
东莞市林业科学研究所;香港高等科技教育学院
关键词：
间伐;土壤理化性质;土壤微生物;土壤酶活性;马占相思人工林
摘  要：
以东莞大岭山马占相思林3种间伐改造模式(未间伐+套种、间伐30%+套种和间伐60%+套种)及未间伐林分为对照林分的土壤为研究对象,改造11 a后,比较研究这4种改造模式在旱季和雨季下土壤的理化性质、土壤微生物和土壤酶活性的影响。结果表明,(1)不同间伐模式在旱季和雨季下林分的土壤理化性质之间存在差异,旱季时土壤全N和硝态氮含量较低,其它土壤养分含量较高,雨季时土壤全N和硝态氮含量较高,其它土壤养分消耗较高,其含量较低。(2)间伐促进林分土壤微生物生物量的积累,且旱季显著高于雨季。(3)改造后林分植被覆盖提高了土壤酶活性,旱季土壤磷酸酶和脲酶活性显著高于雨季。(4)PCA分析结果表明,无论是旱季,还是雨季,土壤理化性质、微生物和酶活性因子之间相关性显著;且各指标空间分布格局差异及不同改造模式林分对土壤因子响应不同。以未间伐与套种改造模式能有效改善马占相思纯林的土壤理化性质,同时提高土壤微生物生物量和土壤酶活性。
译  名：
Impact of thinning on physical and chemical characteristics, soil microorganism and soil enzyme activities on season of Acacia mangiumin in South China
作  者：
LIU Songsong;CHEN Kuixian;CHEN Decai;ZHANG Hao;SU Chunlan;LU Linchao;Forest Research Institute of Dongguan;Technological and Higher Education Institute of Hong Kong;
关键词：
thinning;;physical and chemical characteristics;;soil microorganism;;soil enzyme activities;;Acacia mangiumin plantation
摘  要：
Three modes of thinning transformation(un-thinning +interplanted, 30% thinning+ interplanted, 60% thinning + interplanted) and one control stand of Acacia mangiumin plantations in the Dongguan Forest Research Park, Guangdong Province of South China were taken as the objects to study the soil characteristics. This paper was studied the effects of thinning on physical and chemical characteristics, soil microorganism and soil enzyme activities in winter and summer after thinning 11 years. The results showed that:(1) There was significant difference in the soil physical and chemical characteristics of thinning treatments between the dry and wet seasons. In the dry season, the total N and NO_3-N content were lower, other contents were higher. Nevertheles, in the wet season, the total N and NO_3-N content were higher and other contents had consumption high.(2) Thinning increased soil microbial biomass, and the soil microbial biomass in the day season was higher than that of wet season.(3) Thinning also improved the forest coverage and increased the soil enzyme activity. The soil phosphatase and urease activities in the dry season were higher than those in wet season.(4) PCA showed that there was significant correlation between the soil physical and chemical properties, microbial biomass and enzyme activity in both dry and wet season. The responsive of the spatial distribution and soil index were different. Interplanted native species in the plantation without thinning could effective improvement the soil fertility, meanwhile, enhanced the soil microbial biomass and soil enzyme activities.

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