文献类型：期刊文献

中文题名：湘西北小流域植被恢复区土壤酶活性及养分相关性

英文题名：Soil Enzyme Activities and Their Path Analysis with Soil Nutrient Properties Under Different Vegetation Restoration Patterns in Small Watershed,Northwest Hunan

作者：漆良华[1] 张旭东[2] 彭镇华[2]

第一作者：漆良华

机构：[1]国际竹藤网络中心;[2]中国林业科学研究院林业研究所

年份：2011

卷号：39

期号：3

起止页码：83-88

中文期刊名：东北林业大学学报

外文期刊名：Journal of Northeast Forestry University

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家"十一五"林业科技支撑项目(2006BAD03A16)

语种：中文

中文关键词：植被恢复模式;土壤酶活性;综合指数;通径分析;湘西北

外文关键词：Vegetation restoration patterns; Soil enzyme activities; Synthetical indexes; Path analysis; Northwest Hunan

分类号：S714

摘要：研究了湘西北女儿寨小流域马尾松天然林、杉木人工林、杜仲人工林、油桐人工林、润楠次生林、毛竹杉木混交林及荒草灌丛7种典型植被恢复模式下的土壤酶活性、综合指数及土壤酶活性与土壤养分的通径相关关系。结果表明:不同植被恢复模式土壤脲酶、蔗糖酶、脱氢酶、过氧化氢酶、多酚氧化酶、蛋白酶、磷酸酶活性的变化范围分别为0.15～0.59 mg·g-10、.36～3.76 mg·g-1、4.02～11.76 mg·g-1、0.03～0.06mL.g-10、.50～1.26mg·g-10、.09～0.50mg·g-1和15.67～35.50mg·g-1,且土壤酶活性均表现为00.1);水解氮对土壤脲酶,水解氮、全氮对土壤蔗糖酶,pH值对土壤脱氢酶,以及有机质对土壤过氧化氢酶的直接通径系数、决定系数及对R2的贡献较大,存在较显著地影响。
A survey was conducted to study soil enzyme activities,synthetical index and their path analysis with soil nutrient properties for seven typical vegetation restoration patterns,which was comprised of P.massoniana natural forest（Ⅰ）,Cunninghamia lanceolata plantation（Ⅱ）,Eucommia ulmoides plantation（Ⅲ）,Vernicia fordii plantation（Ⅳ）,Machilus pingii secondary forest（Ⅴ）,Phyllostachys edulis-C.lanceolata mixed forest（Ⅵ）,wasteland-shrub（Ⅶ）.Results showed that the activities of urease,sucrase,dehydrogenase,catalase,polyphenol oxidase,proteinase and phosphatase ranged from 0.15-0.59mg·g^-1,0.36-3.76mg·g^-1,4.02-11.76mg·g^-1,0.03-0.06mL·g^-1,0.50-1.26mg·g^-1,0.09-0.50mg·g^-1 and 15.67-35.50mg·g^-1 for different vegetation patterns.Moreover,activities of these enzymes in the 0-20cm soil layer were higher than those in the 20-40cm soil layer.The synthetical index of soil enzyme activities of C.lanceolata plantation was the highest（8.3417）,followed by wasteland-shrub（6.4454） and C.lanceolata plantation（6.3393）.Soil nutrient properties could explain 80.42 percent,79.56 percent,80.69 percent and 84.26 percent of variance of the enzyme activities of urease,sucrase,dehydrogenase and catalase,with residual path coefficients of 0.4425,0.4521,0.4394 and 0.3967,respectively.However,there were unobvious linear relations between polyphenol oxidase,proteinase,phosphatase and soil nutrient properties（p0.1）.The direct effects of hydrolyzable nitrogen on urease activity and hydrolyzable nitrogen,total nitrogen on sucrase activity,pH on dehydrogenase activity,and organic matter on catalase activity all exhibited higher path coefficient,coefficient of determination,and contribution to R-square.