文献类型：期刊文献

中文题名：间伐对杉木人工林土壤酶和活性有机碳的短期影响

英文题名：Short-term Effects of Thinning on Soil Enzyme and Soil Labile Organic Carbon in Cunninghamia lanceolata Plantation

作者：成向荣[1] 袁健军[2] 刘佳[1] 舒骏[1] 虞木奎[1]

第一作者：成向荣

机构：[1]中国林业科学研究院亚热带林业研究所;[2]浙江诚川建设有限公司

年份：2014

卷号：30

期号：4

起止页码：17-22

中文期刊名：中国农学通报

外文期刊名：Chinese Agricultural Science Bulletin

收录：CSTPCD;;CSCD:【CSCD_E2013_2014】；

基金：国家自然科学基金"间伐对杉木人工林土壤有机碳组分及周转的影响"(31300519);浙江省自然科学基金"抚育间伐对杉木人工林土壤有机碳库构成的影响"(LY12C16007);中央级公益性科研院所基本科研业务费专项资金"抚育间伐对杉木人工林土壤活性有机碳组分的影响"(RISF61257)

语种：中文

中文关键词：杉木;间伐;土壤酶;活性有机碳;碳库管理指数

外文关键词：Cunningbamia lanceolata; thinning; soil enzyme; soil labile organic carbon; soil carbon management index

分类号：S7

摘要：为了明确杉木人工林间伐后短期内土壤酶和活性有机碳的变化，在浙江开化开展了3种间伐强度（对照、中度和强度）下2年后土壤酶活性、活性有机碳含量以及碳库管理指数变化的研究。结果表明：相对于未间伐林地，间伐处理增加了0-20cm土壤过氧化氢酶、脲酶、磷酸酶和转化酶活性，其中中度间伐仅增加了表层（0～10cm）土壤酶活性，而强度间伐处理可以显著增加0-20cm土壤酶活性。间伐处理增加了0～20cm土层土壤活性有机碳含量，土壤非活性有机碳含量没有显著变化。0～10cm土层土壤碳库活度、碳库活度指数、碳库指数和碳库管理指数均随间伐强度增加而增大，10-20cm土层强度间伐处理碳库管理指数显著高于对照。20cm以下土层土壤酶、活性有机碳及碳库管理指数在不同间伐处理之间均无显著差异。这4种土壤酶与活性有机碳和碳库管理指数呈显著正相关。这些试验结果说明杉木人工林间伐2年后，增加了浅层土壤酶活性和活性有机碳含量，将促进土壤碳释放。
In order to determine the change of soil enzyme activities and soil labile organic carbon contents in Cunninghamia lanceolata plantation after thinning in a short time. Soil enzyme activity, soil labile organic carbon and soil carbon management index were studied in 3 thinning intensities （unthinning, moderate and heavy thinning） in C. lanceolata plantation in Kaihua County, Zhejiang Province. After 2 years thinning treatment, the activities of soil catalase, urease, phosphatase and invertase in 0-20 cm soil layers increased in the thinned treatments compared with unthinned treatment. The activities of these soil enzymes increased only in 0-10 cm soil layer in moderate thinning treatment, and which significantly increased in the 0-20 cm soil layers in heavy thinning treatment. Soil labile organic carbon contents in 0-20 cm soil layer increased in the thinned treatments, no significant differences were detected in soil profile for soil stable organic carbon contents. Soil carbon activity, carbon activity index, carbon index and carbon management index in 0-10 cm soil layer increased with increasing thinning intensity, soil carbon management index significantly increased in 10-20 cm soil layer in heavy thinning treatment compared with control. There were no significant differences among the three thinning treatments in soil enzyme activities, soil labile organic carbon contents or soil carbonmanagement index below 20 cm soil layer. Four soil enzymes presented a significant and positive correlation with soil labile organic carbon, and soil carbon management index. These results indicated that： soil enzyme activities and soil labile organic carbon contents in shallow soil layer were enhanced in C. laneeolata plantation after 2 years thinning treatment, which would lead to a release of stored soil carbon.