福建农业科技2023，Vol.54Issue(8)：10-16,7.DOI:10.13651/j.cnki.fjnykj.2023.08.002
杉木人工纯林与4树种混交林土壤养分及酶活性差异分析
Analysis of Differences in Soil Nutrients and Enzyme Activities Between the Pure Artificial Plantation Forest of Chinese fir and the Mixed Forests of Four Tree Species
摘要
Abstract
The effects of different mixed afforestation of Chinese fir on the content of nutrient in soil surface and soil enzyme activity were discussed,which could provide theoretical basis for the scientific management of the pure artifi-cial plantation forest of Chinese fir.In this study,the mixed forests of four tree species,including Cunninghamia lanceolata+Castanopsis hystrix+Cryptomeria japonica+Castanopsis carlesii(the mixed forest 1),Cunninghamia lanceolata+Castanopsis hystrix+Fokienia hodginsii+Taxus wallichiana(the mixed forest 2),Cunninghamia lan-ceolata+Pinus massoniana+Mytilaria laosensis+Taxus wallichiana(the mixed forest 3),and the pure artificial plantation forest of Chinese fir were used as the research objects to analyze the differences of soil nutrients and soil en-zyme activities in different stands and the relationship between them.The results showed that:Compared with the pure Chinese fir plantation forest,the soil dissolved organic nitrogen(DON)in the mixed forest was higher,and the soil microbial biomass carbon(MBC)in the mixed forest 1 and the mixed forest 3 was 37.82％and 1.84％higher than that in the pure Chinese fir plantation forest,respectively.The soil DOC∶DON in the mixed forest was signifi-cantly lower than that in the pure Chinese fir plantation forest(P＜0.05),while the soil MBC∶MBN in the mixed forest was significantly higher than that in the pure Chinese fir plantation forest(P＜0.05).The acid phosphatase(AP)activity in the mixed forest was significantly higher than that in the pure Chinese fir plantation forest(P＜0.05).The correlation analysis showed that the soil total carbon(TC),total nitrogen(TN)(P＜0.01)and DON(P＜0.05)were significantly positively correlated with the soil β-glucosidase(BG)activity and acid phosphatase(AP)activity.The research showed that:compared with the pure Chinese fir plantation forest,although the affor-estation model of the mixed forest of Chinese fir could better improve the soil organic nitrogen content,microbial car-bon content and soil microbial biomass carbon-nitrogen ratio during the young forest period,and then affect the soil enzyme activity,which was more conducive to improving the soil quality of the pure Chinese fir plantation forest.关键词
杉木/混交林/土壤养分/土壤酶活性Key words
Cunninghamia lanceolata/Mixed forest/Soil nutrient/Soil enzyme activity分类
农业科技引用本文复制引用
崔莹莹,何露露,叶浩然,冯莉绚,王思荣..杉木人工纯林与4树种混交林土壤养分及酶活性差异分析[J].福建农业科技,2023,54(8):10-16,7.基金项目
福建省自然科学基金项目重点项目(2022J02025). （2022J02025）
