混交改造杉木纯林对林下土壤肥力影响的研究进展  

Research progress on the effect of mixed plantation on the soil fertility in the forests between Cunninghamia lanceolata and other tree species

作　　者：严明明 高洪娣 刘美华[1] 伊力塔[1] YAN Mingming;GAO Hongdi;LIU Meihua;YI Lita(College of Forestry and Biotechnology,Zhejiang A&F University,Hangzhou 311300,China;Zhejiang Forest Resources Monitoring Center,Hangzhou 310020,China)

机构地区：[1]浙江农林大学林业与生物技术学院,杭州311300 [2]浙江省森林资源监测中心,杭州310020

出　　处：《生态科学》2024年第2期253-259,共7页Ecological Science

基　　金：国家自然科学基金项目项目(31971623)。

摘　　要：杉木是我国特有的重要人工用材树种。近年来,由于不可持续的造林措施,杉木人工林存在着土壤肥力退化、生产力下降等问题。混交林与纯林相比在林分稳定性、抗御病虫害、提高林地生产力以及发挥森林多种效益等方面有明显优势,营造混交林是解决目前杉木人工林生产力下降等问题的理想途径。对1985-2021年国内杉木混交林的研究成果进行归纳总结,讨论营造混交林对杉木林下土壤理化性质、养分循环、微生物、酶活性和生产力的影响,阐明混交可平衡土壤微生态、增加凋落物和土壤有机质含量,提高土壤肥力和生产力。可为改变杉木林树种单一、纯林化的现状,充分发挥杉木林生态效益提供理论依据。Chinese fir(Cunninghamia lanceolata)is one of the most important tree species for the timber use in China.In recent years,C.lanceolata plantations have faced to the severe soil fertility degradation and declining productivity due to unsustainable afforestation.Compared with monocultures,mixed plantations between Chinese fir and other tree species have obvious advantages in terms of stand stability,resistance to diseases and insect pests,improvement of forest productivity,and utilization of multiple benefits of forests.The establishment of mixed-species forests is an ideal way to solve the problems such as the decline of productivity in C.lanceolata plantations.We summarized the research results of mixed forests between C.lanceolata and other tree species from 1985 to 2021 in China,and analyzed the effects of mixed plantation on the soil physical and chemical properties,nutrient cycling,microorganisms,enzyme activities and productivity.It was found that mixed-species plantation could balance the soil micro-ecology and increase the content of soil organic matter,which improved soil fertility and productivity.These results can provide a theoretical basis for changing the current situation of monoculture and realizing the potential ecological benefits of Chinese fir forest.

关 键 词：杉木 混交林 土壤理化性质 养分循环 微生物 生产力 

分 类 号：S725.2[农业科学—林木遗传育种]