农业资源与环境学报2025，Vol.42Issue(6)：1658-1667,10.DOI:10.13254/j.jare.2024.0800
吕梁山区红枣林生态转型模式对土壤微生物功能多样性的影响
Effects of ecological transition model of jujube forest on soil microbial functional diversity in Lvliang Mountain area
摘要
Abstract
By studying the functional diversity of soil microorganisms under different ecological transition modes of red jujube economic forests in Lvliang Mountainous area,we can provide theoretical basis and practical reference for the sustainable development of ecological transition of red jujube economic forests.In this study,Biolog-Eco microtiter plate technology was used to select four typical ecological transition modes:replanting of red date palm forest with Chinese pine(CP),replanting of cypress(PO),replanting of alfalfa(AL),and replanting of medicinal herbs(MM),and to analyze the carbon metabolism of soil microorganisms as well as the characteristics of diversity indexes under different ecological transition modes with the natural abandonment of red date palm forests(CK)as the object of the study.The results showed that CP,PO,MM and AL significantly increased the carbon source metabolic activity of soil microorganisms compared with CK,with CP treatment being the highest.The strongest utilization of sugars,alcohols,amines and carboxylic acids was PO,the strongest utilization of amino acids and esters was CP,and CK was the weakest utilization of all six types of carbon sources.Different ecological transition model soils significantly(P<0.05)increased the ability of microorganisms to utilize six types of carbon sources cypress.Simpson's index(0.94),McIntosh's index(4.99)and carbon source utilization richness index(19.01)were highest for soil microorganisms for the CP treatment and Shannon's index(2.91)was highest for the PO treatment.Correlation analysis and partial least squares path modeling showed that soil microbial functional diversity was significantly negatively correlated(P<0.05)with soil pH and positively correlated(P<0.05)with soil organic carbon,microbial mass carbon,and total phosphorus content.Organic matter inputs affected soil SOC and TN content,which in turn affected the ability of soil microorganisms to utilize carbon sources and functional diversity indices in different ecological transition modes.The replanting of different vegetation in jujube groves improve the carbon source metabolism and diversity indices of soil microorganisms,in which the replanting of Chinese pine and cypress models is better than the replanting of alfalfa and medicinal herbs.关键词
红枣林/生态转型/微生物碳源利用/多样性指数Key words
jujube forest/ecological transformation/microbial carbon source utilization/diversity index分类
农业科学引用本文复制引用
沐春恒,李嘉琦,黄富超,殷海善,王改玲..吕梁山区红枣林生态转型模式对土壤微生物功能多样性的影响[J].农业资源与环境学报,2025,42(6):1658-1667,10.基金项目
山西省自然科学基金面上项目(202203021211264) Shanxi Provincial Natural Science Foundation Project(202203021211264) （202203021211264）
