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| 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 |
| Received:October 12, 2024 |
| DOI：10.13254/j.jare.2024.0800 |
| 中文关键词: 红枣林;生态转型;微生物碳源利用;多样性指数 |
| 英文关键词: jujube forest;ecological transformation;microbial carbon source utilization;diversity index |
| 基金项目:山西省自然科学基金面上项目（202203021211264） |
| Author Name | Affiliation | E-mail | | MU Chunheng | College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China | | | LI Jiaqi | College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China | | | HUANG Fuchao | College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China | | | YIN Haishan | College of Economics and Management, Shanxi Agricultural University, Taigu 030801, China | | | WANG Gailing | College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China | gailingwang@qq.com |
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| 中文摘要: |
| 通过分析吕梁山区红枣经济林不同生态转型模式下土壤微生物功能多样性，为红枣经济林生态转型的可持续发展提供理论依据和实践参考，本研究采用Biolog-Eco微孔板技术，选取4种典型红枣林生态转型模式：补植油松（CP）、补植侧柏（PO）、补植苜蓿（AL）、补植药材（MM），以红枣林自然撂荒（CK）为研究对象，分析不同生态转型模式下土壤微生物的碳源代谢以及多样性指数特征。结果表明，与CK相比，CP、PO、MM和AL均显著提高了土壤微生物的碳源代谢活性，其中CP处理最高。对糖类、醇类、胺类和羧酸类利用最强的为PO，对氨基酸类和酯类利用最强的为CP，CK对6类碳源利用都表现最弱。不同生态转型模式下土壤均显著（P<0.05）提高了微生物对 6 类碳源的利用能力。CP 处理土壤微生物的 Simpson 指数（0.94）、McIntosh 指数（4.99）和碳源利用丰富度指数（19.01）均为最高，PO处理Shannon指数（2.91）为最高。相关性分析和偏最小二乘路径模型分析表明，土壤微生物功能多样性与土壤pH呈显著负相关（P<0.05），与土壤有机碳、微生物量碳以及全磷含量呈正相关（P<0.05）。有机物质输入量影响了土壤SOC和TN含量，进而影响不同生态转型模式土壤微生物对碳源利用能力和功能多样性指数。研究表明，红枣林中补植不同植被均提高土壤微生物的碳源代谢和多样性指数，其中补植油松、侧柏模式的效果优于补植苜蓿和药材。 |
| 英文摘要: |
| 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. |
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