森林与环境学报2024，Vol.44Issue(5)：492-500,9.DOI:10.13324/j.cnki.jfcf.2024.05.006
虫食叶凋落物添加对土壤有机碳矿化及激发效应的影响
Effects of herbivory leaf litter addition on soil organic carbon mineralization and priming effect
摘要
Abstract
Plant leaf litter is an important factor in controlling soil organic carbon(SOC)mineralization.Previous studies have mainly focused on the effects of healthy litter addition on the SOC mineralization rate and priming effect,but it is not well-known how changes in the physical and chemical properties of herbivory leaf litter affect SOC mineralization.In the present study,we compared the effects of non-herbivory(NHL),herbivory(HL),and mechanical damage(MDL)leaf litter of Quercus pachyloma on SOC mineralization and priming Q.pachyloma leaf litter.Our results showed that the total and soil-derived CO2emission accumulation increased after leaf litter addition compared to the control treatment without litter addition,and the positive priming effect ranged from 133.7%to 169.8%.Compared with the NHL treatment,the soil total CO2 emission rate and accumulation and litter-derived CO2 emission rate and accumulation were significantly increased under the HL treatment.However,there were no differences in the accumulation of soil-derived CO2 emissions or priming effects between the NHL and HL treatments.Compared with the MDL treatment,the soil total CO2 emission rate and accumulation,soil-derived CO2 emission rate and accumulation,and the priming effect significantly decreased under the HL treatment.However,there were no differences in litter-derived CO2 accumulation between the MDL and HL treatments.Our results imply that changes in the physical fragmentation and chemical quantity of herbivory leaf litter are the key factors regulating SOC mineralization and the priming effect.In the future,it will be necessary to strengthen the protection against forest pests and reduce tree-leaf herbivory to improve forest carbon sinks.关键词
虫食叶凋落物/破碎化/化学质量/激发效应Key words
herbivory leaf litter/fragmentation/chemical quality/priming effect分类
农业科技引用本文复制引用
娄肖寒,陈子亮,应宇馨,胡亚林..虫食叶凋落物添加对土壤有机碳矿化及激发效应的影响[J].森林与环境学报,2024,44(5):492-500,9.基金项目
国家自然科学基金项目"昆虫食叶行为对亚热带典型常绿阔叶林叶凋落物分解及SOC周转的影响"(42077094). （42077094）
