生态环境学报2016，Vol.25Issue(8)：1300-1305,6.DOI:10.16258/j.cnki.1674-5906.2016.08.007
森林火灾对烟台蓁山次生林土壤性质的影响
Effects of Forest Fire on Soil Properties of Secondary Forests on Zhenshan Mountain in Yantai, Shandong Province
摘要
Abstract
Increasing researches focusing on forest fires have been carried out according the ever-increasing global temperature and forest fires throughout the world. As a main natural disturbance factor of northern forest system, forest fires could have acute effects on soil properties within a short time, which in turn affects the ecological recovery process. Zhenshan Mountain lies in the coast of the Yellow Sea in northern Shandong Peninsula where forest fires frequently break out because of the frequent human activities and dry and windy weather in spring. The present study takes the secondary forest of Zhenshan mountain as research object. Soil samples were collected from unburned and burned area on both shady and sunny slopes. The effects of forest fires on physical and chemical properties, microbial community, enzymatic activity and nitrogen cycle of soil were assessed. And the results showed that (1) fire greatly changed the soil physical and chemical properties: it decreased the water content, total carbon and total nitrogen, while the pH of the soil varied slightly; (2) the soil microbial biomass carbon increased significantly, while the soil microbial biomass nitrogen were not; bacteria amount especially those in shady slope decreased significantly, while fungi and actinomyces amounts were not; (3) enzymatic activities of phosphatase and catalase but urease decreased; (4) compared with the control, mineralization and nitrification rate of the shady slope decreased significantly, while the counterpart of sunny slope varied slightly. Collectively, forest fires could change the soil properties, cause productivity decline in a short time and affect the microenvironment of the woodland, which will greatly affect the recovery process of the ecosystem.关键词
森林火灾/土壤微生物/酶活性/土壤矿化/生态恢复Key words
forest fires/soil microbes/enzyme activity/soil mineralization/ecological restoration分类
农业科技引用本文复制引用
刘瑞斌,李莉,陈鹏东,咸旭阳,赵雪,侯玉平..森林火灾对烟台蓁山次生林土壤性质的影响[J].生态环境学报,2016,25(8):1300-1305,6.基金项目
国家自然科学基金青年项目（31300465）,山东省自然科学基金项目（ZR2012CQ020）,山东省高等学校科技计划项目 （）
