作　　者： ; ; ;

机构地区： 华南农业大学林学院

出　　处： 《生态科学》 2015年第3期85-89,共5页

摘　　要： 2008年1月至2月,雨雪冰冻天气袭击广东粤北地区。冻雨在枝叶上形成冰柱,造成大量的折干残体。冰雪灾害对森林土壤的影响是森林恢复和管理的关键所在,然而对灾害引起土壤物理性质的变化研究甚少。为了研究冰雪灾害对土壤物理性质的影响,在粤北乐昌林场杉木林内建立三个面积为20 m×20 m的固定标准地,分别在标准地中心以及四个角采集上土层(0—20 cm)和下土层(20—40 cm)的土样,测定土壤物理性质:土壤容重、毛管持水量、总孔隙度、毛管孔隙度、非毛管孔隙度和通气孔隙度。研究结果表明:与2008年相比,2011年杉木林地土壤容重降低,而土壤毛管持水量、总孔隙度、毛管孔隙度、非毛管孔隙度和通气孔隙度均升高,说明冰雪灾害对土壤物理性质有重要影响。 A huge ice storm stroke on the north of Guangdong Province from January to February 2008. Icicles were produced on branches and leave of trees by sleets, resulting in that many live trees were damaged by crown breaking. The impacts of ice storm on forest soil are critical to forest restoration and management. However, people have little knowledge about ice storm-induced impact on soil physical property. In order to study the response of soil physical property to the damage, a typical Cunninghamia lanceolata stand in Lechang Forest Farm（located in Guangdong Province, southern China） was selected, and three plots with size of 20 m ×20 m were set up. At each plot, soil samples were collected from 0 to 20 and 20 to 40 cm depths at the center and near the four corners of each plot to measure soil physical properties, including soil bulk density, capillary moisture capacity, total porosity, capillary porosity, non-capillary porosity and aeration porosity. Compared to 2008, the soil bulk density of the C. lanceolata stand decreased, whereas its total porosity, capillary porosity, non-capillary porosity, air filled porosity and capillary moisture capacity increased in 2011. Our results indicated that ice storm resulted in changes in soil physical property.

关 键 词： 冰雪灾害 土壤物理性质 杉木林 广东粤北 森林恢复

领　　域： [农业科学]