应用生态学报2013，Vol.24Issue(1)：17-24,8.
红松阔叶混交林林隙大小对土壤水分空间异质性的影响
Effects of gap size on the spatial heterogeneity of soil water in Pinus koraiensis-dominated broad-leaved mixed forest
摘要
Abstract
In August-October 2011, the soil water content (SWC) at different depths in different sized gaps in Pinus koraiensis-dominated broad-leaved mixed forest of Xiaoxing' an Mountains, Northeast China was continuously measured by grid nesting method and time domain reflectometry (TDR) , and the spatial heterogeneity of the SWC was analyzed by the principles and approaches of geostatistics. The SWC was most abundant in medium gap, followed by in large gap and in small gap whereas the maximum difference of SWC was the biggest in large gap, followed by in medium gap, and in small gap. The variation range of the nugget of SWC at different depths in the large, medium, and small gaps was 0.001-0.404, 0.001-0.273, and 0.001-0.261, respectively. The SWC heterogeneity resulted from random part and the total system SWC spatial heterogeneity were decreased in the order of large gap > medium gap > small gap. The spatial distribution pattern of SWC was most complicated in medium gap, while the spatial dependence in the variation of the SWC pattern was the strongest in large gap. High-grade patches (SWC was 50% -60% ) occupied the largest area in medium gap, followed by in large gap, and there was no high-grade patch in small gap. As for the SWC at same depths and in same months, its grade distribution was most simple in small gap, but relatively complicated in large and medium gaps. The maximum value of SWC increased with increasing gap size.关键词
红松阔叶混交林/林隙大小/土壤含水量/地统计学/空间异质性Key words
Pinus koraiensis -dominated broad-leaved mixed forest/forest gap size/soil water con-tent/geostatistics/spatial heterogeneity分类
农业科技引用本文复制引用
王丽霞,段文标,陈立新,杜珊,魏全帅,赵健慧,张琛..红松阔叶混交林林隙大小对土壤水分空间异质性的影响[J].应用生态学报,2013,24(1):17-24,8.基金项目
国家自然科学基金项目(31270666)、黑龙江省自然科学基金项目(C201231)、哈尔滨市科技创新人才研究专项资金项目(RC2012LX002018)、东北林业大学本科生校级创新性实验项目(201210225097)、人力资源与社会保障部留学回国人员科技活动择优启动项目(2011-508)和教育部留学回国人员科研启动基金项目(2010-1561)资助. （31270666）
