期刊论文

中文

水土保持学报

1009-2242

2016

30

1

189-195

10.13870/j.cnki.stbcxb.2016.01.035

国家林业局推广项目（[2014]52） 国家林业局荒漠化（石漠化）定位监测项目（20130910,20150618） 中南林业科技大学青年基金重点项目（QJ2012010A）

本校为第一机构

以湖南省邵阳县郦家坪镇轻度、中度和重度石漠化程度的土壤为研究对象,分别在3种不同石漠化程度的样地采集土壤(0—15cm,15—30cm,30—45cm 3个土层)样品,并对土壤物理性质、养分含量特征及其之间的相关性进行了分析。结果表明:随着石漠化程度的加深,土壤呈现明显的沙化现象;土壤容重逐渐增大,孔隙度、毛管持水量减小。土壤偏弱酸性;有机质、全N与全P含量变化均表现为中度(弃耕地) >轻度>重度,Ca、Mg含量随着石漠化程度加深逐渐增加。土壤有机质、全N含量、土壤机械组成、土壤容重、孔隙度等理化因子之间相关性显著(p

The study site,located in the Town Lijiaping of Shaoyang county,Hunan province,was investigated. Soil samples were collected at different depths including 0—15cm,15—30cm,and 30—45cm from the light rocky desertification(LRD)area,moderate rocky desertification(MRD)area and intense rocky desertification (IRD)area.Soil physiochemical properties,nutrient content characteristics and their correlations were analyzed.The results showed that with the deterioration of rocky desertification,soil sand content and soil bulk density increased significantl...