安徽农业科学2016，Vol.44Issue(25)：156-160,5.
黄土丘陵区退耕植被土壤水分·可溶性碳氮的变化特征
Change Characteristics of Soil Water Content, Dissolved Organic Carbon/Nitrogen Following Afforestation in Hilly Loess Region
摘要
Abstract
Objective] In order to study the changes of the soil water content ( SWC) , dissolved organic carbon and nitrogen ( DOC/DON) during the vegetation restoration on the Loess Hilly Region of China.[ Method] Robinia pseudoacacia L., Caragana korshinskii Kom, and a-bandoned land, were selected, with slope farmland as control.The seasonal and vertical distribution of SWC and DOC/DON under different kinds of vegetation were studied.[ Result] The results showed that SWC, DOC, and DON were affected by seasonal variations; the SWC showed the increasing after decreasing trend, while both the DOC and DON showed the contrary.Additionally, compared to the farmland, af-forestation greatly increased the SWC, DOC and DON.Furthermore, SWC showed the trend of abandoned land<R.pseudoacacia (CK) at the depth of 0-30 cm; but in the deep soil (30-200 cm), the SWC in forest (R.pseudoacacia and CK) was higher than that in abandoned land.Moreover, significant decrease in DOC and DON were observed from the depth of 0-10 cm to 20-30 cm and significant correlation be-tween SWC and DOC/DON were also showed (P<0.05).[Conclusion] Therefore, this study illustrated the dynamic changes of SWC and dissolved organic carbon/nitrogen in typical vegetation restoration of loess hilly region, which provided a scientific basis for further analyzing and evaluating the soil nutrients status on the Loess Hilly Region of China .关键词
退耕植被/土壤水分/可溶性碳氮/动态特征Key words
Afforestation/Soil water content/Dissolved organic carbon/nitrogen/Dynamic characteristics分类
农业科技引用本文复制引用
罗欣雨,王得祥..黄土丘陵区退耕植被土壤水分·可溶性碳氮的变化特征[J].安徽农业科学,2016,44(25):156-160,5.基金项目
国家林业部公益性行业科研专项（201304312）；国家自然基金项目（41301601）。 （）
