西安理工大学学报2017，Vol.33Issue(4)：443-449,7.DOI:10.19322/j.cnki.issn.1006-4710.2017.04.012
黄土高原典型流域“自然-人工”植被对土壤表层碳分布的影响
Effects of "nature-artificial" vegetation on surface soil carbon distribution in typical watershed of the Loess Plateau
摘要
Abstract
The large scale Grain for Green Project has a significant effect on soil organic carbon in the Loess Plateau.Compared with soil organic carbon,soil active organic carbon is highly sensitive to changes of microenvironment and could be cited as a sensitive indicator for changes in soil quality.In order to investigate the effects of different vegetation restoration types on soil organic carbon (SOC) and the main soil active organic carbon components POC,MBC and EOC in the-Loess Plateau,and three vegetation types in the Wangmaogou watershed are selected as research subjects.Soil samples in 0～10 cm and 10～20 cm layers are collected to measure SOC and active organic carbon components.The results show that:① The SOC densities from large to small in turn are:Apricot,Chinese pine,Dam land corn.② The POC content in 0～10 cm are higher than that in 10～20 cm layer with the same vegetation type;the microbial activities are mainly distributed in soil layer of 10～20 cm;the soil EOC contents of 10～20 cm layer in dam land corn and apricot land are higher than that of 0～10 cm layer.In Chinese pine land,on the contrary,the EOC content in 0～10 cm layer is higher than that in 10～20 cm layer.③ The SOC content in dam land corn is much less than that in Chinese pine and apricot land,with the EOC contents having significant influences on the SOC pool.关键词
土壤有机碳/颗粒态有机碳/微生物量碳/易氧化有机碳Key words
soil organic carbon/particulate organic carbon/microbial biomass carbon/easily oxidizable organic carbon分类
建筑与水利引用本文复制引用
张祎,李鹏,马田田,刘晓君,时鹏,徐国策,苏远逸..黄土高原典型流域“自然-人工”植被对土壤表层碳分布的影响[J].西安理工大学学报,2017,33(4):443-449,7.基金项目
国家自然科学基金重点资助项目(41330858) （41330858）
陕西省水利厅科技资助项目(2015slkj-06) （2015slkj-06）
国家自然科学基金资助项目(41601092) （41601092）
