摘要
采用空间代替时间法研究了扰动边坡植被恢复过程中的土壤性质演变。结果表明,扰动边坡植被恢复过程中土壤含水量呈上升趋势,土壤容重呈下降趋势。随着植被的恢复,土壤物理性质逐渐改良。土壤有机质、全氮、速效氮、微生物量碳、微生物量氮、土壤呼吸呈上升趋势。全磷和全钾变化趋于稳定,速效磷和速效钾随着植被恢复演替在前期呈现增加的趋势,随后又降低,最后趋于稳定。土壤微生物呼吸速率随着植被恢复年限的增加呈上升趋势,说明植被在恢复过程中,土壤的熟化程度越来越高。
By taking disturbed slopes as research sites, soil quality characteristics during community succes sion on disturbed slopes were studied by the method ＂space substitute for time＂. The main conclusions are as follows： During the process of vegetation restoration, soil moisture rose and soil bulk density declined, which indicate that soil physical properties were gradually improved. Soil organic matter, total nitrogen, available nitrogen, soil microbial biomass carbon（MBC）, soil microbial biomass nitrogen（MBN） and soil res piration showed an upward tendency, while total phosphorus and total potassium showed a stable state. Available phosphorus and available potassium in vegetation restoration succession increased in prophase and then decreased to a tendency toward stabilization. Soil microbial respiratory rate showed an upward trend with succession. Soil activation became more and more evident.
出处
《水土保持通报》
CSCD
北大核心
2013年第5期82-86,共5页
Bulletin of Soil and Water Conservation
基金
科学技术部"十二五"科技支撑项目"金沙江梯级水电开发区生态保护与入库泥沙调控关键技术与示范:河岸工程施工区生态系统修复技术与示范"(2012BAC06B02-04)
国家自然科学基金项目"植被混凝土生态防护基材活性增强机理研究"(51278281)
关键词
边坡
植被恢复
土壤性质
slope
vegetation restoration
soil property
