WANG Yan-li.Profile Distribution Characteristics of Root Biomass and Soil Organic Carbon under Different Vegetation Restoration Measures[J].Research of Soil and Water Conservation,2013,20(06):19-23,43.
不同植被恢复措施下剖面根系与SOC的分布特征
- Title:
- Profile Distribution Characteristics of Root Biomass and Soil Organic Carbon under Different Vegetation Restoration Measures
- 分类号:
- S153.6+1
- 摘要:
- 根系是影响水土流失和土壤有机碳（SOC）变化的重要因素。在水土流失区，研究不同植被恢复措施下，根系生物量和土壤有机碳的分布特征对了解区域土壤碳循环具有重要意义。在水土流失严重的黄土丘陵沟壑区的燕沟小流域，选择地形条件类似的梁峁坡，采集了10种不同植被治理恢复措施下的剖面（0—100 cm）根系和土壤样品，研究了根系生物量和SOC在剖面的分布特征。结果显示：不同治理措施下的SOC呈现出灌木 > 乔木 > 灌草 > 草本的趋势，而根系生物量呈现出乔木 > 灌木 > 灌草 > 草本的趋势；SOC和细根生物量都随土层深度的增加呈对数递减趋势，但同一土层SOC和细根生物量的分布不一致，且根系比SOC的分布浅。
- Abstract:
- Roots play an important role in soil erosion control and carbon sequestration. It is significant to understand profile distribution characteristics of root biomass and soil organic carbon (SOC) under different vegetation restoration measures in soil eroded area. In the small watershed of Yan-gou in Loess Hilly Region of China, 10 sites were selected to sample roots and soil under similar topography condition of ridge slope to study the profile distribution characteristics of root biomass and soil organic carbon. SOC in 0—100 cm showed the trend of shrub > woods > shrub and grass > grass, but fine root biomass showed the trend of the woods > shrub > shrub and grass > grass; both SOC and fine root biomass logarithmically decreased with soil depth, however, distribution of SOC was inconsistent with fine root biomass, and distribution of fine root was shallower than the SOC.
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备注/Memo
收稿日期:2013-01-17;改回日期:2013-03-31。
作者简介:王彦丽(1963-),女,内蒙古鄂尔多斯人,高级工程师,现从事环境影响评价与峻工环境保护验收工作。E-mail:1203708098@qq.com