GUO Yuefeng,QI Wei,YAO Yunfeng,et al.Effect of Land Use Changes on Soil Microbial Biomass Carbon and Soil Nutrients[J].Northern Horticulture,2016,40(11):166-169.[doi:10.11937/bfyy.201611044]
土地利用方式对土壤微生物生物量碳和土壤养分的影响
- Title:
- Effect of Land Use Changes on Soil Microbial Biomass Carbon and Soil Nutrients
- 文献标志码:
- A
- 摘要:
- 以天然草地、由天然草地转化成的农用坡耕地和22年生小叶杨人工林3种土地利用方式为研究对象，分析了土壤微生物生物量碳与土壤养分的变化规律，以揭示土壤微生物生物量碳与土壤养分对不同土地利用方式的响应规律，为内蒙古农牧交错带的生态建设提供依据。结果表明：不同土地利用方式明显影响土壤微生物生物量碳的含量，且3种不同土地利用方式土壤微生物生物量碳含量差异显著（P<0.05），表现为22年生小叶杨人工林>天然草地>农用坡耕地；不同土地利用方式土壤微生物生物量碳的垂直分布表现为随土壤深度的增加而降低；土壤微生物生物量碳与速效钾、全氮、pH以及容重呈显著相关关系，说明土壤微生物生物量碳可作为衡量土壤质量变化的重要敏感指标。
- Abstract:
- The objectives are to understand the laws how soil microbial biomass carbon and soil nutrients respond to different land use patterns，and thus to provide a basis for eco-construction in the agro-pasture zigzag zone in Inner Mongolia.Three land use patterns were studied，including natural grassland，sloping cropland converted from natural grassland，and 22-year-old Populus simonii man-made forest.The changing laws of both soil microbial biomass carbon and soil nutrients were studied.The results showed that land use patterns significantly affected the soil microbial biomass carbon contents and the effects were significantly different among land use patterns，22-year-old P.simonii forest>natural grassland>sloping cropland.As for the vertical distribution，soil microbial biomass carbon contents declined with the increase of soil depth for each land use pattern.Soil microbial biomass carbon content was significantly correlated with available K(AK) content，total N(TN) content，pH and bulk density，indicating soil microbial biomass carbon could be used as a sensitive indicator to measure the changes of soil quality.
参考文献/References:
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备注/Memo
第一作者简介：郭月峰（1982-），女，博士，讲师，研究方向为荒漠化防治。E-mail：guoyuefeng0525@126.com.责任作者：姚云峰（1959-），男，博士，教授，博士生导师，现主要从事荒漠化和水土保持等研究工作。E-mail：18904718855@163.com.基金项目：国家自然科学基金资助项目(31500584)；内蒙古自然科学基金资助项目（2016MS0407）;内蒙古应用研究与开发计划资助项目(20110732);内蒙古自治区高等学校科学研究资助项目（NJZZ16055）。