摘要
采用氯仿熏蒸法和BIOLOG检测法,分别研究了黄土高原地区弃耕地在演替早期人工添加豆科植物紫花苜蓿(Medicago sativa)、草木樨(Melilotus suaveolen)、沙打旺(Astragalus huangheensis)后土壤微生物生物量和生物多样性的变化。结果表明:添加豆科植物后,土壤微生物量碳(MBC)显著增加(除草木樨外);MBC质量分数与土壤有机碳质量分数的比率、土壤微生物在BIOILOG微平板上的平均每孔颜色变化率和碳源利用能力及其代谢多样性指数均显著提高。
The effects of sowing legume species （Medicago sativa, Melilotus suaveolen and Astragalus huangheensis） on soil microbial biomass carbon and functional diversity were studied in the abandoned fields of the Loess Plateau. Soil microbial biomass carbon was measured by chloroform suffocating and functional diversity was measured by BIOLOG. The results show that there are higher soil microbial biomass carbon （except for Melilotus suaveolen） and soil microbial biomass/organic carbon after sowing legume species in abandoned-field. The average well color development in BIOLOG assays increase; the sole carbon source metabolic ability of soil microbial communities and the microbial metabolic diversity indices are significantly higher.
出处
《兰州大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第3期55-60,共6页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金项目(30670341)
长江学者和创新团队发展计划项目
关键词
豆科植物
弃耕地
土壤微生物群落
土壤微生物生物量
功能多样性
黄土高原
legume species
abandoned field
soil microbial community
soil microbial community
functional diversity
LoessPlateau
