| 陈小燕,吕家珑,张红,王娟,苗惠田.子午岭不同植被类型土壤微生物量与有机酸含量[J].干旱地区农业研究,2008,(3):167~170 |
| 子午岭不同植被类型土壤微生物量与有机酸含量 |
| Studies on soil micro biomass and organic acid under different vegetations |
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| DOI：10.7606/j.issn.1000-7601.2008.03.34 |
| 中文关键词: 植被类型 微生物量 有机酸 |
| 英文关键词:egetation type micro biomass organic acid |
| 基金项目:黄土高原土壤侵蚀与旱地农业国家重点实验室基金项目(10501-138)； 国家基础研究发展规划项目(2005CB121102)； 西北农林科技大学创新团队计划资助项目 |
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| 中文摘要: |
| 以黄土丘陵沟壑区的子午岭次生林区为研究区域,分析了农田、草本、乔木、灌木、弃耕地五种不同植被覆盖下土壤微生物量与有机酸含量变化。结果表明,不同植被类型土壤微生物生物量C变化趋势是:农田>草本>乔木>弃耕地>灌木,从乔木到农田微生物生物量N、P基本上呈下降趋势。不同植被类型下土壤有机酸变化基本趋势为:弃耕地<灌木<草本<农田<乔木。相关分析表明,不同植被覆盖下土壤微生量C、P与该土壤有机酸含量呈显著正相关,而土壤微生物N与该土壤有机酸含量相关性不显著。 |
| 英文摘要: |
| Based on the secondary forest at Ziwuling in typical hilly-gully regions on the Loess Plateau the soil micro biomass and organic acid under different vegetation type were studied．The results showed that the soil micro biomass C was in the following order：farmland＞grassland＞arbor＞abandoned field ＞bush．There were downtrends in micro biomass N、P from arbor to farmland．Under different vegetation type the content of soil organic acid was basically in the order of arbor＞farmland＞grassland＞bush＞abandoned land．Correlation analysis indicated that there were positive correlations between soil microbial biomass N、P and organic acid and a rather weak correlation between soil microbial biomass N and organic acid. |
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