| 黄土丘陵区不同土地利用类型下土壤酶活性和养分特征 |
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| 引用本文： | 董莉丽,郑粉莉.黄土丘陵区不同土地利用类型下土壤酶活性和养分特征[J].生态环境,2008,17(5). |
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| 作者姓名： | 董莉丽 郑粉莉 |
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| 作者单位： | 1. 陕西师范大学旅游与环境学院,陕西,西安,710062
2. 西北农林科技大学资源与环境学院,陕西,杨凌,712100;中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100 |
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| 基金项目： | 中国科学院"西部之光"人才培养计划
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西北农林科技大学校科研和教改项目
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拔尖人才计划
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| 摘 要： | 研究了土地利用类型对土壤酶活性和土壤养分的影响.首先通过最小显著性差异(LSD)评价各样地之间和同一样地土壤剖面四个不同层次的土壤酶活性和养分的差异,其次分析四种土壤酶(转化酶、碱性磷酸酶、脲酶和过氧化氢酶)活性和土壤养分之间相关性;最后以农地为对照,应用土壤恢复指数研究不同土地利用类型对土壤的改良效果.研究结果表明,同农地相比,不同土地利用类型的表层(0～5 cm)土壤四种酶活性、全氮、有机质和碱解氮含量均有所提高,且在同一土地利用类型下表层土壤酶活性和养分均显著大于下部各土层.相关性分析表明,土壤四种酶活性与有机质、全氮、碱解氮呈极显著正相关关系.同农地相比,其余土地利用类型表层土壤质量显著提高,而以杨树、侧柏、油松、仁用杏和刺槐5种人工林地的土壤质量提高最为明显,同龄树种中,杨树对土壤的恢复效果大于刺槐和油松.
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| 关 键 词： | 土地利用类型 土壤养分 土壤酶活性 剖面分布 黄土丘陵区 |
Characteristics of soil enzyme activities and nutrients under various landuse in the Loessial hilly-gully region |
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| Dong Lili,Zheng Fenli.Characteristics of soil enzyme activities and nutrients under various landuse in the Loessial hilly-gully region[J].Ecology and Environmnet,2008,17(5). |
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| Authors: | Dong Lili Zheng Fenli |
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| Abstract: | The effects of landuse types on the soil enzyme activities and nutrients were studied in this paper. Least significant difference(LSD) method was used to analyze the differences of soil enzyme activities and nutrients in different soil layers of the same landuse and among various landuse types. Relations between soil enzyme activities of invertase glucose,alkaline phosphatase,urease,and catalase and soil nutrient were analyzed. The soil restoration index was used to evaluate the effects of landuse on the so... |
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| Keywords: | landuse type soil nutrient soil enzyme activities profile distribution the loessial hilly-gully region |
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