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| 渭北旱塬土壤的生化活性指标 | |
| 引用本文： | 王军星,谭向平,和文祥,王旭东,郝明德.渭北旱塬土壤的生化活性指标[J].西北农业学报,2011,20(7):173-178. |
| 作者姓名： | 王军星 谭向平 和文祥 王旭东 郝明德 |
| 作者单位： | 1. 西北农林科技大学生命科学学院,陕西杨凌712100;西北农林科技大学资源环境学院,陕西杨凌 712100 2. 西北农林科技大学资源环境学院,陕西杨凌,712100 3. 中国科学院水利部水土保持研究所,陕西杨凌,712100 |
| 基金项目： | 中国科学院知识创新工程重大项目(KSCX-YW-09-07); 西北农林科技大学“青年学术骨干人才支持”计划项目 |
| 摘 要： | 采用非缓冲液法,对渭北旱塬长武试区25个土样中影响碳、氮、磷、硫等循环的7种生化活性进行测定,并借助相关分析和主成分分析探讨土壤酶活性与土壤肥力关系。结果表明,供试土壤酶活性变化幅度较大;脲酶、脱氢酶、呼吸强度变异系数较大,对外界环境变化反应较为敏感;转化酶、脲酶、磷酸酶、脱氢酶、呼吸强度和芳基硫酸酯酶与大多数理化性质达显著或极显著正相关,说明此6种生化活性在一定程度上可表征土壤肥力高低;对土壤酶活性与理化性质进行主成分分析,获得土壤肥力信息系统也可较好揭示土壤肥力水平差异;土壤总体酶活性TEI与土壤性质也达到了较高相关水平,尽管其相关系数略低于主成分获得的综合得分,但由于其没有单位量纲,计算简便易行,相关性较好,因此可作为土壤肥力水平监测指标之一。 |
| 关 键 词： | 土壤酶 总体酶活性参数 渭北旱塬 主成分分析 土壤肥力 |
Soil Biochemical Properties in Weibei Arid Regions |
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| WANG Junxing,TAN Xiangping,HE Wenxiang,WANG Xudong and HAO Mingde.Soil Biochemical Properties in Weibei Arid Regions[J].Acta Agriculturae Boreali-occidentalis Sinica,2011,20(7):173-178. | |
| Authors: | WANG Junxing TAN Xiangping HE Wenxiang WANG Xudong and HAO Mingde |
| Institution: | WANG Junxing{1,2 },TAN Xiangping2,HE Wenxiang2,WANG Xudong2 and HAO Mingde3(1.College of Life,Northwest A&F University,Yangling Shaanxi 712100,China,2.College of Resources and Environment,3.Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,China) |
| Abstract: | Soil enzymes,as major component in soil,play an important role in nutrient transformation,energy metabolism,soil fertility monitoring,etc.it was needed to study because their relationship was not consisted to monitor soil fertility levels between soil single enzyme and soil fertility.By no-buffer method,seven biochemical activities affecting the transferring of carbon,nitrogen,phosphorus,sulfur were investigated in Weibei arid land,The relationship between soil biochemical properties and fertility was analy... |
| Keywords: | Soil enzyme The total enzyme activity index Weibei arid region Principle component analysis Soil fertility |
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