干旱区生态环境知识资源中心(Arid): 渭北旱塬土壤的生化活性指标

Arid

	渭北旱塬土壤的生化活性指标
其他题名	Soil Biochemical Properties in Weibei Arid Regions
	王军星 1; 谭向平 2; 和文祥 2; 王旭东 2; 郝明德 3
来源期刊	西北农业学报
ISSN	1004-1389
出版年	2011
卷号	20 期号:7 页码:173-178
中文摘要	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。
英文摘要	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 analyzed with correlation and principal component analysis(PCA).The results showed that the soil enzyme activities change remarkably to a large extent.The variation coefficients of urease,dehydrogenase,and respiration intensity were larger than the others,which indicated that they were most sensitive to environmental changes;Activities of soil invertase,urease,phosphatase,dehydrogenase,respiration intensity and arylsulfatase were significantly or extremely significantly related with most soil physic-chemical properties,which demonstrated the six biochemical activities could monitor soil fertility.The soil information system obtained by PCA could be better to reflect difference of soil fertility levels;The newly constructed Total Enzyme Activity Index(TEI)had good correlation with soil properties.Although the correlation coefficients of TEI with soil properties were slightly lower than that of composite scores,TEI could be used as a efficient index to monitor soil fertility due to simple calculation and good correlation as well as without unit dimension.
中文关键词	土壤酶 ; 总体酶活性参数 ; 渭北旱塬 ; 主成分分析 ; 土壤肥力
英文关键词	Soil enzyme The total enzyme activity index Weibei arid region Principle component analysis Soil fertility
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4263651
来源机构	西北农林科技大学 ; 中国科学院水利部水土保持研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227228
作者单位	1.西北农林科技大学生命科学学院, 杨凌, 陕西 712100, 中国; 2.西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国; 3.中国科学院水利部水土保持研究所, 杨凌, 陕西 712100, 中国
推荐引用方式 GB/T 7714	王军星,谭向平,和文祥,等. 渭北旱塬土壤的生化活性指标[J]. 西北农林科技大学, 中国科学院水利部水土保持研究所,2011,20(7):173-178.
APA	王军星,谭向平,和文祥,王旭东,&郝明德.(2011).渭北旱塬土壤的生化活性指标.西北农业学报,20(7),173-178.
MLA	王军星,et al."渭北旱塬土壤的生化活性指标".西北农业学报 20.7(2011):173-178.