摘要
通过对泥质海岸防护林土壤酶活性和理化性质关系的研究得出：（１）四种土壤酶（蔗糖酶、碱性磷酸酶、脲酶、蛋白酶）与土壤水稳性团粒含量、容重、孔隙率、有机质含量、盐分含量、全氮含量、速效磷含量、ｐＨ值有着密切的关系、而与物理性粘粘含量、含水量、速效钾含量不相关；（２）通过典型相关分析，土壤酶与理化性质之间关系密切，第一对典型变量的相关系数达０．９４４３。在土壤酶中起主要作用的是脲酶和蛋白酶，在理化性质中起主要作用的是容重和全氮含量；（３）分别给出了４种酶与理化性质的回归方程，并运用逐步回归使方程得到了简化；（４）土壤酶活性可作为评价立地生产力的指标。
Through studying the relationship of soil enzyme activities and physical and chemical properties in the areas of silting coastal protective forest,the results are as follows:(1)There are close relations between the four soil enzymes(invertase, alkaline prosphatase, urease, protease) and soil granular structure content of water stability, unit weight, porosity, organic substances,salt content,total-N,available-p and pH, while there is no relation between these enzymes and physical clay particle content, water content and available-K of soil.(2)By typical correlation analysis, soil enzymes and physical, chemical properties have a very close relation. The correlation coefficient of the first pair of typical variable is 0.944 3.Urease and protease play an important role in soil enzymes, while in the physical and chemical properties of soil, unit weight and total-N are more important than other factors.(3)The paper gives not only the regression equations of the enzymes and physical,chemical properties of soil respectively, but also the simplified equations by stepwise regression.(4)Soil enzyme activities can be used as the indexes of evaluating site productivity.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1995年第5期37-45,共9页
Journal of Northeast Forestry University
基金
国家"八五"科技攻关专题
