武夷山不同林型土壤酶活性与林木生长关系的研究

通过对武夷山９种林型土壤酶活性的研究表明：不同林型各种土壤酶活性呈现上层高下层低的层次性；不同林型各种土壤酶活性表现出差异性；不同林型各种土壤酶活性大多有明显的夏季高冬季低的季节性动态变化；不同林型各种土壤酶活性及土壤养分的季节性变化与林木生长高峰相吻合；不同林型各种土壤酶活性与土壤氮、磷、钾肥力呈显著正相关，故各种土壤酶活性水平可作为评价土壤肥力的指标。

Studies on the Correlation Between Soil Enzyme Activities of Different Forest Types and Forest Tree Growth in the Wuyi Mountain

By means of studies on the soil enzyme activities of nine forest types in the Wuyi Moun-tain this paper reveals that various soil enzyme activities of different forest types are high in the upper layer and low,in the lower layer:they are different:most of them possess evident seasonal dynamic changes(i.e.high in summer and low in winter):the seasonal changes of them and soil nutrients tally with the growth peak of forest trees;they assume significantly positive correlation with the fertility of nitrogen,phosphorus and potassium in the soils and so the various soil enzyme activity levels can be as the indexes of evaluating soil fertility。