【摘要】 为深入探究雄安新区上游区域内典型植被类型土壤理化性质及酶活性垂直变化特征。以河北洪崖山国有林场为例，选取栓皮栎林、刺槐林、侧柏林、油松林3个(0-10、10-20、20-30 cm)土层为研究对象，测定其土壤理化性质与酶活性，并采用Pearson相关性分析、方差分析和冗余分析(RDA)等统计方法，探讨4种林分类型土壤理化指标和酶活指标垂直变化特征。1)油松、侧柏林0-10 cm土层的TN含量和N/P显著高于20-30 cm土层(P<0.05);4种林分土壤AP与AN含量均随土层深度增加而减小，且4种林分类型的土壤均为中性土。2)不同林分类型土壤SUC和URE活性均随土层深度的增加呈现递减趋势，且URE活性在不同土层间差异显著。3)除土壤C/N外，土层深度对土壤指标均呈显著或极显著影响；土层深度与林分类型的交互作用对土壤URE活性具有极显著影响。4)土壤BD、SOC、p H以及TN对土壤酶活性呈极显著影响，在一定程度上4种林分土壤酶活性受土壤理化性质影响，其中林分类型是调控土壤性质的关键因素。更多还原

【Abstract】 In order to further explore the vertical changes of soil physical and chemical properties and enzyme activities of typical vegetation types in the upstream area of Xiong’an New Area. Taking the state-owned forest farm in Hongyashan, Hebei Province as an example, three soil layers(0-10, 10-20,20-30 cm) of cork oak forest, locust forest, cypress cypress and pine tabulaeformis forest were selected as research objects to determine the soil physicochemical properties and enzyme activity, and the vertical changes of soil physicochemical indexes and enzyme activity indexes of the four stand types were discussed by Pearson correlation analysis, analysis of variance and redundancy analysis(RDA). 1) The TN content and N/P of the 0-10 cm soil layer of Pinus tabulaeformis and Cypress lateral were significantly higher than those of the 20-30 cm soil layer(P<0.05). The soil AP and AN contents of the four stands decreased with the increase of soil depth, and the soils of the four stand types were all neutral soils. 2) The soil SUC and URE activities of different stand types showed a decreasing trend with the increase of soil depth, and the URE activity was significantly different between different soil layers. 3) Except for soil C/N, soil depth had significant or extremely significant effects on soil indexes. The interaction between soil depth and stand type had a significant impact on soil UE activity. 4) Soil BD, SOC, PH and TN had a significant effect on soil enzyme activities, and to a certain extent, the soil enzyme activities of the four stands were affected by soil physical and chemical properties, and the stand type was the key factor regulating soil properties.更多还原