以福建省天宝岩自然保护区集约经营的毛竹纯林(Ⅰ)、竹阔混交林(Ⅱ)和竹针混交林(Ⅲ)为研究对象，对其土壤理化性质及土壤酶活性特征进行研究。结果表明：集约经营状态下，毛竹纯林化经营可以改善土壤的物理性质，土壤密度由大到小依次为Ⅱ、Ⅲ、Ⅰ，毛竹纯林的非毛管孔隙度、最大持水量和最小持水量均最高。不同类型林分土壤化学性质及酶活性优劣次序不一致。毛竹纯林中的有机质、全氮、全钾、Ca2+、Mg2+含量和过氧化氢酶、磷酸酶活性在3种林分中最高，竹阔混交林的土壤pH、全磷、有效磷含量和脲酶活性最高，竹针混交林土壤水解氮、速效钾含量和蔗糖酶活性最高。对3种林分土壤性质进行综合评价，发现集约经营毛竹纯林的土壤综合得分由大到小依次为毛竹纯林(0.548 7)、竹阔混交林(0.437 6)、竹针混交林(0.411 2)，集约经营的毛竹纯林土壤综合性质最好。因此，对集约经营的毛竹混交林分中的混交树种进行管理十分必要。
Abstract
The soil physical properties, chemical properties and enzyme activity characteristics were studied in pure bamboo forest(Ⅰ), bamboo stand mixed with broadleaved trees(Ⅱ) and bamboo stand mixed with coniferous trees(Ⅲ). These bamboo forests with same management measures located in Yongan county, Fujian province. The results showed that the soil physical properties of pure bamboo forest were the best among different forest types. The bulk density of soil, noncapillary pore, maxim water holding capacity, minimum water holding capacity of pure bamboo forest was better than the physical indexes in bamboo stand mixed with broadleaved trees and bamboo stand mixed with coniferous trees. The change rules of soil chemical properties and enzyme activity were not consistent with the types of bamboo forest. The indexes value of organ matters, total nitrogen, total potassium, calcium, magnesium, catalase and phosphates were the highest in pure bamboo forest; the indexes of pH value, total phosphorus, available phosphorus and urea enzyme were the highest in bamboo stand mixed with broadleaved trees; the indexes of available nitrogen, available potassium and invertase were the highest in bamboo stand mixed with coniferous trees. The comprehensive scores of soil were in the order of pure bamboo forest(0.548 7)>bamboo stand mixed with broadleaved trees(0.437 6)>bamboo stand mixed with coniferous trees(0.411 2). The comprehensive properties in pure bamboo forest were the best. Usually the management measures of pure bamboo forest were more intensive than in the bamboo stand mixed with broadleaved trees. It was important to manage the mixed trees in bamboo forest.
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参考文献
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基金
收稿日期：2010-01-04修回日期：2010-06-23基金项目：“十一五”国家科技支撑计划(2006BAD19B0104；2006BAD19B0302)作者简介：刘广路(1975—)，助理研究员，博士。*范少辉(通信作者)，研究员。Email: fansh@icbr.ac.cn。引文格式：刘广路,范少辉,官凤英,等. 闽西北不同类型集约经营毛竹林土壤环境特征[J]. 南京林业大学学报:自然科学版,2010,34(5):17-22.
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