文献类型：期刊文献

中文题名：中亚热带典型人工林土壤质量演变及其环境意义

英文题名：Soil quality evolvement and its environmental significance of typical plantations in mid-subtropics of China

作者：吴明[1,2] 邵学新[2] 周纯亮[1] 胡锋[1]

第一作者：吴明

机构：[1]南京农业大学资源与环境科学学院;[2]中国林业科学研究院亚热带林业研究所

年份：2009

期号：9

起止页码：1813-1817

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家"十五"科技攻关资助项目(2001BA506B01)

语种：中文

中文关键词：人工林;土壤质量;碳循环

外文关键词：plantation ; soil quality ; carbon cycle.

分类号：S158

摘要：对中亚热带不同发育阶段的杉木(Cuninghamia lanceolgta)和湿地松(Pinus elliottii)人工林以及对照次生常绿阔叶林土壤的有机质、全氮、全磷和碱解氮、速效磷和速效钾含量进行了研究。结果表明:从不同森林类型来看,土壤有机质、全氮和全磷表现为次生林高于杉木和湿地松林,且杉木随着林龄增加而增加,湿地松随林龄增加而降低,但土壤全磷相对前二者变化较平缓;土壤速效态养分总体也表现为次生林高于杉木和湿地松林,但10年生和20年生杉木林土壤碱解氮和速效钾含量低于30年生杉木林的土壤,而湿地松林土壤则相反;另外,从生态环境角度探讨了肥力指标演变可能带来的生态环境影响,提出适当延长杉木人工林轮伐期和缩短湿地松人工林轮伐期对土壤肥力和有机碳库功能保持具有现实意义。
Taking the Cuninghamia lanceolata and Pinus eUiottii plantations at different development stages in the mid-subtropics of China as test objects, and with the secondary evergreen broadleaved forest as the control, their soil organic matter, total nitrogen and ph6sphorus, and available nitrogen, phosphorus, and potassium contents were analyzed. Comparing with secondary evergreen broadleaved forest, the C. lanceolata and P. elliottii plantations had lower contents of soil organic matter and total nitrogen and phosphorus. These contents increased with increasing age of C. lanceolata but decreased with increasing age of P. elliottii, and the changes in soil total phosphorus content were more smoothly than those in soil organic matter and total nitrogen con- tents. Soil available nutrient contents showed the same variation trends, but the soil available nitrogen and potassium contents were lower in 10 and 20 year-old than in 30 year-old C. lanceolata while in adverse for P. elliottii. From the viewpoint of the eco-environmental effects of soil quality evolvement, to properly prolong the rotation period of C. lanceolata and shorten the rotation period of P. elliottii would be of practical significance in maintaining soil fertility and soil organic carbon sink.