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从浙江省临安市采集了水田及其改雷竹林的4个系列土壤(包括长期种植水稻的农田、水田改种雷竹6年、12和15年的农地)的代表性剖面的分层样品(种雷竹前土壤为发生学分类中的黄泥田,属系统分类的铁聚水耕人为土),采用田间形态观察与室内理化分析相结合的方法对土壤进行了鉴定。结果表明,黄泥田种植雷竹后土壤人为滞水水分状况消失,逐渐向湿润水分状况转变;水耕条件下形成的水耕表层因深耕被破坏而逐渐消失,而水耕氧化还原层的特征可残留在土体中;土壤有机碳和磷素明显积累,土壤中络合态铁显著增加。与此同时,土壤类型也逐渐由普通铁聚水耕人为土向普通铁质湿润雏形土、最后向黄色铝质湿润雏形土演化。结果表明,人为的强烈影响可使土壤类型在短时间尺度内发生改变。
A series of stratified samples were collected from four series of soils (including farmland where rice is planted for a long time, paddy fields are planted for 6 years, fields for 12 and 15 years) of paddy field and its restoration of bamboo forest from Lin’an City, Zhejiang Province. (The former soil for the genus Phyllostachys pubescens in the taxonomy of the yellow muddy field, is a systematic classification of iron polyculture artificial soil), the field of physical observation and physical and chemical analysis of a combination of methods to identify the soil. The results showed that the man-made stagnant water in Huangdi field planted disappeared and gradually changed to the condition of moist water. The hydroponic surface layer formed under hydroponic condition gradually disappeared because of deep plowing, while the characteristic of hydropodic redox layer Remained in the soil; soil organic carbon and phosphorus were significantly accumulated, the soil complexed iron increased significantly. At the same time, the types of soil were gradually changed from ordinary iron hydroponic artificial soil to ordinary iron wet embryo soil, and finally to yellow aluminum wet embryo soil evolution. The results show that man-made strong effects can change soil types within a short time scale.