摘要
为深入了解不同经营模式对土壤理化性质的影响,该文对哈尔滨市丹清河林场近自然经营、传统经营和对照3种经营模式下的天然次生阔叶林土壤理化性质进行了研究。结果表明:天然次生阔叶林土壤物理性质受经营模式的影响较小;与对照相比,近自然经营能显著提高0~40 cm土层土壤全碳、全氮含量;近自然经营和传统经营对提高林地土壤全磷含量有一定的效果;近自然经营林分20~40 cm土层土壤全钾含量显著低于对照;近自然经营显著提高了土壤缓冲性,并显著降低了表层土壤C/N比值。由此可知,近自然经营在一定程度上能够改善天然次生阔叶林土壤化学性质。
In order to understand the influences of management modes on physical and chemical characteristics of soil,we researched the soil physical and chemical characteristics in natural secondary broad-leaved forests of Danqinghe Forest Farm in Harbin,which was managed with three kinds modes,i.e.near-nature management mode,traditional management mode and control.The results indicated that management modes had less influence on physical characteristics of soil in natural secondary broad-leaved forests.Compared with control,near-nature management mode could improve contents of total carbon and total nitrogen in0～40cm soil layer.Near-nature and traditional management modes had a certain effectiveness on increase total phosphorus content.In near-nature management forest,total potassium content in20～40cm soil layer was remarkably lower than that of control.Near-nature management significantly enhanced the soil buffer capacity,and reduced the C/N significantly.In conclusion,near-nature management mode had certain effectiveness on improving soil chemical properties.
作者
杨会侠
YANG Huixia(Forest Management Research Institute of Liaoning Province, Liaodong Peninsula Forest Ecosystem Research Station, Dandong118003, China)
出处
《辽宁林业科技》
2017年第3期1-5,共5页
Liaoning Forestry Science and Technology
基金
林业公益性行业科研专项经费项目(201404303-04)
关键词
森林经营
近自然经营
天然次生阔叶林
土壤理化性质
forest management
near-nature management
natural secondary broad-leaved forest
physical and chemical characteristics of soil
