摘要
为了揭示采煤塌陷对土壤性质的影响,为矿区的土地资源保护与恢复提供理论依据,研究了离石双柳煤矿区采煤塌陷坡耕地土壤理化性质的变化。结果表明:(1)土壤物理性黏粒含量随塌陷时间的延长而逐渐减少。(2)土壤毛管孔隙度则随塌陷年限的增加而减小,非毛管孔隙度则增加。(3)土壤容重随塌陷年限的增加而减小,随土层深度的增加而增加。(4)土壤田间持水量随塌陷年限的延长而逐渐减少。(5)土壤有机质、碱解氮、速效磷含量随塌陷时间的延长而逐渐降低。这反映出采煤塌陷破坏了土壤结构,促进了土壤淋溶侵蚀,使得土壤理化性质恶化,需要引起关注。
The objective of this study was to reveal the influence of mining subsidence on soil properties and provide theories for the protection and recovery of soil resources.The physical and chemical properties of soil in sunken slope land in Shuangliu mining area in Lishi were studied in the present research.The result shows：（1） Physical clay content in sunken areas is gradually decreased with the number of years.（2） Soil capillary porosity in sunken areas is decreased with the number of years.However,soil non-capillary porosity is gradually increased.（3） Soil bulk density in sunken areas is decreased with the number of years and increased with soil depth（0-40 cm）.（4） Field water-holding capacity in sunken areas is decreased with the number of years.（5） Soil organic matter,alkali hydrolysable N and effective-P are gradually decreased.In contrast,soil effective-K is slightly increased.In conclusion,mining subsidence destroys soil structure,promotes soil leaching and deteriorates the physical and chemical properties of soil.
出处
《土壤通报》
CAS
CSCD
北大核心
2010年第5期1237-1240,共4页
Chinese Journal of Soil Science
基金
山西省科技攻关项目(041017)资助
关键词
矿区
采煤塌陷
坡耕地
土壤理化性质
Mining area
Mining subsidence
Slope land
Physical and chemical properties of soil
