THE INFLUENCE OF MESOZOIC AND CENOZOIC GEOLOGIC PROCESS TO THE CTATE OF REGIONAL LAND RESOURCES IN WESTERN LIAONING PROVINCE
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摘要: 中、新生代地质作用对辽西地区土地资源状况有着重要影响.其一,地质作用决定了土地资源自然状况:构造岩浆活动、区域造山动力等地质作用决定了区域地貌特征及土地资源的空间分布格局;风化作用、河流地质作用形成了不同类型的成土母质,决定了土层结构类型、土壤理化性质等土地资源的物质特征.其二,地质作用在很大程度上影响着土地资源的演化趋势:风、流水、重力等地质作用一直以不同的方式和程度改变着土地资源状况——在人类活动的参与下这种改变正愈演愈烈,如荒漠化、山体滑坡、泥石流、水土流失等.正确认识并科学分析这类地区地质作用与土地资源状况的关系,对于合理利用并有效保护土地资源具有重要意义.Abstract: From two aspects the authors discuss the influence of Mesozoic and Cenozoic geologic process to the state of regional lan d resources in the west part of Liaoning Province. On one hand, the geologic process controls the natural state of regional lan d resources, e.g., the characteristics of land form is resulted from the tectono-magmatic activity and orogenesis.The weathering and fluvial process form kinds of soil-forming material, different types of land texture and physical-chemical property of soil.On the other hand, the geologic process influence the evolution of land resources, e.g., wind, fluvial water and gravity have been changing the regional land resources, and this change would be more serious with the participation of human action.The desertification, landslide, debris-flow and soil-erosion are all resulted from it.It is of most significant to realize and study the relationship between geologic process and state of land resources in order to utilize and protect the land resources effectively.
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