旅顺口区土地退化分区分级研究

发布时间：2018-07-01 18:58

本文选题：土地退化 + 土地利用　；参考：《中国农业资源与区划》2017年03期

【摘要】：[目的]随着社会经济的高速发展,资源开发规模和强度不断扩大,土地退化的问题也逐渐显现出其弊端。[方法]文章以2003年、2006年、2009年的旅顺口区土地利用数据为基础,运用GIS软件的叠置分析,空间分析对研究区土地退化分区分级研究。通过掌握土地利用变化的数量、时空模式及变化趋势来揭示研究区在不同时期、不同资源开发强度下土地退化的时空特征。[结果]研究表明,研究区的土地退化类型在2003~2009年主要为土地污染、次生盐碱化、草地退化;荒草地和耕地面积在6年间共减少2068.12hm2,耕地土地利用动态度为-2.85%,荒草地土地利用动态度为-2.37%,建设用地土地利用动态度为2.25%,其他未利用地土地利用动态度为6.84%;在不同的研究时期和区域,土地退化的强度不同;根据分区区域面积加权计算,旅顺口区的耕地退化指数小于3,预计土地退化程度属于轻度退化,研究结果可信。[结论]旅顺口区土地退化分区分级研究为今后旅顺口区的社会经济发展战略的决策和生态环境的管理提供了科学依据。
[Abstract]:[objective] with the rapid development of social economy, the scale and intensity of resource development is expanding, and the problem of land degradation has gradually revealed its disadvantages. [methods] based on the data of land use in Lushun area in 2003, 2006 and 2009, the land degradation zoning classification in the study area was studied by using the overlay analysis of GIS software and spatial analysis. The spatial and temporal characteristics of land degradation in different periods and different resource development intensities were revealed by mastering the quantity, temporal and spatial patterns and trends of land use change. [results] the results showed that the main types of land degradation in the study area from 2003 to 2009 were land pollution, secondary salinization and grassland degradation. The area of wasteland and cultivated land decreased by 2068.12hm2 in 6 years, the dynamic degree of land use was -2.85, the dynamic degree of land use of wasteland was -2.37, the dynamic degree of land use of construction land was 2.25, the dynamic degree of land use of other unused land was 6.84. The period and region of research, The intensity of land degradation is different, and the index of farmland degradation is less than 3, and the degree of land degradation is expected to be slightly degraded. The results of the study are reliable. [conclusion] the study of land degradation zoning and classification in Lusunkou District provides scientific basis for the decision of social and economic development strategy and the management of ecological environment in Lushun Kou District in the future.
【作者单位】：辽宁师范大学城市与环境学院;
【基金】：国家自然科学基金面上项目“基于局部土地利用竞争元胞自动机模型的土地利用变化模拟与预测研究”(41471140);国家自然科学基金项目“城市人居拟态环境研究——以大连市为例”(41171137) 2016年国家级大学生创新创业训练计划项目“基于物联网和大数据的城市智慧交通辅助决策系统研究”(201610165071)
【分类号】：S158.1

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