近14年黑河流域甘肃段湿地遥感调查与分析

发布时间：2018-02-28 18:23

本文关键词： 黑河湿地资源遥感监测 GIS 时空变化　出处：《国土资源遥感》2017年03期 　论文类型：期刊论文

【摘要】：以2000年、2008年和2013年获取的TM和ETM遥感图像、地理国情普查数据、水利普查数据和多年统计数据为主要数据源,采用遥感和GIS技术,结合实地调查,对黑河流域甘肃段湿地资源的类型、面积、组成和分布等情况进行了系统研究。结果表明:研究区湿地面积整体呈减少趋势,且2008年前减速较快,2008年后减速明显变缓。湿地资源变化是自然因素和人类活动共同作用的结果。其中,影响该区湿地资源变化的主要自然因素有降水量、气温、上游来水量、下泄量和冻土等;人类因素作为一种外在力量在湿地资源变化中的作用越来越明显,人口数量的变化与人们对土地改造与利用的强度是逐渐改变湿地景观最活跃、最直接的影响因素;政府决策与湿地保护恢复工程则对湿地资源保护起了推动作用。
[Abstract]:Based on the TM and ETM remote sensing images obtained in 2000, 2008 and 2013, the survey data of geographical conditions, the data of water conservancy census and the statistical data of many years were used as the main data sources, and the remote sensing and GIS techniques were used to combine with the field investigation. The types, area, composition and distribution of wetland resources in Gansu section of Heihe River Basin are systematically studied. The results show that the wetland area in the study area is decreasing as a whole. The change of wetland resources is the result of the interaction of natural factors and human activities. Among them, the main natural factors affecting the changes of wetland resources in this area are precipitation, air temperature and upstream water quantity. The human factor, as an external force, plays a more and more important role in wetland resource change, and the change of population and the intensity of land transformation and utilization are the most active changes in wetland landscape. The most direct influencing factors: government decision and wetland conservation and restoration project promote wetland resources protection.
【作者单位】：西北师范大学地理与环境科学学院;甘肃省地图院;甘肃工业职业技术学院;
【基金】：国家自然科学基金重点项目“面向黑河流域生态水文过程集成研究的数据整理与服务”(编号:91025001) 甘肃省地理国情监测项目“黑河流域湿地资源调查与动态监测”(编号:GSGP-2014-24)共同资助
【分类号】：P237

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