摘要
吉林省长吉产业创新发展示范区位于我国东北地区的地理中心,是实施新一轮东北振兴和吉林省融入国家"一带一路"战略的重要区域。由于农业活动和城市化等的影响,长吉示范区的森林经历了大面积减少和剧烈的破碎化过程。本研究以多源遥感影像Landsat MSS/TM/ETM+、ZY-3为数据源,应用面向对象的遥感影像分类方法,获取5期森林景观和其他景观类型的空间分布数据,分析了1976年~2015年期间长吉示范区森林景观变化特征。结果表明:在过去的近40年里,长吉示范区森林面积减少了20875hm2(减少了22.9%);示范区各森林景观指数的变化表明该区森林景观优势度、聚集度急剧降低,景观破碎度持续加剧。过去的40年间,耕地开垦占用森林面积为26474hm2,占森林景观向其他景观类型转化总面积的92.1%;居住地、采矿场、交通用地和工业用地占用森林面积分别为1069hm2、423hm2、360hm2和180hm2。森林景观变化的驱动因素分析表明,人为干扰是导致研究区森林景观变化的主要原因,自然因素对森林景观变化起到一定的促进作用。在森林景观动态和驱动因素分析的基础上,文中提出了长吉示范区森林保护的建议,为区域生态保护与生态城市建设提供科学借鉴。
The Changchun-Jilin Industry-innovative Development Demonstration Zone located in the geographical center of the Northeast China. It is an important area for a new round revitalization of the northeast and Jilin incorporating into The Belt and Road. The forests in Changchun-Jilin demonstration decreased and got fragmented severely due to frequent farming activities and urbanization. Based on Landsat MSS,TM,ETM ＋,ZY-3 image data and Object-Based Image Analysis（ OBIA）,we analyzed the changes of forest landscape pattern from 1976 to 2015 and driving forces in Changchun-Jilin Demonstration Zone. The results indicated that the area of forestland in the study area decreased by 20875 hm2（ 22. 9% of the total forest area）. The changes of landscape indexes indicated that the dominance of forest reduced and the forests got fragmented severely. About26474 hm2 of forestland were converted in to arable land,occupying 92. 1% of the lost forestland. The area of forestland transformed into settlement,mining land,transportation land and industrial land was 1069 hm2,423 hm2,360 hm2 and 180 hm2,respectively. Our analysis showed that human influence was the major driving factor for forest landscape pattern dynamics and natural factors aided. We put forward some countermeasures to realize the optimization of forest landscape pattern in the study area and contributed great practical and scientific significance to ecological conservation and eco-cities construction in Changchun-Jilin Development Demonstration Zone.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2018年第2期128-135,共8页
Journal of Arid Land Resources and Environment
基金
国家重点研发计划专项课题(2016YFC0500301,2016YFC0500201)
中国科学院野外站联盟项目(KFJ-SW-YW026)资助
关键词
森林景观
遥感
景观破碎化
驱动因素
长吉示范区
forest landscape pattern
remote sensing
landscape fragmentation
driving factor
Changchun -Ji-lin Development Demonstration Zone
