摘要
林地作为一种重要的自然资源和生态因子在区域发展和环境保护中发挥了重要保障作用,及时获取空间分布特征和变化信息对林地资源保护和开发具有重要的意义。在2000—2015年安徽省林业遥感调查数据的基础上,完成了安徽省2000、2005、2010、2015年4期林地遥感制图和时空分析,并从时间序列和空间尺度上探讨了2000年以来安徽省林地资源的分布特征、时空动态及其主要驱动力要素。结果表明:在时间上,近15年来安徽省林地面积总体上呈下降趋势。在空间上,安徽省林地地区分布不均,空间分布差异性较大,集中分布在皖南地区,沿江丘陵和淮北平原林地比重较少。林地变化活跃区集中在年均气温15—18℃,降水量1000—2000 mm,坡度小于15°、高程低于500m的地方。在变化原因上,自然因素影响了安徽林地的总体空间分布特征,但是短期内政策调控、经济发展是林地时空变化的主要驱动因子。
Forestland,an important natural resource and ecological factor,plays a vital and protective role in regional development and environmental protection.It is essential for the protection and development of forestland resources and to obtain spatial distribution features and information regarding changes over time.Using forestry survey data,we conducted remote sensing mapping and spatiotemporal analyses for four time periods(years 2000,2005,2010,and 2015)in Anhui Province.Till date,the distribution characteristics,the spatiotemporal dynamic changes,and the major driving factors of forestland resources in Anhui from 2000 onward have been discussed from the perspectives of time sequence and space scale.The findings indicate that over time,the gross areas of forestland in Anhui Province have been decreasing since the past 15 years.In terms of spatial scale,the distribution of forestland is uneven with a fairly large difference.Areas in southern Anhui are dense with forests;however,hills along the Yangtze River and the Huaibei Plain share much less of such resources.Regions with active changes were primarily found in areas with the following traits:mean annual temperature of 15°C—18℃,mean annual precipitation of 1000 mm—2000 mm;the slope less than 15°,the elevation less than 500 m.From the perspective of changing reason,although natural factors have affected the overall spatial distribution features in Anhui Province,short-term policy adjustment and economic boom are primary driving factors responsible for the temporal and spatial changes in forestland.
作者
邵亚奎
朱长明
徐新良
张新
沈谦
SHAO Yakui;ZHU Changming;XU Xinliang;ZHANG Xin;SHEN Qian(College of Geography and Geomatics,Jiangsu Normal University,Jiangsu Xuzhou 221116,China;State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China.;State Key Laboratory of Remote Sensing Science,Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing 100101,China)
出处
《生态科学》
CSCD
2019年第6期15-21,共7页
Ecological Science
基金
国家重点研发计划项目资助(2017YFB0504201)
国家自然科学基金(61473286,41201460)
中国科学院A类战略性先导科技专项资助(XDA20020101)
江苏省研究生创新计划项目(KYCX17_1691/2)
江苏师范大学创新项目(2019XKT041)
关键词
安徽林地
遥感调查
制图分析
时空变化
驱动因素
forestland in Anhui Province
remote sensing survey
mapping and analysis
temporal and spatial variation
attribution analysis
