中国典型土地覆盖类型地表反照率的年内变化特征(英文)     

刘正佳  邵全琴  陶健  迟文峰 《地理学报(英文版)》2015,(1):35-44

Surface albedo is a primary causative variable associated with the process of surface energy exchange. Numerous studies have examined diurnal variation of surface albedo at a regional scale; however, few studies have analyzed the intra-annual variations of surface albedo in concurrence with different land cover types. In this study, we amalgamated surface albedo product data(MCD43) from 2001 to 2008, land-use data(in 2000 and 2008) and land cover data(in 2000); quantitative analyses of surface albedo variation pertaining to diverse land cover types and the effect of the presence/absence of ground snow were undertaken. Results indicate that intra-annual surface albedo values exhibit flat Gaussian or triangular distributions depending upon land cover types. During snow-free periods, satellite observed surface albedo associated with the non-growing season was lower than that associated with the growing season. Satellite observed surface albedo during the presence of ground snow period was 2–4 times higher than that observed during snow-free periods. Surface albedo reference values in typical land cover types have been calculated; notably, grassland, cropland and built-up land were associated with higher surface albedo reference values than barren while ground snow was present. Irrespective of land cover types, the lowest surface albedo reference values were associated with forested areas. Proposed reference values may prove extremely useful in diverse research areas, including ecological modeling, land surface process modeling and radiation energy balance applications.  相似文献   

南屯矿区土地利用时空演化分析   总被引：1，自引：0，他引：1  

陶健  徐跃通  丁娟  张学明  何建美 《测绘科学》2010,35(1):182-185

本文利用RS和GIS技术,以南屯矿区为研究对象,在GIS空间分析模块下运用多种数学模型对南屯矿区土地利用/覆盖变化时空演化进行了定量研究,通过综合分析,得出进行采煤活动,首先要进行大规模的基础设施建设;采矿活动严重破坏自然生态景观,矿区原有景观生态破碎化;政府对环境问题日益重视,逐步意识到土地复垦生态重建的紧迫性和生态和谐的重要性。  相似文献   

面向GIS的基础空间数据加工模式的探讨     

张学明  何建美  陶健 《测绘通报》2009,(11)

以济南市1∶500数据整理为对象,利用Geoway软件平台,将一套外业采集数据整理成两套数据成果,为后期的基础地理信息数据入库和数据库的维护、数据修测更新提供一种新的作业思路。  相似文献   

未来气候与海平面变化对海南岛沿岸环境的可能影响     

吕炳全  朱江  陶健 《热带海洋学报》1992,(2)

“温室效应”使全球气温升高和海面上升已引起广泛的关注。本文分析了从现在起到2025年气温和海面升高后,对海南省气候、工农业生产、海岸变迁,沿岸生态环境、近岸资源和旅游事业的发展所带来的影响,并对今后开发海岸带提出若干建议和对策。  相似文献   

内蒙古中部MODIS植被动态监测分析   总被引：12，自引：0，他引：12  

王军邦  陶健  李贵才  庄大方 《地球信息科学学报》2010,12(6):835-842

对中分辨率成像光谱仪(MODIS)250m空间分辨率的每8天NDVI卫星遥感数据,利用年平均NDVI及一元线性回归方法,分析了2000-2008年内蒙古中部地区植被变化趋势。结果表明,近9年内蒙古中部地区79.60%地区的植被总体上保持稳定,17.33%的地区得到了明显改善,3.06%的地区仍存在较强的退化或沙化趋势。退化或沙化地区主要分布在内蒙古农牧交错带北部边缘,成条带状分布,反映了农牧交错带地区生态仍然较为脆弱,需要进一步关注和保护,东南部地区的植被恢复明显。植被年际动态主要受该地区暖干化气候影响,气候变暖造成植被NDVI增加,而降水波动导致NDVI随之变化,降水的作用是气温的2.8倍,有些地区可达到11倍之多。  相似文献