摘要
该文基于两期时相接近的高分辨率遥感影像数据,利用遥感分类和定量反演技术,提取两期土地利用/土地覆盖(LUCC)信息和对应的地表温度信息,结合山东省莱州湾沿岸近20a来海水入侵研究成果,分析LUCC对地表温度影响的空间格局和变化规律。经研究发现:在海水入侵影响下,研究区域土地覆盖以旱地、盐碱地、建设用地和盐田为主,未利用土地覆盖类型(盐碱地、滩涂)占很高的比例,随着距海的远近,土地利用程度变化显著。在沿海经济发展和LUCC影响下,整个研究区域水面覆盖和植被覆盖面积增加,使研究区域的地表温度降低:研究区域1987年平均地表温度为30.8℃,2000年平均地表温度为29.2℃;2000年相对1987年,研究区域的地表温度降低了1.62℃。海水入侵显著地影响了土地覆盖空间格局和变化,土地覆盖的显著变化进而明显地影响了沿海区域地表温度的空间分布和变化,沿海区域的地表温度变化与地表覆盖变化密切相关。该研究可为沿海湿地生态环境保护和滩涂开发提供科学参考。
Based on the nearly two phase TM/ETM remote sensing data, by using extraction of two land use / land cover （LUCC） of information and the corresponding land surface temperature（LST）, combined with research results of seawater intrusion along coast of the Laizhou Bay in Shandong Province over the past 20 years, spatial pattern and variationof impacts of LUCC on LST were analyzed. The study found that under influence of seawater intrusion, the study area of coast of Laizhou bay covered mainly with farmland, saline-alkali land, construction land and salt land, the unused land（ saline-alkali land , beach ） accounted for a high proportion. As the distance from the sea, the degree of land use obviously changed. Under influence of coastal economic development and LUCC, the area increase of water body and vegetation cover led to decrease of LST in study area, the average LST was 30.8℃ in 1987 and 29.2℃ in 2000, the LST in 2000 reduced 1.62℃ against to that in 1987. Seawater intrusion significantly affected the spatial pattern of land cover and changes, LUCC was impacted evidently on the spatial distribution and changes of LST along coastal areas of Laizhou bay. The change of LST is closely related to change of land use. This study would provide scientific reference and basis for decision making for ecological and environmental protection along coastal wetlands and beach land development.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2009年第9期274-281,I0005,共9页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家重点实验室创新团队项目(1088RA400SA)
国家重点基础研究发展规划项目(2006CB403404)
关键词
遥感
地表温度
沿海地带
响应
土地利用
remote sensing, land surface temperature, coastal zones, response, land use
作者简介
高志强（1966-），男，山东滨州人，副研究员，博士，硕士生导师，主要从事遥感应用和生态过程模拟研究。北京中国科学院地理科学与资源研究所，100101。Email：gaozq@igsnrr．ac．cn
通信作者：高炜（1962-），男，安徽明光人，教授，博士生导师，主要从事区域气候和遥感应用研究。上海华东师范大学环境遥感与数据同化实验室，200062。Email：wga0419@gmail．com
