东北地区植被物候期遥感模拟与变化规律

生态学杂志 ›› 2010, Vol. 29 ›› Issue (01): 165-172.

东北地区植被物候期遥感模拟与变化规律

国志兴^1,2,3;张晓宁^2,3,4;王宗明⁵;方伟华^1,2,3**

¹地表过程与资源生态国家重点实验室,北京 100875;²北京师范大学环境演变与自然灾害教育部重点实验室,北京 100875;³民政部/教育部减灾与应急管理研究院,北京 100875;⁴民政部救灾救济司,北京 100721;⁵中国科学院东北地理与农业生态研究所,长春 130012

出版日期:2010-01-08 发布日期:2010-01-08

Simulation and variation pattern of vegetation phenology in Northeast China based on remote sensing.

GUO Zhi-xing^1,2,3;ZHANG Xiao-ning^2,3,4;WANG Zong-ming⁵;FANG Wei-hua^1,2,3

¹State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing 100875, China;²Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, Beijing Normal University, Beijing 100875, China;³Academy of Disaster Reduction and Emergency Management, Ministry of Civil Affairs &|Ministry of Education, the People’s Republic of China, Beijing 100875, China;⁴Department of Disaster Relief, Ministry of Civil Affairs of the People’s Republic of China, Beijing 100721 China|
5Institute of Northeast Geography and Agroecology, Chinese Academy of Sciences,
Changchun 130012, China)

Online:2010-01-08 Published:2010-01-08

摘要/Abstract

摘要： 使用1982—2003年GIMMS-NDVI数据，借助GIS空间分析功能，提取东北地区不同植被NDVI时间序列数据，使用分段式Logistic函数模拟了东北地区不同植被物候期，分析了1982—2003年不同植被物候期的变化趋势。结果表明：针叶林、阔叶林、草丛、草甸和沼泽植被生长季开始日期提前，生长季延长，其中沼泽植被生长季开始日期提前和生长季延长的趋势明显，针叶林次之；结束日期的变化趋势表现不一，针叶林和沼泽植被生长季结束日期推迟，阔叶林、草丛和草甸植被呈现微弱提前趋势；针阔混交林、灌丛、草原和农田植被生长季开始日期推迟，生长季缩短，其中农田植被生长季开始日期推迟和生长季缩短的趋势明显，草原次之；针阔混交林、灌丛、草原和农田4种植被生长季结束日期呈现提前的变化趋势，其中灌丛结束日期的提前趋势明显。

关键词: 热技术, 树干液流, 蒸腾

Abstract: By using 1982-2003 GIMMS-NDVI data and with the help of GIS spatial analysis, the NDVI time-series data of different vegetation types in Northeast China were extracted. In the meantime, the phenological phases of the vegetation types were simulated by Logistic function, with their variation trends in 1982-2003 analyzed. It was shown that the beginning dates of vegetation growth seasons in needleleaf forest, broadleaf forest, grassland, meadow, and swamp were advanced, and the lengths of the growth seasons were prolonged, being more obvious in swamps, followed by in needle-leaf forests. On the contrary, the beginning dates of vegetation growth seasons in needle-leaf and broadleaf mixed forest, shrub, grassland, and farmland were delayed, and the lengths of the growth seasons were shortened, being more obvious in farmland, followed by in grassland. The ending dates of the growth seasons appeared inconsistent, being delayed in needleleaf forest and swamp, slightly advanced in broadleaf forest, grassland, and meadow, and advanced in needle-leaf and broadleaf mixed forest, shrub, grassland, and farmland, especially in shrub.

Key words: Heat technique, Stem sap flow, Transpiration

国志兴;张晓宁;王宗明;方伟华. 东北地区植被物候期遥感模拟与变化规律[J]. 生态学杂志, 2010, 29(01): 165-172.

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