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标题

内蒙古温带典型草原物候期的变化研究

作者

刘红海 王 宏 李晓兵 迟登凯 喻 峰

机构

北京师范大学地表过程与资源生态国家重点实验室, 北京师范大学资源学院; 国土资源部信息中心

摘要

将不同函数方法拟合后的植被指数时间序列数据比较, 选出最佳拟合方法拟合了锡林郭勒盟典型草原 1990—2008 年中14a的物候期和生长季长度, 研究它们的时空变异规律. 结果表明: 1) 返青期和枯黄期在空 间上大体呈现从锡林郭勒盟东北到西南地区逐渐推后的趋势, 在时间上, 不同年份草原物候期变化程度不同; 2) 拟合锡林郭勒盟 典型草原14a的平均物候期和生长季长度, 发现返青期、枯黄期、生长季长度分别集中在 110~150 、300~320 、190~200 d , 分别为提前、提前、缩短的趋势占优势; 3) 7 年返青期观测值与拟合值差值平均值约为-4d , 总体拟合效果较好.

关键词

城市交通; 公共自行车系统; 配车量优化

引用

刘红海 王 宏 李晓兵 迟登凯 喻 峰. 内蒙古温带典型草原物候期的变化研究 [J]. 北京师范大学学报(自然科学版),2016,52(4)512-517.

基金

国家自然科学基金资助项目(41471350) ; 国家重点基础研究发展计划资助项目(2014CB138803) ; 国家创新团队计划资助项目(41321001) ; 地表过程与资源生态国家重点实验室资助项目

分类号

Q948.118

DOI

10.16360/j.cnki.jbnuns.2016.04.019

Title

Monitoring phenological phase of typical temperate steppe in Inner Mongolia

Author

LIU Honghai, WANG Hong, LI Xiaobing, CHI Dengkai, YU Feng

Affiliations

State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Resources Science and Technology, Beijing Normal University; Information Center of Ministry of Land and Resources of People’s Republic of China

Abstract

Different vegetation index timing curves were compared to choose the best fit for phenological phase and length of vegetation season from 1990 to 2008 and to analyze temporal spatial characteristics . The beginning and ending of vegetation season were found to show gradual delays from Southwest to Northeast regions , with some variations in different years . Fitted typical grassl and average phenophase and length of vegetation season in Xilingole indicated that beginning of vegetation season still showed delays from Southwest to Northeast regions. The beginning and ending of vegetation season and length of vegetation season was concentrated in 110~150 days , 300~320 days and 190~200 days respectively , variations were advanced , advanced and shortened respectively . The difference of measured and fitted values for the beginning of vegetation season in the seven year study period was - 4 days with very good overall fit .

Key words

NDVI ; beginning of vegetation season ; ending of vegetation season ; length of vegetation season ; typical steppe

cite

LIU Honghai, WANG Hong, LI Xiaobing, CHI Dengkai, YU Feng. Monitoring phenological phase of typical temperate steppe in Inner Mongolia [J]. Journal of Beijing Normal University (Natural Science), 2016,52(4):512-517.

DOI

10.16360/j.cnki.jbnuns.2016.04.019

Copyright © 2014 Journal of Beijing Normal University (Natural Science)
Designed by Mr. Sun Chumin. Email: cmsun@mail.bnu.edu.cn