地理科学 ›› 2008, Vol. 28 ›› Issue (6): 793-798.doi: 10.13249/j.cnki.sgs.2008.06.793

• 论文 • 上一篇    下一篇

冀北地区植被指数变化特征及影响因素分析

陈辉1,2, 刘劲松2, 王卫2   

  1. 1. 国土资源部土地利用重点实验室, 北京 100035;
    2. 河北师范大学 资源与环境科学学院河北省环境演变与生态建设实验室, 河北 石家庄 050016
  • 收稿日期:2008-01-29 修回日期:2008-05-11 出版日期:2008-11-20 发布日期:2008-11-20
  • 通讯作者: 王卫,教授,主要研究方向为土地变化科学与区域地理学。E-mail:wangwei@mail.hebtu.edu.cn E-mail:王卫, wangwei@mail.hebtu.edu.cn
  • 作者简介:陈辉(1972- ),女,满族,河北承德人,博士,副教授,主要从事综合自然地理学、生态学研究。E-mail:chenhui720127@163.com
  • 基金资助:
    国土资源部土地利用重点实验室开放基金(07-06)、"十一五"国家科技支撑计划重点项目(2006BAB15B02-04)、河北省气象与生态环境实验室科研开发开放项目(SYSKF0603);河北省教育厅软科学项目(2006206)联合资助。

Spatial Characteristic and Influencing Factors of Vegetation Change in north of Hebei Province

CHEN Hui1,2, LIU Jin-song2, WANG Wei2   

  1. 1. Key Laboratory of Land Use, China Land Surveying and Planning Institute, Ministry of Land and Resources, Beijing 100035;
    2. Hebei Key Laboratory of Environmental Change and Ecological Construction, College of Resources and Environment Sciences, Hebei Normal University, Shijiazhuang, Hebei 050016
  • Received:2008-01-29 Revised:2008-05-11 Online:2008-11-20 Published:2008-11-20

摘要: 利用8km分辨率的NOVV/AVHRR NDV I数据、土地利用/覆被变化TM影像解译数据、气候数据、DEM数据和经济统计数据,对冀北地区1987~2000年植被覆被变化特征及影响因素进行了分析,得出主要结论如下:冀北地区土地覆被变化下NDVI平均增加值为0.35,变化特征为集中连片。土地利用变化导致NDVI平均减小值为0.17,变化特征呈斑块状离散分布。土地利用类型变化、错季蔬菜生产等人为因素对土地覆被变化下NDVI变化贡献率较低,降水、特别是生长季降水分布特征是影响NDVI变化的重要因素。

Abstract: The study area is located in the north of Hebei Province with a total area of 76 275.6 km2.In recent years, artificial activity changed the land use type and the plant degradation arose the attention of people. This study assessed the trend and spatial-temporal distribution of vegetation index change, which is related with vegetation degradation, in North of Hebei Province using multi-temporal NOAA/AVHRR NDVI data (8 km spatial resolution) from 1987 to 2000 provided by NASA, meteorologic data, DEM data (1:250000) and relative economic data. Results show that the characteristic of NDVI change owing to land cover are concentrative and connective, while the characteristics of NDVI change owing to land use are sparse and scattered. The average change of NDVI is 0.35 for land cover change and the average change of NDVI is -0.17 for land use change and they have contrary change direction. The artificial factors such as the changes of land use or crop type have contribution to NDVI change, but the influence is limited. Precipitation, especially its distribution in growth season is the important influencing factor for NDVI change.

中图分类号: 

  • X87