中国农业气象

• 论文 • 上一篇    下一篇

基于GIS和RS的咸阳市林地资源变化及飞播造林成效分析

徐军昶;卫海燕;王勇;赵奕兵;尚小宁;董晓文;   

  1. 陕西师范大学旅游与环境学院;陕西省咸阳市气象局;陕西省咸阳市农业气象科学研究所;
  • 出版日期:2008-08-10 发布日期:2008-08-10
  • 基金资助:
    陕西省科技计划项目“气象因子对咸阳市人工林木生长作用的综合研究”(2007K01-11-7)

Analysis of Forest Resources Changes and Effectiveness of Aerial Seeding in Xianyang City Based on GIS and RS

XU Jun-chang1,2,WEI Hai-yan1,WANG Yong2,ZHAO Yi-bing2,Shang Xiao-ning3,Dong Xiao-wen2(1.College of Tourism and Environment,Shaanxi Normal University,Xi'an 710062,China;2.Xianyang Meteorological Bureau,Xianyang 712000,China;3.Institute of Agro-meteorological Science of Xianyang City,Xianyang 712000,China)   

  • Online:2008-08-10 Published:2008-08-10

摘要: 利用1988年TM影像、2007年CBERS影像和1988-2007年NOAA AVHRR的NDVI数据集资料,采用GIS和RS软件分析了近20 a咸阳市林地资源变化,并研究了咸阳市自1992年来飞播造林的成效。结果表明:经过多年的人工植树造林、封山育林、退耕还林,咸阳市森林覆盖率有了明显的提高;飞播造林区的林地类型变化与飞播造林有着很强的相关性,主要飞播造林区的NDVI值总体呈上升趋势,飞播造林对提高咸阳市森林覆盖率起到了很大的作用。

关键词: 林地资源变化, 飞播造林, 成效分析, NDVI

Abstract: Changes of forest resources in Xianyang City in recent 20 years and the effectiveness of aerial seeding in Xianyang City since 1992 were analyzed by using TM images of 1988,CBERS images of 2007 and NOAA AVHRR NDVI data from 1988 to 2007,based on the GIS and RS.The results showed that the forest coverage rate in Xianyang City had been significantly improved,after many years' artificial forestation,closing hillsides to facilitate forestation,and returning farmland to forests.The changes of forest types in the district of aerial seeding had a strong correlation with aerial seeding,and the NDVI value of main areas of aerial seeding had uptrend as a whole.The aerial seeding had a great effect on improving forest cover in Xianyang City.

Key words: Changes of forest resources, Changes of forest resources, Aerial seeding, Analysis of effectiveness, NDVI