[1]贾文雄,陈京华.1982-2014年祁连山植被生长季NDVI变化及其对气候的响应[J].水土保持研究,2018,25(02):264-268.
　JIA Wenxiong,CHEN Jinghua.Variations of NDVI and Its Response to Climate Change in the Growing Season of Vegetation in Qilianshan Mountains from 1982 to 2014[J].Research of Soil and Water Conservation,2018,25(02):264-268.
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1982-2014年祁连山植被生长季NDVI变化及其对气候的响应

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 25 期数: 2018年02期 页码: 264-268 栏目: 出版日期: 2018-04-03
Title:
Variations of NDVI and Its Response to Climate Change in the Growing Season of Vegetation in Qilianshan Mountains from 1982 to 2014
作者:
贾文雄, 陈京华
西北师范大学 地理与环境科学学院, 兰州 730070
Author(s):
JIA Wenxiong, CHEN Jinghua
College of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China
关键词:
NDVI; 生长季; 植被覆盖; 祁连山
Keywords:
NDVI; growing season; vegetation cover; Qilianshan Mountains
分类号:
P463.2
摘要:
祁连山是西北地区重要的生态功能区和河西绿洲的水源涵养地，全面了解植被的生长变化有助于制定合理的气候变化对策。利用1982-1999年的GIMMS NDVI数据和2000-2014年的MODIS NDVI数据，采用最大值合成法、均值法、斜率法、相关分析法等，对祁连山近35年生长季植被变化及其对气候变化的响应进行了深入研究。结果表明：1982-2014年，祁连山植被NDVI整体呈增加趋势，但变化趋势并不明显；近35年，祁连山植被NDVI呈增加趋势的面积比呈降低趋势的面积大，表明植被覆盖状况有所改善，植被NDVI增加的区域集中于中西部，而植被NDVI降低的区域集中于东部；气候的年际变化对祁连山植被NDVI有一定的影响，植被NDVI对气温和降水存在一定的滞后性响应。气温升高和降水增加有助于祁连山植被覆盖增加，生态环境得到改善。
Abstract:
Qilianshan Mountains is one of the most important ecological function areas in northwest China and the water conservation area of Hexi oasis. Understanding the growth and variation of vegetation is helpful to formulate reasonable strategies of climate change. Using the date of GIMMS NDVI from 1982 to 1999 and MODIS NDVI from 2000 to 2014, the variations of vegetation in growing season and its response to climate change were studied in Qilianshan Mountains nearly 35 years by the maximum synthesis method, average method, slope method, correlation analysis method. The results showed that vegetation NDVI appeared an increasing trend in Qilianshan Mountains from 1982 to 2014, but it was not obvious. The area of increasing rate of vegetation NDVI was larger than its decreasing rate, which indicates that the vegetation cover of Qilianshan Mountains had been improved in the past 35 years. The regions of vegetation NDVI increase concentrated in the Midwest, but the decreased regions was in the eastern Qilianshan Mountains. The inter-annual change of climate has some influences on the vegetation NDVI in Qilianshan Mountains, and the vegetation NDVI has a certain lag response to temperature and precipitation. The increases of temperature and precipitation are helpful to the increase of vegetation coverage, so as to improve the ecological environment in the Qilianshan Mountains.

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备注/Memo

收稿日期:2016-11-29;改回日期:2017-1-20。
基金项目:国家自然科学基金“祁连山植被变化及其对气候响应的敏感性研究”（41161017）
作者简介:贾文雄(1974-),男,甘肃渭源人,博士,副教授,主要从事气候变化与生态水文研究。E-mail:wxjiaxy@163.com

更新日期/Last Update: 1900-01-01