生态环境学报2012，Vol.21Issue(1)：7-12,6.
1982-2006年华北植被覆盖变化及其与气候变化的关系
Variation of vegetation coverage and its relationship with climate change in north China from 1982 to 2006
摘要
Abstract
GIMMS NDVI data from 1982 to 2006 were adopted to reflect the time series characteristics of vegetation change in North China. The relationship between vegetation coverage changes and climatic variations from the yearly, seasonal and monthly time scales were analyzed combined with temperature and precipitation data of 85 meteorological sites. The results showed that vegetation coverage change was closely correlated with climatic factors, and the correlations were different on different time scales. Annual average of vegetation change was better correlated with temperature than precipitation. Correlations between seasonal average of vegetation coverage and climatic factors showed that the sensitivity of vegetation growth to hydrothermal condition change was different in different seasons. The sensitivity of vegetation growth to temperature in both spring and autumn was higher than in summer, especially in spring, while that of vegetation growth to rainfall in summer was higher. Correlations between monthly average of vegetation coverage and climatic factors showed that the response of vegetation changes to temperature in April and May was stronger, indicating that the temperature effect occurred in the early stage of vegetation growth. Correlations between NDVI of the current month and precipitation of the month before last were better from June to September, showing a hysteresis response of vegetation growth to rainfall.关键词
气候变化/NDVI/气温/降水/华北地区Key words
climate change/NDVI/temperature/ precipitation/North China分类
农业科技引用本文复制引用
孙艳玲,郭鹏..1982-2006年华北植被覆盖变化及其与气候变化的关系[J].生态环境学报,2012,21(1):7-12,6.基金项目
中国科学院知识创新工程重要方向项目(KZCX2-EW-202) （KZCX2-EW-202）
国家自然科学基金项目(41001022) （41001022）
