1982—2015年长江流域植被覆盖度时空变化分析

doi:10.31497/zrzyxb.20171056

自然资源学报 ›› 2018, Vol. 33 ›› Issue (12): 2084-2097.doi: 10.31497/zrzyxb.20171056

1982—2015年长江流域植被覆盖度时空变化分析

张亮^a, 丁明军^{a, b, *}, 张华敏^a, 文超^a

a. 江西师范大学地理与环境学院,南昌 330022;
b. 江西师范大学鄱阳湖湿地与流域教育部重点实验室,南昌 330022

收稿日期:2017-10-11 修回日期:2018-08-24 出版日期:2018-12-20 发布日期:2018-12-20
通讯作者: 丁明军（1979- ）,湖北谷城人,教授,研究方向为土地利用/覆被变化及其与气候变化之间的关系研究。E-mail: dingmingjun1128@163.com
作者简介:张亮（1990- ）,陕西延安人,硕士,研究方向为土地利用/覆被变化研究。E-mail: Zhangliang90628@163.com
基金资助:
国家自然科学基金资助项目（41440004）; 江西省自然科学基金项目（20151BAB203041）; 江西省重大生态安全问题监控协同创新中心资助项目（JXS-EW-00）

Spatiotemporal Variation of the Vegetation Coverage in Yangtze River Basin during 1982-2015

ZHANG Liang^a, DING Ming-jun^{a, b}, ZHANG Hua-min^a, WEN Chao^a

a. School of Geographic and Environment, Ministry of Education, Jiangxi Normal University, Nanchang 330022, China;
b. Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang 330022, China

Received:2017-10-11 Revised:2018-08-24 Online:2018-12-20 Published:2018-12-20
Supported by:
National Natural Science Foundation of China, No. 41440004; National Natural Science Foundation of Jiangxi Province, No. 20151BAB203041; Collaborative Innovation Center for Major Ecological Security Issues of Jiangxi Province and Monitoring Implementation, No. JXS-EW-00

摘要/Abstract

摘要： 量化植被覆盖变化及其与气候变化之间的关系,是当前全球变化和陆地表层生态系统研究领域的热点和难点。论文基于GIMMS-NDVI数据和气象数据,运用趋势分析、突变分析、偏相关分析以及残差分析,探讨长江流域植被覆盖度时空变化特征及其对气候和人类活动干扰的响应机制。结果表明：1）1982—2015年间长江流域除岷-沱江和太湖流域植被覆盖度为下降趋势外,其余均呈上升趋势,呈上升趋势的区域占流域总面积的69.77%,其中45.09%的区域呈显著上升趋势（P<0.1）;2）基于Mann-Kendall突变分析发现,1982—2015年间长江流域植被覆盖度年际变化存在突变现象,且区域差异性显著;3）气温与植被覆盖度的偏相关系数绝对值最大的像元占研究区总面积的43.31%,表明气温是长江流域近30 a植被覆盖度年际变化的主要影响因素;4）人类活动对长江流域植被覆盖度的影响力以持续增强为主,人类活动减弱的区域主要分布在金沙江流域、岷-沱江流域、汉水流域局部区域以及各大省会城市区域。

关键词: 长江流域, 气候变化, 突变, 植被覆盖度

Abstract: Given the indication function of vegetation to climate change in many ways, quantification of vegetation coverage change and its coupling relationship with climate change has become the central topic in current global change and terrestrial ecosystem researches. In the present study, GIMMS (Glaobal Inventory Modelling and Mapping Studies) -NDVI (Normalized Difference Vegetation Index) and meteorological data during 1982-2015 were used to investigate the spatiotemporal change of vegetation coverage and its relationship with climate change and human activities in Yangtze River Basin (YRB) based on trend analysis, mutation analysis, partial correlation analysis and residual analysis. The results showed that: 1) Except for Min and Tuo River Basin, the vegetation coverage in the study area which accounts for 69.77% of the YRB was in rising tendency during 1982-2015, and 45.09% of the rising area it showed a significant increasing trend. 2) Based on the Mann-Kendall mutation analysis, we found that there were mutations of the interannual variation of vegetation coverage in the YRB during 1982-2015, however, there were regional differences of the mutation. 3) The vegetation coverage change was more sensitive to variations of temperature than other influencing factors, which suggests that temperature was the dominant factor affecting the change of vegetation cover in YRB. 4) According to residual analysis, the influence of human activities on vegetation coverage in the YRB is increasingly enhanced. Areas with weakening human activities mainly distributed in the Chin-sha River Basin, Min and Tuo River Basin, Hanshui River Basin and some provincial capital cities.

Key words: climate change, mutation, vegetation coverage, Yangtze River Basin

中图分类号:

Q948.1

张亮, 丁明军, 张华敏, 文超. 1982—2015年长江流域植被覆盖度时空变化分析[J]. 自然资源学报, 2018, 33(12): 2084-2097.

ZHANG Liang, DING Ming-jun, ZHANG Hua-min, WEN Chao. Spatiotemporal Variation of the Vegetation Coverage in Yangtze River Basin during 1982-2015[J]. JOURNAL OF NATURAL RESOURCES, 2018, 33(12): 2084-2097.

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1982—2015年长江流域植被覆盖度时空变化分析

Spatiotemporal Variation of the Vegetation Coverage in Yangtze River Basin during 1982-2015

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