松花江流域植被净初级生产力时空演变及其与气候因子的响应
Temporal and Spatial Evolution of Net Primary Productivity of Vegetation and its Response to Climate Factors in Songhua River Basin
朱明轩 1赵光影 1高俊雅 1张璐璐 1张宇1
作者信息
- 1. 哈尔滨师范大学地理科学学院,哈尔滨 150025
- 折叠
摘要
基于MOD17A3数据集,结合气候和土地覆被数据,采用趋势分析、稳定性分析、偏相关分析等方法对松花江流域植被NPP进行分析.结果表明,在空间格局上,松花江流域植被NPP均值呈中间低、四周高的分布特征;在时间尺度上,20年间植被NPP呈波动性缓慢上升趋势,平均值峰值出现在2014年,最大值峰值出现在2019年;在变化趋势上,呈增加趋势的地区占总面积的91.28％,降低的区域多出现在城市附近.植被覆盖类型按NPP均值从大到小排列依次为:森林、湿地、农田、草地;从稳定性上看,流域植被变异程度低,整体稳定;选取的气候因子中,气温对植被NPP的影响更为显著.
Abstract
Based on MOD 17A3 data set,and climate and land cover data,the study analyzes the NPP of vegetation in Songhua River Basin with trend analysis,stability analysis and partial correlation analysis.The results show that the mean NPP of vegetation in Songhua River Basin is low in the middle and high in the periphery in spatial pattern;vegetation NPP has shown a fluctuating and slow rising trend in the past 20 years with the average peak in 2014 and the maximum peak in 2019 in time scale;the area with an increasing trend accounts for 91.28％of the total area,and the area with a decreasing trend is mostly near the city in change trend.In order of NPP mean value,the vegetation cover type is forest,wetland,farmland and grassland.From the stability point of view,the vegetation variation degree is low and the whole area is stable.Among the selected climate factors,the influence of air temperature on vegetation NPP is more significant.
关键词
松花江流域/植被净初级生产力/气候因子/时空演变Key words
Songhua River Basin/Net primary productivity of vegetation/Climatic factors/Temporal and spatial evolution引用本文复制引用
出版年
2024
NETL
NSTL
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