北京师范大学学报（自然科学版）2016，Vol.52Issue(5)：571-579,9.DOI:10.16360/j.cnki.jbnuns.2016.05.007
黑河流域NPP对气候变化及人类活动的响应∗
Response of NPP to climate change and human activities in the Heihe River basin
摘要
Abstract
Annual net primary Productivity (NPP)in the Heihe River basin from 1998 to 2007 was estimated on temporal scale of ten-days from Spot VEGETATION NDVI dataset with modified CASA light use efficiency model.Changing tendency of NPP in the Heihe River basin from 1998 to 2007 was analyzed. Response of NPP to climate change for various land cover types in upper,middle and lower reaches was also investigated.Effects of water transfer project in the Heihe River and ecological construction on vegetation NPP change were quantitatively assessed after separating contributions of climate change and human activities.It was found that NPP of vegetated area experienced a significant decrease from 1998 to 2001,but it increased significantly from 2001 to 2007.Year 2001 is the key transition point of NPP change in the last ten years, coinciding with deployment time of water transfer project and ecological construction.During the 5 years (2002-2007)after implementation of water transfer project and ecological construction,the residuals of mean NPP for various land cover types in upper,middle and lower reaches are greater than 0,indicating that water transfer proj ect and ecological construction have had a positive impact on ecosystem.The contribution rate of human activities on NPP in middle,upper and lower reaches was 11.5%,5.29% and 3.23%,respectively.关键词
黑河/植被/NPP/气候变化/人类活动Key words
Heihe River/vegetation/NPP/climate change/human activities分类
资源环境引用本文复制引用
程春晓,徐宗学,张淑荣,王志慧..黑河流域NPP对气候变化及人类活动的响应∗[J].北京师范大学学报（自然科学版）,2016,52(5):571-579,9.基金项目
国家自然科学基金重大计划重点支持资助项目(91125015) （91125015）
