西北林学院学报2013，Vol.28Issue(1)：51-57,7.DOI:10.3969/j.issn.1001-7461.2013.01.09
气候变化对陕南汉江流域植被净初级生产力的影响
Effects of Climate Changes on Net Primary Productivity (NPP) of Vegetation in Han River Basin
摘要
Abstract
Based on the temperature and precipitation data observed by 34 meteorological stations within and around Han River Basin between 1959 and 2010, NPP values were calculated by using Zhou Guang-sheng and Zhang Xin-shi Model. The spatio-temporal variations of temperature, precipitation, humid index, NPP and their relationships were analyzed by using correlation analysis, Mann-Kendall test, and Spline spatial interpolation method. The responses of NPP to the variations of temperature and precipitation in the future were discussed. The mam results were as follows. 1) Climate became warmer and drier, the trend rate of temperature was 0. 14℃/(10 a)-1 and the precipitation was -16. 3 mm/(10 a)-1. Abrupt change could be found in 1994 and 1991 respectively. In general,the climate warming rate was larger in northern part than southern part,precipitation decreasing rate distributed unevenly in the whole basin. 2)The NPP was large in Daba Mountain and Micang Mountain, NPP in Qinling Mountains was relatively small, decreased from south to north. NPP in the southern part of Qinling Mountains increased while some part of Hanjiang Valley,Daba Mountain and Micang Mountain decreased. 3) NPP correlated positively with humid index and precipitation,while correlated negatively with potential evaportranspiration,sunshine duration and temper-aturc. Temperature had limited impact on accumulation of NPP,water was the main factor. 4)The result of prediction demonstrated that under the scenario a and b.NPP would increase by about 15% and 9% respectively, while decrease under the scenario c.关键词
汉江流域/气候变化/植被/净初级生产力(NPP)/湿润指数Key words
Han River Basin/climate change/ vegetation/ net primary productivity (NPP):humid index分类
农业科技引用本文复制引用
蒋冲,王飞,穆兴民,李锐..气候变化对陕南汉江流域植被净初级生产力的影响[J].西北林学院学报,2013,28(1):51-57,7.基金项目
国家自然科学基金项目(41171420) （41171420）
中国科学院水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室基金项目(10502-Z12-9) （10502-Z12-9）
中荷联合主题研究项目(中国科学院对外合作重点项目,GJHZ1018,Netherlands Organization for Scientific Research,OND1339291). （中国科学院对外合作重点项目,GJHZ1018,Netherlands Organization for Scientific Research,OND1339291）
