中国水土保持科学2012，Vol.10Issue(6)：45-51,7.
气候变化对秦岭南北植被净初级生产力的影响(Ⅱ)——近52年秦岭南北植被净初级生产力
Effects of climate change on net primary productivity of vegetation in the northern and southern regions of the Qinling Mountains(Ⅱ) :Net primary productivity of vegetation in recent 52 a
摘要
Abstract
Based on the daily data from 54 meteorological stations in Northern and Southern Regions of the Qinling Mountains between 1960 and 2011, with the help of Zhou Guangsheng-Zhang Xinshi Model, Penman-Monteith Model, climate trend rate, correlation analysis and Spline interpolation method, the climate change in the northern and southern region of the Qinling Mountains during last 52 a and its effect on Net Primary Productivity (NPP) as well as the variation of NPP in different scenarios were analyzed. The results showed that; 1) According to the size of NPP, NPP increased from north to south gradually, and the order was given as Ba-Wu Valley, Han River Basin, the southern slope and northern region of Qinling Mountains. According to the percent of NPP increasing stations accounted for the total stations, the sub regions had different change trend with the order of Han River Basin, Ba-Wu Valley, southern slope and northern region of Qinling Mountains. The extreme ratio of inter-annual variability of NPP in ecological regions were not very big, ranging from 1. 34 to 1. 89. 2) Humid index, precipitation and humid index correlated positively with NPP, which reached 0. 01 significant level. According to the size of correlation coefficient, the order was given as humid index, precipitation and relative humid. The increase of precipitation would promote accumulation of NPP, which indicated that water was the main restricting factors. 3 ) Water use efficiency of vegetation decreased from south to north with the order Ba-Wu Valley, Han River Basin, southern slope and northern region of Qinling Mountains. Most of the area had insignificant upward trend, and in last 52 a, water use efficiency increased insignificantly and maintained at stable level.关键词
气候变化/植被净初级生产力/水分利用效率/秦岭南北Key words
climate change/ NPP ( net primary productivity) / water use efficiency/ the northern and southern regions of the Qinling Mountains引用本文复制引用
蒋冲,王飞,穆兴民,李锐..气候变化对秦岭南北植被净初级生产力的影响(Ⅱ)——近52年秦岭南北植被净初级生产力[J].中国水土保持科学,2012,10(6):45-51,7.基金项目
国家自然科学基金"基于相同气候条件的人类活动对河流水沙影响定量评价——以黄土高原延河流域为例"(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"北方旱区表层土壤水分遥感监测试验研究"(10502-Z12-9) （10502-Z12-9）
中荷联合主题研究项目"渭河流域水环境问题综合治理对策研究"(GJHZ1018) （GJHZ1018）
