干旱地区农业研究2012，Vol.30Issue(1)：246-252,264,8.
黄河源地区植被净初级生产力对气候变化的响应
Responses of net primary productivity of natural vegetation to climatic changes in the source region of the Yellow River
摘要
Abstract
Based on observational climatic data of monthly average temperature, maximum temperature, minimum temperature, relative humidity, precipitation, wind speed and sunshine duration in the source region of Yellow River in 1959-2008, the net primary productivity ( NPP) for 50 years was computed with the application of revised Thornthwaite Memorial Model. In addition, the inter-annual change and the seasonal difference of NPP were analyzed, and the re-sponses of net primary productivity to climatic changes was discussed as well. The main results were as follows: In 1959-2008, the annual NPP in this region had an increasing trend, with a linear fitting rate of annual NPP change curves being 95.502 ~ 190.72 kg/(hm2- 10a) , the NPP appeared a high rate mostly after 1990s. The cold and dry cli-mate occurred in the 1970s, the NPP of which was 1.1% ~ 2.1 % less than the annual average NPP; and the warm and wet climate appeared in 2001-2008, the NPP of which was 1.1% -2.1% more than the annual average NPP. The main factors which influenced the NPP were precipitation, maximum evapotranspiration and average minimum tempera-ture . The warm and wet climate benefited the growth of the NPP with an average increment of yield by 5.5% ~8.5% in the source region of the Yellow River, while the cold and dry climate had an adverse impact on NPP with an average re-duction of yield by 5 % - 9 % . If the future climate in the region would become warm and moist, the NPP could increase by 7%~17% in 2050.关键词
净初级生产力/气候变化/响应/黄河源区Key words
net primary productivity/ climate change/ response/ the source region of the Yellow River分类
天文与地球科学引用本文复制引用
姚玉璧,杨金虎,王润元,岳平,陆登荣,杨建军..黄河源地区植被净初级生产力对气候变化的响应[J].干旱地区农业研究,2012,30(1):246-252,264,8.基金项目
国家重大科学研究计划(2012CB955304) （2012CB955304）
国家公益性行业(气象)科研专项(GYHY201106029、GYHY200806021) （气象）
中国气象局气候变化专项(280200S011C00) （280200S011C00）
国家自然科学基金重点项目(40830957) （40830957）
甘肃省气象局第五批"十人计划"项目 （）
于旱气象科学研究基金项目(IAM201111) （IAM201111）
