气候变化对渭河流域自然植被净初级生产力的影响研究(Ⅱ)——渭河流域自然植被净初级生产力的研究 | |
蒋冲 ; 王飞 ; 穆兴民 ; 李锐 | |
刊名 | 干旱区资源与环境
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2013 | |
卷号 | 27期号:05页码:53-05 |
关键词 | 渭河流域 Wei river basin 气候变化 climate change 自然植被 natural vegetation 净初级生产力(NPP) net primary productivity ( NPP) 湿润指数 humid index |
其他题名 | Effect of climate change on net primary productivity ( NPP) of natural vegetation |
中文摘要 | 利用渭河流域及其周边地区52个气象站1959~2010年的逐日气象资料,采用周广胜-张新时模型、Penman-Monteith模型、气候倾向率、相关分析和Spline插值等方法,分析了近52年湿润指数的时空变化特征及其对NPP(自然植被净第一性生产力)的影响,并对未来不同的气候变化情景下NPP对气候变化的可能响应进行预估。结果表明:NPP高值区位于秦岭山区、关中部分地区、子午岭、六盘山和华山地区,总体呈下降趋势(P>0.1),仅个别站点微弱上升;NPP与降水、相对湿度和湿润指数成正相关(P<0.001),与潜在蒸散量、日照时数和气温负相关,温度对于NPP累积起到的作用有限,降水是主要制约因素;不同的气候情景对NPP的模拟表明,温度和降水同时上升的情况下NPP增幅15%以上,仅温度升高而降水不变NPP增加10%左右,温度上升而降水下降导致NPP不升反降,仅个别地区出现小幅上升。 |
英文摘要 | Based on the daily data observed by 52 meteorological stations from 1959 to 2010,NPP values were calculated using Zhou Guangsheng and Zhang Xinshi model,the spatiotemporal variation of humid index,NPP and their relations were analyzed using linear regression,correlation analysis and Spline spatial interpolation method. The response of NPP to the change of annual temperature and precipitation in the future was discussed. The main results were as follows: NPP was larger in Qin Mountain,Ziwu Mountain,and Hua Mountain. NPP of the whole basin was decreasing while a few stations presented a slight increasing trend. The trend rate of NPP in southern part was bigger than northern part. NPP correlated positively with humid index and precipitation,while correlated negatively with potential evaportranspiration,sunshine duration and temperature. Temperature has limited impact on accumulation of NPP,water was the main factor; ③The result of prediction demonstrated that under the scenarios of temperature increases of 2℃ and precipitation increases of 20% or 0%,NPP will be increased by approximately 15% and 10% respectively. Once the annual precipitation decreased by 20% the NPP will also decrease,only a few stations show insignificant increasement. |
语种 | 中文 |
公开日期 | 2014-10-20 |
内容类型 | 期刊论文 |
源URL | [http://ir.iswc.ac.cn/handle/361005/5539] ![]() |
专题 | 水土保持研究所_水保所知识产出(1956-2013) |
推荐引用方式 GB/T 7714 | 蒋冲,王飞,穆兴民,等. 气候变化对渭河流域自然植被净初级生产力的影响研究(Ⅱ)——渭河流域自然植被净初级生产力的研究[J]. 干旱区资源与环境,2013,27(05):53-05. |
APA | 蒋冲,王飞,穆兴民,&李锐.(2013).气候变化对渭河流域自然植被净初级生产力的影响研究(Ⅱ)——渭河流域自然植被净初级生产力的研究.干旱区资源与环境,27(05),53-05. |
MLA | 蒋冲,et al."气候变化对渭河流域自然植被净初级生产力的影响研究(Ⅱ)——渭河流域自然植被净初级生产力的研究".干旱区资源与环境 27.05(2013):53-05. |
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