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气候变化对陕南汉江流域植被净初级生产力的影响
其他题名Effects of Climate Changes on Net Primary Productivity(NPP)of Vegetation
蒋冲; 王飞; 穆兴民; 李锐
2013
发表期刊西北林学院学报
卷号28期号:01页码:51-57
摘要根据陕南汉江流域及其周边34个气象站1959-2010年的逐日气温和降水资料,利用周广胜—张新时模型、Penman-Monteith公式、Mann-Kendall检验、相关分析和Spline插值等方法,分析了近52a水热条件的变化及其对净初级生产力(NPP)的影响,并对NPP的未来变化进行预估。结果表明:1)汉江流域年均温为13.7℃,整体呈升高趋势(0.14℃.(10a)-1)(p<0.001),北部快于南部,东部快于西部。多年平均降水为747.3mm,整体呈减少趋势,于1991年发生减少突变;2)NPP高值区位于大巴山区和米仓山部分地区,秦岭山地相对较小,表现出由南向北递减的空间格局。秦岭南麓部分地区NPP上升,汉江谷地除安康外均呈下降趋势,大巴山和米仓山一带除平利、镇坪外均呈现下降趋势。3)NPP与降水、相对湿度和湿润指数呈极显著的正相关关系(p<0.001),与潜在蒸散、日照时数和气温负相关,温度对于NPP积累起到的作用有限,水分是主要制约因素;4)a情景下NPP增幅15%以上,b情景下增加9%左右,c情景下NPP整体下降; Abstract:Based on the temperature and precipitation data observed by 34meteorological stations within and
around Han River Basin between 1959and 2010,NPPvalues 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 main results were as follows.1)Climate became warmer and drier,the trend rate of
temperature was 0.14℃/(10a)-1 and the precipitation was-16.3mm/(10a)-1.Abrupt change could be
found in 1994and 1991respectively.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,NPPin Qinling Mountains was relatively small,decreased from
south to north.NPPin the southern part of Qinling Mountains increased while some part of Hanjiang Valley,
Daba Mountain and Micang Mountain decreased.3)NPPcorrelated positively with humid index and
precipitation,while correlated negatively with potential evaportranspiration,sunshine duration and temper  ature.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 :han river basin 气候变化 Climate change 植被 Vegetation 净初级生产力(Npp) Net primary productivity(npp) 湿润指数 Humid index
语种中文
文献类型期刊论文
条目标识符sbir.nwafu.edu.cn/handle/361005/5599
专题水保所知识产出(1956---)
推荐引用方式
GB/T 7714
蒋冲,王飞,穆兴民,等. 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(01):51-57.
APA 蒋冲,王飞,穆兴民,&李锐.(2013).气候变化对陕南汉江流域植被净初级生产力的影响.西北林学院学报,28(01),51-57.
MLA 蒋冲,et al."气候变化对陕南汉江流域植被净初级生产力的影响".西北林学院学报 28.01(2013):51-57.
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