地理研究 ›› 2016, Vol. 35 ›› Issue (2): 271-284.doi: 10.11821/dlyj201602006
郭灵辉1(), 郝成元1(
), 吴绍洪2,3, 赵东升2,3, 高江波2,3
收稿日期:
2015-07-16
修回日期:
2015-12-08
出版日期:
2016-02-20
发布日期:
2016-03-07
作者简介:
作者简介:郭灵辉(1983- ),男,河南宜阳人,博士,主要从事气候变化与生态系统风险评估研究。E-mail:
基金资助:
Linghui GUO1(), Chengyuan HAO1(
), Shaohong WU2,3, Dongsheng ZHAO2,3, Jiangbo GAO2,3
Received:
2015-07-16
Revised:
2015-12-08
Online:
2016-02-20
Published:
2016-03-07
摘要:
气候变化及其对植被净初级生产力的影响是全球变化研究的核心内容之一。基于空间化的CENTURY生物过程模型,分析1981-2010年内蒙古草地净初级生产力(NPP)的时空演变规律及其对关键气候因子的敏感性特征。结果表明:近30年内蒙古草地大部分区域NPP呈下降态势但趋势并不显著,全区平均降速约为1.17 g C/m2·a;NPP年代际变化时空差异较大,1980s至1990s约69.65%的区域NPP下降,1990s至2000s NPP下降加剧,下降面积较前者扩大了17.50%;NPP对降水与温度的敏感性特征空间异质性较强,但总体上区域降水减少可能是近30年内蒙古草地NPP下降的主要因素,温度升高同样会导致草地NPP下降,但作用程度较小。
郭灵辉, 郝成元, 吴绍洪, 赵东升, 高江波. 内蒙古草地NPP变化特征及其对气候变化敏感性的CENTURY模拟研究[J]. 地理研究, 2016, 35(2): 271-284.
Linghui GUO, Chengyuan HAO, Shaohong WU, Dongsheng ZHAO, Jiangbo GAO. Analysis of changes in net primary productivity and its susceptibility to climate change of Inner Mongolian grasslands using the CENTURY model[J]. GEOGRAPHICAL RESEARCH, 2016, 35(2): 271-284.
表5
1981-2010年内蒙古草原NPP年代际均值变化幅度比例构成"
草原 类型 | 年代 | 百分比(%) | |||||
---|---|---|---|---|---|---|---|
<-20% | -20%~-10% | -10%~0 | 0~10% | 10%~20% | >20% | ||
荒漠 草原 | 1980s-1990s | 0.22 | 26.72 | 55.21 | 13.55 | 4.08 | 0.22 |
1990s-2000s | 26.78 | 36.20 | 24.46 | 11.29 | 1.27 | ||
典型 草原 | 1980s-1990s | 0.05 | 4.96 | 64.06 | 30.35 | 0.55 | 0.03 |
1990s-2000s | 19.46 | 27.07 | 30.21 | 12.08 | 11.16 | 0.02 | |
草甸 草原 | 1980s-1990s | 4.33 | 49.25 | 38.94 | 7.49 | ||
1990s-2000s | 25.12 | 42.68 | 30.03 | 2.16 | |||
全区 | 1980s-1990s | 0.08 | 9.37 | 60.20 | 28.05 | 2.23 | 0.07 |
1990s-2000s | 21.75 | 31.09 | 29.00 | 10.56 | 7.59 | 0.01 |
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