| 内蒙古植被覆盖度的时空动态变化及其与气候因子的关系(英文) |
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| 引用本文： | 穆少杰,杨红飞,李建龙,陈奕兆,刚成诚,周伟,居为民.内蒙古植被覆盖度的时空动态变化及其与气候因子的关系(英文)[J].地理学报(英文版),2013,23(2):231-246. |
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| 作者姓名： | 穆少杰 杨红飞 李建龙 陈奕兆 刚成诚 周伟 居为民 |
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| 作者单位： | School of Life Science,Nanjing University;International Institute for Earth System Science,Nanjing University |
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| 基金项目： | The Key Project of National Basic Research Program of China,No.2010CB950702;China’s High-tech Special Projects,No.2007AA10Z231;APN Project,No.ARCP2011-06CMY-Li |
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| 摘 要： | The vegetation coverage dynamics and its relationship with climate factors on different spatial and temporal scales in Inner Mongolia during 2001-2010 were analyzed based on MODIS-NDVI data and climate data.The results indicated that vegetation coverage in Inner Mongolia showed obvious longitudinal zonality,increasing from west to east across the region with a change rate of 0.2/10°N.During 2001-2010,the mean vegetation coverage was 0.57,0.4 and 0.16 in forest,grassland and desert biome,respectively,exhibiting evident spatial heterogeneities.Totally,vegetation coverage had a slight increasing trend during the study period.Across Inner Mongolia,the area of which the vegetation coverage showed extremely significant and significant increase accounted for 11.25% and 29.13% of the area of whole region,respectively,while the area of which the vegetation coverage showed extremely significant and significant decrease accounted for 7.65% and 26.61%,respectively.On inter-annual time scale,precipitation was the dominant driving force of vegetation coverage for the whole region.On inter-monthly scale,the change of vegetation coverage was consistent with both the change of temperature and precipitation,implying that the vegetation growth within a year is more sensitive to the combined effects of water and heat rather than either single climate factor.The vegetation coverage in forest biome was mainly driven by temperature on both inter-annual and inter-monthly scales,while that in desert biome was mainly influenced by precipitation on both the two temporal scales.In grassland biome,the yearly vegetation coverage had a better correlation with precipitation,while the monthly vegetation coverage was influenced by both temperature and precipitation.In grassland biome,the impacts of precipitation on monthly vegetation coverage showed time-delay effects.
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| 关 键 词： | 植被覆盖度 内蒙古地区 气候因子 时空动态 年际时间尺度 蒙古国 生物群落 中国 |
Spatio-temporal dynamics of vegetation coverage and its relationship with climate factors in Inner Mongolia, China |
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| Shaojie Mu,Hongfei Yang,Jianlong Li,Yizhao Chen,Chengcheng Gang,Wei Zhou,Weimin Ju.Spatio-temporal dynamics of vegetation coverage and its relationship with climate factors in Inner Mongolia, China[J].Journal of Geographical Sciences,2013,23(2):231-246. |
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| Authors: | Shaojie Mu Hongfei Yang Jianlong Li Yizhao Chen Chengcheng Gang Wei Zhou Weimin Ju |
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| Institution: | 1. School of Life Science, Nanjing University, Nanjing, 210093, China
2. International Institute for Earth System Science, Nanjing University, Nanjing, 210093, China
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| Abstract: | The vegetation coverage dynamics and its relationship with climate factors on different spatial and temporal scales in Inner Mongolia during 2001–2010 were analyzed based on MODIS-NDVI data and climate data. The results indicated that vegetation coverage in Inner Mongolia showed obvious longitudinal zonality, increasing from west to east across the region with a change rate of 0.2/10°N. During 2001–2010, the mean vegetation coverage was 0.57, 0.4 and 0.16 in forest, grassland and desert biome, respectively, exhibiting evident spatial heterogeneities. Totally, vegetation coverage had a slight increasing trend during the study period. Across Inner Mongolia, the area of which the vegetation coverage showed extremely significant and significant increase accounted for 11.25% and 29.13% of the area of whole region, respectively, while the area of which the vegetation coverage showed extremely significant and significant decrease accounted for 7.65% and 26.61%, respectively. On inter-annual time scale, precipitation was the dominant driving force of vegetation coverage for the whole region. On inter-monthly scale, the change of vegetation coverage was consistent with both the change of temperature and precipitation, implying that the vegetation growth within a year is more sensitive to the combined effects of water and heat rather than either single climate factor. The vegetation coverage in forest biome was mainly driven by temperature on both inter-annual and inter-monthly scales, while that in desert biome was mainly influenced by precipitation on both the two temporal scales. In grassland biome, the yearly vegetation coverage had a better correlation with precipitation, while the monthly vegetation coverage was influenced by both temperature and precipitation. In grassland biome, the impacts of precipitation on monthly vegetation coverage showed time-delay effects. |
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| Keywords: | Inner Mongolia vegetation coverage precipitation temperature correlation |
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