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)

编号 zgly0001585210

文献类型 期刊论文

文献题名 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)

作者 穆少杰  杨红飞  李建龙  陈奕兆  刚成诚  周伟  居为民 

作者单位 SchoolofLifeScience  NanjingUniversity  InternationalInstituteforEarthSystemScience  NanjingUniversity 

母体文献 Journal of Geographical Sciences 

年卷期 2013年02期

年份 2013 

分类号 P467 

关键词 InnerMongolia  vegetationcoverage  precipitation  temperature  correlation 

文摘内容 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.