气候变化及人类活动对内蒙古中西部植被覆盖变化的影响OA
The Impact of Climate Change and Human Activities on Vegetation Coverage Changes in Central and Western Inner Mongolia
气候变化和人类活动造成的植被变化驱动机制对于生态环境保护和可持续发展有着重要的科学意义,本研究采用趋势分析法、偏相关分析法和Hurst指数分析法探讨2002-2021年NDVI时空变化特征及其对气候变化的响应,结果表明:(1)内蒙古中西部年际NDVI呈波动上升趋势,空间分布上内蒙古中部偏高、西部偏低.(2)利用趋势分析与Hurst指数对NDVI未来变化趋势探究可知,持续增加、由增加转为减少、由减少转为增加、持续减少的区域分别占73.4％、16.0％、1.2％、9.2％.(3)研究区内NDVI与平均气温的平均偏相关系数是0.09,与降水量平均偏相关系数是0.37.(4)气候变化对内蒙古中西部86.72％的区域植被生长起到促进作用;人类活动对内蒙古中西部84.58％的区域植被生长起到促进作用.
The driving mechanism of vegetation change caused by climate change and human activities is of great scientific significance for ecological environment protection and sustainable development.This paper focuses on the spatio-temporal variation of NDVI and its response to climate change dur-ing 2002-2021.The results showed that:(1)Inter-annual NDVI in central and western Inner Mon-golia showed a fluctuating upward trend,and the spatial distribution was higher in central Inner Mon-golia and lower in western Inner Mongolia.(2)Based on trend analysis and Hurst index to explore the future change trend of NDVI,it can be seen that the areas with continuous increase,from increase to decrease,transition from increase to decrease,transition from decrease to increase,and continuous decrease account for 73.4％,16.0％,1.2％,and 9.2％respectively.(3)The average partial correla-tion coefficient between NDVI and average temperature in the study area is 0.09,and the average par-tial correlation coefficient between NDVI and precipitation is 0.37.(4)Climate change promoted vege-tation growth in 86.72％of central and western Inner Mongolia;Human activities promoted vegeta-tion growth in 84.58％of central and western Inner Mongolia.
刘亚娇;张保龙;赵宇新
中国人民解放军61150部队,陕西榆林 719000内蒙古巴彦淖尔市气象局,内蒙古巴彦淖尔 015000
大气科学
内蒙古中西部NDVI植被气候人类活动
Central and western Inner MongoliaNDVIvegetationclimateHuman activity
《陕西林业科技》 2024 (004)
6-11 / 6
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