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Position: Home > Articles > Temporal and Spatial Dynamic Pattern of Grassland Coverage and Its Influencing Factors in China Research of Soil and Water Conservation 2022,29 (2) 221-230+242

中国草地覆盖度时空动态格局及其影响因素

作  者:
刘洋洋;任涵玉;章钊颖;张伟;张志新;巴桑·参木决;王亦波;温仲明
单  位:
南京大学国际地球系统科学研究所;西北农林科技大学草业与草原学院
关键词:
草地覆盖度;不同气候区;气候变化;海拔梯度;坡向梯度
摘  要:
为了探究近几十年来中国草地覆盖度的动态变化,基于多源遥感数据,采用像元二分模型模拟分析了1982—2016年中国草地覆盖度的时空动态格局,并从植被类型、地形要素、气候区及气候变化等角度分析了其主要影响因素。结果表明:35 a间中国草地覆盖度平均值为36.21%,呈极显著增加趋势(0.12%/a)。高山亚高山草甸、坡面草地及湿润地区、半干旱地区草地覆盖度的增加对于中国草地恢复具有重要贡献。草地覆盖度随海拔的升高呈降低趋势,DEM<500 m及3 500 m
译  名:
Temporal and Spatial Dynamic Pattern of Grassland Coverage and Its Influencing Factors in China
作  者:
LIU Yangyang;REN Hanyu;ZHANG Zhaoying;ZHANG Wei;ZHANG Zhixin;BASANG·Canmujue;WANG Yibo;WEN Zhongming;College of Grassland Agriculture, Northwest A&F University;Nanjing Institute of Environmental Sciences, Nanjing University;
关键词:
grassland coverage;;different climatic regions;;climate change;;altitude gradient;;aspect gradient
摘  要:
In order to explore the dynamic changes of grassland coverage in China in recent decades, based on multi-source remote sensing data, we used the pixel dichotomy model to quantitatively calculate the grassland coverage in China from 1982 to 2016, analyzed the temporal and spatial dynamic pattern of grassland coverage in China, and analyzed the influencing factors of grassland coverage from the perspectives of vegetation types, terrain elements, climate regions and climate change. The results showed that the average grassland coverage in China was 36.21% in the past 35 years, showing an extremely significant increase trend(0.12%/a). The increase of grassland coverage in alpine subalpine meadow, slope grassland, humid and semi-arid areas had an important contribution to grassland restoration in China. The increase rate of grassland coverage on DEM<500 m and 3 500 m

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