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Reconstructing forest and grassland cover changes in China over the past millennium

文献类型：期刊论文

作者He, Fanneng3; Yang, Fan2; Wang, Yafei1,3
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2024-11-28
卷号N/A
关键词Land use and land cover change Forest Grassland Quantitative reconstruction Gridded reconstruction China historical period
DOI10.1007/s11430-024-1454-4
产权排序1
文献子类Article ; Early Access
英文摘要Historical forest and grassland cover changes not only are critical indicators for quantifying ecological and environmental change processes but also serve as fundamental data for long-term climate change simulations and terrestrial ecosystem carbon emission assessments. However, because of limitations in historical data, quantitative estimations and spatially gridded reconstructions of these changes remain challenging, necessitating further methodological exploration. This study focused on China's present-day land area over the past millennium, objectively capturing the characteristics and drivers of forest and grassland cover changes. On this basis, using the forest transition theory and the space-for-time substitution method, we depicted the historical deforestation process as an inverted S curve and developed a model to reconstruct historical forest area changes based on the functional relationship between the forest area and population size dynamics. Subsequently, a gridded forest allocation model was established on the basis of deforestation tendencies. For the grassland cover, we implemented region-specific methods, such as the cropland area deduction method and the habitat constraint method, to quantitatively reconstruct historical changes. Consequently, we obtained provincial forest and grassland area changes over the past millennium and mapped 10-km-resolution gridded data of forest and grassland cover. The results indicated the following. (1) The methods developed using population data as a proxy objectively reproduced the spatiotemporal evolution of forest and grassland cover in China over the past millennium. These feasible methods offer a novel pathway for the quantitative reconstruction of historical forest and grassland cover changes. (2) The data indicated that China's forest area generally decreased over the past millennium, characterized by a decrease-then-increase pattern. The forest area experienced three distinct phases: a slow decline (AD 1000-1650), a rapid decline (AD 1650-1960), and a gradual recovery (AD 1960-2000). The area decreased from 298 million hectares (Mha) in AD 1000 to 89 Mha in AD 1960 before increasing to 153 Mha in AD 2000. Spatially, deforestation began in the middle-lower reaches of the Yellow River and gradually expanded to the middle-lower reaches of the Yangtze River, the southern coastal areas of China, southwest China, and northeast China, with the forest cover declining by 27%, 40%, 58%, 55%, and 35% in these regions, respectively. (3) China's grassland area has shown a continuous decline over the past millennium with three phases: stable fluctuation (AD 1000-1600), slow decline (AD 1600-1900), and rapid decline (AD 1900-2000). The grassland area decreased from 305 Mha in AD 1000 to 277 Mha in AD 2000. Notably, zonal grassland areas in Northeast China, Inner Mongolia, Gan-Ning, Qinghai, Xinjiang, and Xizang decreased by 28 Mha over the millennium, whereas nonzonal secondary grassland areas in the hilly and mountainous areas of eastern and southern China increased by 0.3 Mha.
WOS关键词LAND-USE ; TRANSFORMATION ; HOLOCENE ; PATTERNS ; HISTORY ; CARBON
WOS研究方向Geology
WOS记录号WOS:001375559500001
源URL[http://ir.igsnrr.ac.cn/handle/311030/210497]  
专题陆地表层格局与模拟院重点实验室_外文论文
通讯作者Yang, Fan
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Henan Univ, Key Res Inst Yellow River Civilizat & Sustainable, Kaifeng 475001, Peoples R China
3.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 He, Fanneng,Yang, Fan,Wang, Yafei. Reconstructing forest and grassland cover changes in China over the past millennium[J]. SCIENCE CHINA-EARTH SCIENCES,2024,N/A.
APA He, Fanneng,Yang, Fan,&Wang, Yafei.(2024).Reconstructing forest and grassland cover changes in China over the past millennium.SCIENCE CHINA-EARTH SCIENCES,N/A.
MLA He, Fanneng,et al."Reconstructing forest and grassland cover changes in China over the past millennium".SCIENCE CHINA-EARTH SCIENCES N/A(2024).

入库方式： OAI收割

来源：地理科学与资源研究所

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