Abstract
Land use change is extremely sensitive to natural factors and human influence in active debris flow. It is therefore necessary to determine the factors that influence land use change. This paper took Wudu District, Gansu Province, China as a study area, and a systemic analysis of the transformational extent and rate of debris flow waste-shoal land (DFWSL) was carried out from 2005 to 2015. The results show that from 2005 to 2015, cultivated land resources transformed to other types of land; cultivated lands mainly transformed to grassland from 2005 to 2010 and construction land from 2010 to 2015. Moreover, the growth rate of construction land from 2005 to 2010 was only 0.11%, but increased to 6.87% between 2010 and 2015. The latter is more than 60 times the former. This increase was brought about by natural disasters (debris flow, earthquakes, and landslides) and anthropogenic factors (national policies or strategies), which acted as driving forces in debris flow area. The former determines the initial use type of the DFWSL while the latter only affects the direction of land use and transformation.
Highlights
Land use is an anthropogenic activity in which the natural characteristics of the land are identified, and bio-technological means are adopted to periodically harness and manage the land for socioeconomic benefits [1]
Studies on LUCC over the past decades have focused on the analysis of factors driving land use, dynamic processes of land use, and the interrelation between land use and land cover changes [4,5,6]
To explore the possibilities of developing unused land in mountainous areas, this study focused on the use of debris flow waste-shoal land (DFWSL), cover changes in mountainous areas, and the driving forces behind these changes
Summary
Land use is an anthropogenic activity in which the natural characteristics of the land are identified, and bio-technological means are adopted to periodically harness and manage the land for socioeconomic benefits [1]. Research has been conducted to understand the following: (1) Change in land cover due to human activities over the past 300 years; (2) anthropogenic factors influencing land use and transformation in different historical stages and geographic units [7,8,9]; (3) impact of land use and transformation on land cover over the 50–100 years [10,11]; (4) impacts of anthropogenic and biophysical factors on the carrying capacities of different land types [12]; and (5) impacts of climate and global biogeochemistry on land use and land cover [13,14]. Farmland will need to increase by 42% and pastures by 15% to meet the growing demands [17] This raises questions about the extent to which technology can help improve the capacity of land, how land can be utilized effectively, and whether current land resources will meet future demands [18]
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