Land use change has a profound impact on biodiversity and ecological processes, and is closely related to changes in landscape patterns. This paper introduces the theory and method of land economic niche into landscap...Land use change has a profound impact on biodiversity and ecological processes, and is closely related to changes in landscape patterns. This paper introduces the theory and method of land economic niche into landscape ecology, which provides a new method for spatial characterization of urban and rural spatial landscape patterns. Based on this theory, this paper analyzes the landscape pattern of Ganzhou District by using Landsat images as data source in 1995, 2000, 2005, 2010 and 2015. We calculated the land economic niche by applying the niche potential theory. Combined with the theory of landscape ecology, we explored the effects of the land economic niche change on the landscape pattern at a county scale. The results show that economic niche of construction land, watershed and farmland increased during 1995-2015, and grassland declined significantly. The economic niche of farmland, construction land, watershed and grassland show a negative correlation with the number of patches （NP）, fragmentation index （FN） and the fractal dimension index （FD）, and had a positive correlation with the aggregation index （AI）. There was no significant correlation between the forest land economic niche and landscape metrics. The change of land economic niche has a driving effect on the landscape pattern of the county, which can represent the economic development direction of Ganzhou District. The land economic niche is closely related to the landscape type which can directly obtain an economic benefit.展开更多
With the help of the Theil index,this paper analyzes the regional and intra-regional disparities in the Land Economic Density(LED)of the provincial-level regions in China from 2008 to 2017.The Pearson correlation coef...With the help of the Theil index,this paper analyzes the regional and intra-regional disparities in the Land Economic Density(LED)of the provincial-level regions in China from 2008 to 2017.The Pearson correlation coefficient is also employed to reveal the relationship between influencing factors and the LED of the empirical regions,so as to further identify differences in the LED of different regions.The paper finds that firstly,the average LED on the national scale has grown gradually from about 787 million yuan/km^(2) in 2008 to around 1,396 million yuan/km^(2) in 2017.Secondly,the intra-regional disparity in LED shows a decrease trend.Conversely,the regional disparity in LED has increased year by year.Thirdly,the LED of different regions has different correlations with their influencing factors.Finally,both education and technology input have a significantly positive correlation with the LED,and a negative correlation with urban-rural consumption ratio,which indicates that improving the education and technology input could balance regional development and narrow the development gap between urban and rural areas.展开更多
基金National Natural Science Foundation of China(Grant No.41771130 and Grant No.41661035)
文摘Land use change has a profound impact on biodiversity and ecological processes, and is closely related to changes in landscape patterns. This paper introduces the theory and method of land economic niche into landscape ecology, which provides a new method for spatial characterization of urban and rural spatial landscape patterns. Based on this theory, this paper analyzes the landscape pattern of Ganzhou District by using Landsat images as data source in 1995, 2000, 2005, 2010 and 2015. We calculated the land economic niche by applying the niche potential theory. Combined with the theory of landscape ecology, we explored the effects of the land economic niche change on the landscape pattern at a county scale. The results show that economic niche of construction land, watershed and farmland increased during 1995-2015, and grassland declined significantly. The economic niche of farmland, construction land, watershed and grassland show a negative correlation with the number of patches （NP）, fragmentation index （FN） and the fractal dimension index （FD）, and had a positive correlation with the aggregation index （AI）. There was no significant correlation between the forest land economic niche and landscape metrics. The change of land economic niche has a driving effect on the landscape pattern of the county, which can represent the economic development direction of Ganzhou District. The land economic niche is closely related to the landscape type which can directly obtain an economic benefit.
文摘With the help of the Theil index,this paper analyzes the regional and intra-regional disparities in the Land Economic Density(LED)of the provincial-level regions in China from 2008 to 2017.The Pearson correlation coefficient is also employed to reveal the relationship between influencing factors and the LED of the empirical regions,so as to further identify differences in the LED of different regions.The paper finds that firstly,the average LED on the national scale has grown gradually from about 787 million yuan/km^(2) in 2008 to around 1,396 million yuan/km^(2) in 2017.Secondly,the intra-regional disparity in LED shows a decrease trend.Conversely,the regional disparity in LED has increased year by year.Thirdly,the LED of different regions has different correlations with their influencing factors.Finally,both education and technology input have a significantly positive correlation with the LED,and a negative correlation with urban-rural consumption ratio,which indicates that improving the education and technology input could balance regional development and narrow the development gap between urban and rural areas.
