Dynamic Ecological Risk Assessment and Management of Land Use in the   Middle Reaches of the Heihe River Based on Landscape Patterns and   Spatial Statistics

doi:10.3390/su8060536

CORC > 北京大学 > 城市与环境学院

	Dynamic Ecological Risk Assessment and Management of Land Use in the Middle Reaches of the Heihe River Based on Landscape Patterns and Spatial Statistics
	Fan, Jiahui ; Wang, Ya ; Zhou, Zhen ; You, Nanshan ; Meng, Jijun
刊名	SUSTAINABILITY
	2016
关键词	landscape pattern ecological risk spatial statistics dynamic evaluation Heihe River CHINA
DOI	10.3390/su8060536
英文摘要	Land use profoundly changes the terrestrial ecosystem and landscape patterns, and these changes reveal the extent and scope of the ecological influence of land use on the terrestrial ecosystem. The study area selected for this research was the middle reaches of the Heihe River. Based on land use data (1986, 2000, and 2014), we proposed an ecological risk index of land use by combining a landscape disturbance index with a landscape fragility index. An exponential model was selected to perform kriging interpolation, as well as spatial autocorrelations and semivariance analyses which could reveal the spatial aggregation patterns. The results indicated that the ecological risk of the middle reaches of the Heihe River was generally high, and higher in the northwest. The high values of the ecological risk index (ERI) tended to decrease, and the low ERI values tended to increase. Positive spatial autocorrelations and a prominent scale-dependence were observed among the ERI values. The main hot areas with High-High local autocorrelations were located in the north, and the cold areas with low-low local autocorrelations were primarily located in the middle corridor plain and Qilian Mountains. From 1986 to 2014, low and relatively low ecological risk areas decreased while relatively high risk areas expanded. A middle level of ecological risk was observed in Ganzhou and Minle counties. Shandan County presented a serious polarization, with high ecological risk areas observed in the north and low ecological risk areas observed in the southern Shandan horse farm. In order to lower the eco-risk and achieve the sustainability of land use, these results suggest policies to strictly control the oasis expansion and the occupation of farmland for urbanization. Some inefficient farmland should transform into grassland in appropriate cases.; National Natural Science Foundation of China [41371097]; SCI(E); SSCI; ARTICLE; 18800120818@163.com; wangyayas@sina.com; zhouzhen2014@126.com; nanshany@pku.edu.cn; jijunm@pku.edu.cn; 6; 8
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/492273]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Fan, Jiahui,Wang, Ya,Zhou, Zhen,et al. Dynamic Ecological Risk Assessment and Management of Land Use in the Middle Reaches of the Heihe River Based on Landscape Patterns and Spatial Statistics[J]. SUSTAINABILITY,2016.
APA	Fan, Jiahui,Wang, Ya,Zhou, Zhen,You, Nanshan,&Meng, Jijun.(2016).Dynamic Ecological Risk Assessment and Management of Land Use in the Middle Reaches of the Heihe River Based on Landscape Patterns and Spatial Statistics.SUSTAINABILITY.
MLA	Fan, Jiahui,et al."Dynamic Ecological Risk Assessment and Management of Land Use in the Middle Reaches of the Heihe River Based on Landscape Patterns and Spatial Statistics".SUSTAINABILITY (2016).