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Spatial-temporal characteristics of landscape ecological sensitivity in Yulin area |
| SHI Yuqiong1, LI Tuansheng2, SHI Xiaohui2, KANG Huanhuan2, YAN Ying2 |
1. College of Forestry, Shanxi Agricultural University, Taigu 030801, China;
2. College of Earth Science and Resources,Chang’an University, Xi’an 710054, China; |
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Abstract The analysis of landscape ecological sensitivity is one of the important research objects of ecological environment. In order to analyze the spatial-temporal characteristics of landscape ecological sensitivity, the authors divided Yulin area into 527 units by 10 km×10 km grids. The index of landscape ecological sensitivity for each unit was calculated by weighted sum method, and then interpolated by Kriging in ArcGIS to get the landscape ecological sensitivity map. According to sensitivity index, landscape ecological sensitivity was classified into 5 levels: Insensitive, mild, moderate, high and extreme. From 2000 to 2005, the area of mild level and extreme level increased, and that of moderate level and high level decreased, with the weakening of landscape ecological sensitivity. From 2005 to 2010, the area of mild level decreased greatly, the area of moderate level and high level increased slightly, the area of high level increased greatly, and the area of extreme level also increased, with the increase of the landscape ecological sensitivity.
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| Keywords
foliar dustfall
iron tailings
hyperspectral inversion
spectral absorption index
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Issue Date: 03 May 2017
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2017,
Vol. 29
