Land degradation analysis based on the land use changes and land degradation evaluation in the Huan Beijing area

Xudong Guo; Jing Wang; Junqi Xie; Ting He; Gang Lian; Chunyan Lv

doi:10.1117/12.626377

29 October 2005 Land degradation analysis based on the land use changes and land degradation evaluation in the Huan Beijing area

Xudong Guo, Jing Wang, Junqi Xie, Ting He, Gang Lian, Chunyan Lv

Author Affiliations +

Proceedings Volume 5983, Remote Sensing for Environmental Monitoring, GIS Applications, and Geology V; 598319 (2005) https://doi.org/10.1117/12.626377
Event: SPIE Remote Sensing, 2005, Bruges, Belgium

Abstract

Using remote sensing data of TM and ETM+ in 1992 and 2002, land degradation based on land use changes, especially sand changes were analyzed and land degradation status in 2002 was evaluated in the Huan Beijing Area. The area of sand in 2002 is 6669.6 km², increased 716.2 km² compared to that in 1991, and most of the newly-produced sand came from grassland. Land degradation status in 2002 was evaluated by the combination of vegetation, soil and topography information and the region was divided by 1km ×1km cell as the evaluation unit by the application of the GIS. The indicators of land degradation evaluation included soil organic, soil depth, vegetation cover (NDVI) and slope. Land degradation index (DI) was computed, considering the contribution of different indicators to land degradation. The land degradation status was divided into four types according to DI, no-degradation (DI > = 55), slight degradation (50 = < DI < 55), moderate degradation (40 = < DI < 50) and severe degradation (DI < 40). The results showed that the area of degraded land is 132900 km², which occupied the percent 58.2 of the whole Huan Beijing Area and the proportion of slightly-degraded land to degraded land is about 0.47. The political county taken as an evaluation unit, the partition of land degradation in this area was also analyzed based on land degradation area proportion and degree. Six types of land degradation partition were got.

Citation Download Citation

Xudong Guo, Jing Wang, Junqi Xie, Ting He, Gang Lian, and Chunyan Lv "Land degradation analysis based on the land use changes and land degradation evaluation in the Huan Beijing area", Proc. SPIE 5983, Remote Sensing for Environmental Monitoring, GIS Applications, and Geology V, 598319 (29 October 2005); https://doi.org/10.1117/12.626377

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