Figure 2From: Temporal variations of ecological security with soil and water loss stress in black soil region of northeast China: a case study on Baiquan CountyTemporal variations of sub-indices based on Pressure, Status and Response from 1979 to 2005 in Baiquan County: (a)Temporal variation of sub-indices of 'Pressure ' during 1979~2005; (b) Temporal variation of sub-indices of 'Status ' during 1979~2005; (c) Temporal variation of sub-indices of 'Response' during 1979~2005.Back to article page