Affecting factors analysis of soil moisture for arid mining area based on TM images

作者：Bian Zheng Fu^*; Lei Shao Gang; Chang Lu Qun; Zhang Ri Chen

来源：Journal of China Coal Society, 2009, 34(4): 520-525.

• Affecting factors
• Arid mining area
• Capillary zones
• Coal minings
• Field samplings
• Ground water levels
• Inverse proportions
• Mining subsidence
• Plant growths
• Plant roots
• Sampling sites
• Soil infiltrations
• Soil surfaces
• Thermal inertias
• TM image

The model for calculating soil moisture (SM) in terms of thermal inertia using TM image and MODIS image was developed. There existed remarkable difference between two sets of average SM calculated by limited field sampling points taken from two different sampling sites, mined site and unmined site, and there were not distinct difference between two sets of average SM calculated by the model using TM image. Domain factors affecting the SM were analyzed. The SM is in inverse proportion to the elevation, and in direct proportion to the vegetable index. Coal mining resulted in the change of soil infiltration capacity. The vertical filtration index increased at the mined site, thereafter, the condition to supply ground water changed, the soil surface transpiration increased and SM changed. Whether the drop of ground water level from mining engineering affects the plant growth is upon the ground water level before mining and the depth of plant root. When the plant root is long enough and extends downwards to reach the zone of capillary zone, ground water will be available for plant growth.

• 出版日期2009
• 单位中国矿业大学（北京）