The present invention relates to a wireless sensor network measurement system and a measurement method for monitoring, forecasting and alarming a landslide. The present invention comprises: a measurement point decision unit for determining measurement points using a two-dimensional mesh automatic generation algorithm; a wireless network sensor unit which is composed of a plurality of sensor nodes installed to be scattered at the determined measurement points in a mountain area, and obtains landslide measurement information at each sensor node; a gateway for collecting the measurement information of the each sensor node and transmitting the collected measurement information to the outside; and a landslide evaluation unit for generating landslide information using a landslide forecasting/alarm algorithm through the measurement information received from the gateway and the determined measurement point.
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