1. A system for monitoring forest products, comprising: at least an active communication device, being arranged at a forest product for detecting and registering data relating to the status of the forest product and thus emitting a signal in associate with the detected status of the forest product, wherein the active communication device further comprises at least a sensor, for detecting status of the forest product and thus generating a sensing signal accordingly, and an active radio frequency identification (RFID) tag integrated with the at least one sensor as a module within the active communication device for enabling the same to receive the sensing signal so as to issue a signal corresponding thereto; at least an access device, each being disposed at a specific location, comprising: a control unit, for receiving a control signal emitted from the access device; and an imaging unit, coupled to the control unit for receiving signals from the control unit so as to capture at least an image accordingly when said access device detects a signal emitted from any said active communication device; and a portable communication apparatus, for receiving information from the control unit; wherein the control unit further comprises: an image analyzing unit, for receiving the at least one captured image so as to perform an image analysis comprising image recognition and an identification process to generate an identification result; and a telecommunication unit, capable of communicating with a portable communication apparatus; wherein each of the at least one access device is able to access the signal emitted from the at least one active communication device while the at least one active communication device is within a detection range of the referring access device and thus is enabled to issue a data signal accordingly; wherein said control unit generates said identification result comprising carrier license plate information, carrier color, carrier trajectory, or features/identification of carrier passengers; wherein the access device accesses information from a database based upon the identification result; wherein the information received by the portable communication apparatus from the control unit comprises the time which the image was taken and the identification result.