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A fuzzy composite appraisal of multiple biologica indexes was proposed in order to monitor the aquatic environment in mining subsidence. This method can overcome the shortcoming of the un-precision of traditional biological evaluation. Through the fuzzy mathematics principle, the functions of membership were constructed by using middle value of boundary line of water quality grade appraisal results based on traditional biological indexes as datum point. Four representational mining subsidence ponds in Huainan mine area were surveyed. Based on the physical-chemical properties and distribution of aquatic vascular plant and phytoplankton community, the BIP index, Diatom index, Shannon-Wiener diversity index and Chlorophyll-a content were calculated. The four indexes above mentioned were applied to carry out fuzzy composite appraisal water environment. The results show that all sampling subsidence water have been polluted in different eutrophication extent.

In order to obtain mining land reclamation scheme reasonably, the matter element model was proposed. The divergence which is the character of matter element model was used to design land reclamation schemes. The of land reclamation matter element model are nature state, geology structure, reclamation process, mining subsidence state, present mining condition financing. At first, the author applied the divergence of matter element to establish scheme collection. Then qualified schemes are selected preliminarily according to the known value. The following step is establishing another appraisal matter element model, which eigenvalues are land production, cost, farmer per enhancive income, ecosystem stability, biodiversity, landscape diversity. In the appraisal matter element, Shannon index reflects biodiversity and affinity analysis reflects landscape diversity. Through the appraisal matter element model dependent function between preliminarily schemes was set up. Finally, the most excellent one is selected by the optimal appraisal method. Moreover, a design process of land reclamation in Neiqiu mining subsidence was introduced. The result shows that the divergence tree method is extension and logical.

As one of the most widely applied wireless technologies, WLAN of IEEE 802.11 is playing an important role in the next generation wireless communication. The 802.11e will guarantee the QoS of VoIP over WLAN. DiffServ is suitable to guarantee the QoS of communication over the IP backbone network. This paper uses NS2 as a simulation tool to simulate the mechanism of integrating 802.11e with DiffServ on how to provide VoIP over WLAN with short delay, less jitter and high transmission priority. The results of simulation show that the integration of 802.11e and DiffServ will highly promote the QoS performance of VoIP over WLAN.