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By Jiaxing Zhang

This quantity presents an outline of the papers offered on the 2014 overseas convention on Environmental safeguard and Sustainable Ecological improvement (EPSED2014), which used to be held in Wuhan, Hubei, China, October 24 - 26, 2014. EPSED2014 brings jointly researchers, builders, and pros from worldwide in either fields of Environmental defense and Sustainable Ecological improvement for sharing the newest study effects, exploring new parts of analysis and improvement, and to debate Earth technological know-how, source administration, Environmental security, Sustainable Ecological improvement concerns. The convention supplied possibilities for the delegates to in my view alternate rules and functions and to set up enterprise family members and research collaboration.

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Example text

The formula is as follows: Fik = Zi Dik (1) In the formula (1), Fik is field strength of the city i on the point k, and Zi is comprehensive scale value of the city i and Dik is the distance from the city i to the point k. The model emphasizes the city’s influence and radiation to the surroundings and follows the Range Attenuation Law (Chávez-Garc a & Cárdenas, 2002; Leite, Duarte & Young, 2011; Ludwig, Kelley, Butterfield, Nelson & Früh-Green, 2006;). In the model, the study area was supposed to be homogenized, namely, all points in the area equally received the influence from the central urban-rural radiation.

Due to the geographical isolation, the spatial extent of mutual communication and influence are limited, the spatial influencing network has not yet formed. From now on, the improvement of transportation network should be taken by three steps. Firstly, the construction of local roads should be strengthened to further enhance the main function of radial transport network in Liangzhou District and Jinchuan District as the core. Secondly, take the counties, main towns and villages as the objects to develop road network according to point-axis mode, and regional construction is strengthened, with the destination to improve the road network connectivity.

85. 30. Through different periods of time, the central city is higher than the sub-level city and the urban-rural spatial expansion mainly take on the central city. 11 hm2/a. The central cities’ expansion rate is obviously higher than the sublevel cities. 42% of the basin, and the expanded region mainly happened in Liangzhou District and Minqin County. Other places expanded a little. The area of high urban-rural spatial expansion rate is centered by the towns which have high urban-rural potential index such as Liangzhou District and Jinchuan District.

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