Generally, paddy is mainly transformed to orchard land and urban built-up land, while dry land is mainly to orchard land, forest land and undeveloped land in the decreasing arable land areas.
在减少的耕地中，水田一般转变为果园、建设用地，而旱地一般转变为果园、林地、未利用地。
We start at the rank-size rule by urban population and the rank-size rule by urban built-up area, and derive a mathematical relationship that the land use size of a city and its population.
从前人的成果，即以人口表示的城市位序-规模法则和以建成区面积表示的位序-规模法则出发，演绎出城市的用地规模和人口数量呈异速增长。
This paper uss the factor analysis to evaluate and compare the intensive land use of the urban built-up areas of 17 cities in Shandong province.
本文运用因子分析法对山东省17个地级市建成区的土地集约利用状况进行了评价和比较。
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