基于数量差和分配差的土地变化分析：以泉州市为例

Land Change in Terms of Quantity and Allocation: Case Study of Quanzhou, China

摘要: 传统的土地变化分析方法中注重对土地数量变化信息的探究。本文研究将土地变化信息分解为两种不同的变化成份：第一，由于地类数量变化而引起的土地利用变化成份，记为数量差；第二，由地类空间分布不匹配而引起的土地利用变化成份，记为分配差。以泉州市1995~2010年15年间的土地变化分析为例，从市域、县域两个尺度，研究区总变化、特定地类变化两个方面对泉州市土地变化信息进行分析。结果表明：1) 数量差和分配差之间的关系受空间尺度的影响。在市域尺度下，不同时间段之间的研究区整体及各地类的土地变化信息呈现相同的变化规律。而在县域尺度下，则表现出差异化的变化规律，说明市域尺度下的相对稳定是由县域尺度补偿变化的结果；2) 数量差和分配差之间的关系在空间上呈现明显的区域聚集现象。西北地区分配差大于数量差，且随着时间延长两者之间差异逐渐增加；东南地区分配差小于数量差，且随着时间延长两者之间差异逐渐减小。

Abstract: In the traditional land change analysis methods, we pay more attention to the quantity change in-formation. This article decomposes the land change information into two components: quantity difference and allocation difference. Quantity difference refers to the change associated with the sizes of the categories between two time points. Allocation difference is the difference between the total change and the quantity change which means the change caused by the mismatched in allo-cation. We analyze the change information at two scales: city and county, and from two aspects: total study area and different categories. Results show that: 1) The relationship between the quantity difference and the allocation difference is affected by spatial scale. 2) The relationship between the quantity difference and the allocation difference presents a significant spatial partition. Where A^'_kt>Q^'_kt and with the progression of time the difference between Q^'_kt and A^'_kt enlargement is located in the northwest region while where Q^'_kt>A^'_kt and with the progression of time the difference between Q^'_kt and A^'_kt shrink is located in the southeast region.