土地利用强度变化的空间异质性研究

以晋江市为例,以系统网格采样法获取研究样本,以地统计学理论和半方差函数为工具,探讨晋江市1989～2001年人类对土地景观干扰活动的空间异质性.结果表明,研究时段人类干扰活动存在明显的空间异质性,尤其是NE-SW向的方向性结构突出,主要原因在于交通干线的影响;各级行政中心成为其生长极点;交通干线与行政中心联合作用,使人类干扰呈现明显的点-轴格局.

Spatial heterogeneity of land use intensity

To approach the spatial heterogeneity of human disturbance is of significance in researching the dynamics of land cover change, especially the characteristics of its directional structure. Jinjiang City is a "hot" region of land use change in Fujian Province, and the land has experienced intense human disturbance. This paper studied the spatial heterogeneity of land use intensity and human disturbance in this city in 1989 - 2001, with systematic grid sampling method and geostatistics in application. The results revealed that there was an obvious spatial heterogeneity of human disturbance in the study area, especially the directional structure of NE-SW caused by the traffic line from Qingyang-Anhai. Human disturbance was grown in the whole area, and the administrative centers served as the growth poles. Because of the associated influence of traffic lines and administrative centers, human disturbance was of a pole-axis structure.