天津市生态用地年度变化格局与热点分析

通过调查天津市2017—2018年生态用地利用变化情况,对分类型、分区域生态用地内人类活动斑块数量及面积逐年变化情况进行分析,发现天津市生态用地变化的主要趋动力为人工构筑物的新增、拆除、改扩建等人类活动,变化热点地块为东部楔形绿地、西部楔形绿地、中心城市绿廊,自然要素总体呈现减少趋势。

By investigating the land use change of ecological land in Tianjin from 2017 to 2018,the paper analyzes the changes in the number and area of human activity patches in sub-type and sub-regional ecological land. It is found that the main driving force of ecological land use change in Tianjin is human activities such as the addition,demolition,reconstruction and expansion of artificial structures,the hot spots of change are the eastern wedge-shaped green land,the western wedge-shaped green land,and the central city green corridor,while the natural elements generally show a decreasing trend.