农村居民点整理影响下的景观格局及其生态效应研究

以天津市武清区下朱庄街农村居民点整理工程为例，采用ArcGIS 9.3和Fragstats 3.3数据分析平台研究工程影响下景观格局指标的变化规律；并进一步将生态系统服务价值计算同敏感度分析结合，探讨工程影响下的生态效应。结果表明:项目实施后，斑块破碎化程度增强，连接性以及斑块聚集性增强；生态服务价值提高22.12%，且生态价值敏感度变化在合理范围之内；景观生态风险值由0.76变为1.12，研究区生态风险从较高风险区转变为高风险区，表现出增加的趋势。该研究有效评价农村居民点整理的实施效果，为后期农村居民点整理决策制度提供科学依据。

Research for Landscape Pattern and Ecological Effects under the Influence of Rural Residential Land Consolidation

Rural residential land consolidation in Xiazhuzhuang of Tianjin was taken as a case, this paper analyzed change in landscape pattern index under the rural residential land consolidation by using ArcGIS 9.3, Fragstats 3.3. Based on the ecosystem service value and ecological sensitivity analysis, the ecological effects of the project were also studied. The results indicated that the patch shape tended to be regularized, connectivity and aggregation enhanced; ecosystem service value improved 22.12%, the value of ecological sensitivity was in a reasonable range. And it showed that ecological risk value was enhanced from 0.76 to 1.12, ecological risk showed an increasing trend. This research effectively evaluated the effect of rural residential land consolidation, also provided a scientific basis for decision-making system.