多梯度下鸡西市景观格局现状及分异特征 打开文本图片集 摘要 采用景观格局指数分析及缓冲区梯度带分析2种方式相结合的方法，研究鸡西市景观格局空间分布和梯度变化特征。结果表明，研究区以建设用地和耕地景观为主，从主城区向外，其景观面积比例和最大斑块指数沿着缓冲区梯度带呈下降趋势;缓冲区内的城市地表覆被变化较为强烈，呈现斑块形状多样、复杂、破碎的分布格局。关键词 景观格局;梯度分析;分异特征;缓冲区;鸡西市中图分类号 TU-984  文獻标识码 A文章编号 0517-6611（2021）22-0097-03doi：10.3969/j.issn.0517-6611.2021.22.022开放科学（资源服务）标识码（OSID）：Current Situation and Differentiation Characteristics of Landscape Pattern in Jixi City under Multi-gradientYE Xin，DONG Lun，L Li-na et al （College of Mining Engineering，Heilongjiang University of Science and Technology，Harbin，Heilongjiang 150027）Abstract The spatial distribution and gradient change characteristics of urban landscape pattern in Jixi City was studied by combining landscape pattern index analysis and buffer zone gradient analysis.The results showed that the study area was dominated by construction land and cultivated land landscape.From the main urban area to the outside along the buffer zone gradient zone，the proportion of landscape area and the maximum patch index showed a downward trend.The buffer zone was the area with the most intense change of urban surface cover，showing the distribution pattern of patch shape diversity，complexity and fragmentation.Key words Landscape pattern;Gradient analysis;Differentiation characteristics;Buffer;Jixi City城市化作为一种复杂的社会活动过程，被普遍认为是改变地表覆被、造成生物多样性降低、影响城市生态环境和景观格局空间分布差异的重要原因[1]。