综合模型法评估黄河三角洲湿地景观连通性
文献类型：期刊论文
| 作者 | 吴钰茹2,4; 吴晶晶1; 毕晓丽4 ; 栗云召3; 肖鲁湘3
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| 刊名 | 生态学报
 |
| 出版日期 | 2022 |
| 卷号 | 42期号:4页码:1315-1326 |
| 关键词 | 最小耗费距离模型 电路理论 景观连通性 黄河三角洲湿地 |
| ISSN号 | 1000-0933 |
| 其他题名 | Application of the least cost distance model and the circuit theory model in the evaluation of wetland landscape connectivity in the Yellow River Delta |
| 文献子类 | 期刊论文 |
| 英文摘要 | Landscape connectivity is important for maintaining the integrity of ecosystem structure and function,but usually ignored in practical ecosystem management and conservation planning.Graph theory and circuit theory were commonly considered as useful methods to quantify landscape connectivity through identifying potential corridors and key ecological nodes and thus contributed greatly to policy-making at both regional and global scales.The Yellow River Delta(YRD)has typical coastal wetland ecosystems and provided unique ecosystem services,such as high bird diversity.However,natural wetlands in this delta have been greatly fragmented due to global climate changes and human activities,especially after 1980's.How to efficiently evaluate wetland landscape and to identify those hotspots for maintaining wetland connectivity is a primary task for regional wetland conservation and management.Using wetland classification and land cover data in the YRD,56 wetland patches without human disturbances and with larger areas were selected as source patches.We designed two resistance surface schemes,considering the characteristics of coastal wetlands and rivers in this delta.The principles, processing procedures and analysis scales of models from graph theory(the Least Cost Distance model,LCD)and circuit theory(Circuitscape),respectively,based on source patches and resistance surface designation,were compared.Finally, we assessed the wetland connectivity of the YRD using the two models and provide specific suggestions for wetland protection in this delta.The results showed that,(1)the Least Cost Path(LCP)generated by the LCD model is consistent with the high current density area obtained by Circuitscape,(2)different resistance values schemes for rivers and water bodies have clear impacts on outputs of LCP,(3)the key ecological nodes,such as pinch points generated on the two resistance surface are mainly concentrated in the central area of the YRD,(4)according to the improvement score of the obstacle area,three major improvement areas of this delta are extracted: industrial and mining areas,aquaculture ponds in the east,aquaculture ponds in the west and the current estuary of the Yellow River.The results indicated that the LCD model could identify the optimal ecological corridors and Circuitscape model could identify potential corridors,obstacle areas and pinch points.Combination of the two models can not only quantify the spatial patterns of potential corridors and key ecological notes,but also identify the objects of wetland protection and restoration for the YRD and thus provide a scientific and feasible research scheme for landscape protection and wetland management in the other coastal zone. |
| 语种 | 中文 |
| CSCD记录号 | CSCD:7164053 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/34201]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.广州城市信息研究所有限公司,广州510665; 2.中国科学院大学,北京101400; 3.鲁东大学,烟台264003 4.中国科学院烟台海岸带研究所,烟台264003; |
| 推荐引用方式 GB/T 7714 | 吴钰茹,吴晶晶,毕晓丽,等. 综合模型法评估黄河三角洲湿地景观连通性[J]. 生态学报,2022,42(4):1315-1326. |
| APA | 吴钰茹,吴晶晶,毕晓丽,栗云召,&肖鲁湘.(2022).综合模型法评估黄河三角洲湿地景观连通性.生态学报,42(4),1315-1326. |
| MLA | 吴钰茹,et al."综合模型法评估黄河三角洲湿地景观连通性".生态学报 42.4(2022):1315-1326. |
入库方式： OAI收割
来源：烟台海岸带研究所
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