| 黄河下游湿地景观特征及其对来水来沙的响应 |
| |
| 引用本文： | 丁艳峰,潘少明.黄河下游湿地景观特征及其对来水来沙的响应[J].河南科学,2007,25(2):311-315. |
| |
| 作者姓名： | 丁艳峰 潘少明 |
| |
| 作者单位： | 南京大学,海岸与海岛开发教育部重点实验室,南京,210093;南京大学,海岸与海岛开发教育部重点实验室,南京,210093 |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划) |
| |
| 摘 要： | 利用黄河下游利津、泺口和花园口1950-2005年水沙数据、1987年和2002年两期下游滩地、河流和坑塘湿地数据,运用景观生态学基本理论,分析黄河下游湿地景观格局的演变,讨论湿地时空变化对来水来沙的反馈效应.结果表明,近20年来,黄河下游湿地大幅缩减,滩地景观减少最多,受人为和自然因素双重作用,景观斑块多样性变化不一.回归分析表明,滩地面积与来沙存在负相关,受来水减少影响,主河道萎缩严重,河口延伸速率减缓.
|
| 关 键 词： | 黄河下游 湿地 景观格局 来水来沙 |
| 文章编号： | 1004-3918(2007)02-0311-05 |
| 修稿时间： | 2006-11-16 |
Landscape Characteristics of Wetland in Lower Yellow River Basin and Feedback to Runoff and Sediment Load |
| |
| DING Yan-feng,PAN Shao-ming.Landscape Characteristics of Wetland in Lower Yellow River Basin and Feedback to Runoff and Sediment Load[J].Henan Science,2007,25(2):311-315. |
| |
| Authors: | DING Yan-feng PAN Shao-ming |
| |
| Institution: | Key Laboratory of MOE of Coastal and Island Development, Nanjing University, Nanjing 210093, China |
| |
| Abstract: | Based on two phases(1987?2002)vector data about wetland in lower Yellow River basin and runoff and sediment load data,we reconstructed the former landscape structure and elucidated the changes in landscape patterns during the last 20 years,and discussed the feedback to the runoff and sediment load.The result shows that the wetland in the lower Yellow River basin decreases greatly in the last 20 years,especially the beach landscape type.Influenced by natural and human activities,the block diversity index changes inconsistently with each other.Regression analysis shows that there is a negative relationship between beach area and sediment load.Because the reduction of runoff,the main riverway is atrophic,and the land accretion rate is slow down. |
| |
| Keywords: | the lower Yellow River basin wetland landscape structure runoff and sediment load |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
