地理学报 ›› 2001, Vol. 68 ›› Issue (1): 32-43.doi: 10.11821/xb200101005

• 论文 • 上一篇    下一篇

辽河三角洲湿地景观格局对养分去除功能影响的模拟

李秀珍, 肖笃宁, 胡远满, 王宪礼   

  1. 中国科学院沈阳应用生态研究所,沈阳110015
  • 收稿日期:2000-07-20 修回日期:2000-11-06 出版日期:2001-01-15 发布日期:2001-01-15
  • 基金资助:
    国家自然科学基金重点项目(49631040);中国科学院留学经费择优支持回国工作基金项目;江苏省地理信息科学重点实验室客座基金

Effect of Wetland Landscape Pattern on Nutrient Reduction in the Liaohe Delta

LI Xiu zhen, XIAO Du ning, HU Yuan man, WANG Xian li   

  1. Institute of Applied Ecology, CAS, Shenyang 110015, China
  • Received:2000-07-20 Revised:2000-11-06 Online:2001-01-15 Published:2001-01-15
  • Supported by:
    National Natural Science Foundation of China,No.49631040

摘要: 以辽河三角洲湿地净化的空间模型为基础 ,研究了不同景观空间格局对养分去除功能的影响。根据辽河三角洲的实际情况及研究需要 ,设计了 4个系列的实验测试图 :灌渠密度、苇田面积大小、苇田缩减格局和泵站位置。结果表明 ,每个因子对总养分去除率的影响不超过1 0 %。开挖更多的灌渠对提高养分去除效果没有太大意义 ,而小面积的苇田效果反而更好。在不同的苇田分布格局中 ,以集中式分布最有利于保持较高的养分去除效率 ,泵站位置也以靠近苇田边缘为佳。

关键词: 格局效应, 养分去除, 湿地

Abstract: The effect of spatial pattern on the nutrient reduction is investigated based on the spatial simulation model designed for the estuary wetland of Liaohe Delta. Four scenarios are designed to test the effect of different landscape patterns on the nutrient reduction in the reed marsh: canal density, reed area size, reed area shrinking pattern, and pumping station position. According to the simulation result, each factor brings less than 10% change in the total nutrient reduction rate. More canals will not help much to improve nutrient reduction. Smaller areas are more efficient than larger ones. The shrinkage pattern is better than other shrinking patterns in keeping a higher nutrient reduction rate. It is also more efficient to keep the pumping station near the border of the area to be irrigated. These conclusions provide theoretical supports to strategy makers for local land use planning, and contribute to the understanding of the relationship between landscape patterns and functions.

Key words: pattern effect, nutrient reduction, wetland

中图分类号: 

  • Q149