Applicability of Landscape Index for Assessing Performance of Low Impact Development Schemes
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
9 9
Page:
110-116
Column:
Date of publication:
2020-05-01
- Keywords:
- font-size: 10pt; ">low impact development; SWMM; landscape index; runoff control
- Abstract:
-
The SWMM model of a residential area was established. The total storage capacity of low impact development (LID) facilities in the residential area was calculated based on the volume capture ratio of annual rainfall. The storage capacity was distributed to the LID facilities in different proportions, and thus different LID design schemes were developed. The event rainfall runoff control effects of the design schemes under different rainfall scenarios were simulated. Six landscape indexes were selected to analyze their correlation with the event rainfall runoff control rate of the corresponding design schemes. The applicability of landscape index to evaluate the performance of the LID design scheme was explored. The Shannon diversity index and Shannon evenness index had strong positive correlations with the event rainfall runoff control rate in different cases, and the patch density, division, largest patch index and patch size coefficient of variation had correlations with the event rainfall runoff control rate in specific cases. The conclusion provided a reference for the prediction of runoff control effect of the residential area scale LID design scheme.
Last Update:
2020-05-01