河流生态修复的尺度格局和模型

通过分析水文过程与生态过程的耦合特征，论证了流域尺度是编制河流生态修复规划的适宜尺度。讨论了景观空间异质性与物种多样性的相关关系，提出了在流域和河流廊道两种尺度上改善景观格局配置的方法。特别指出了在河流廊道尺度下提高景观空间异质性的两个要点，一是增强地貌学意义上的空间异质性，二是改善生态水文学和生态水力学意义上的水文、水力学条件。本文还介绍了景观格局分析方法和景观格局-生态过程模型。

Scale and pattern for ecological restoration of river

Based on the analysis on characteristics of hydrological process coupling with ecological process, the concept of river basin scale to be used as an appropriate scale for carrying out the river ecological restoration planning is demonstrated. The correlation between landscape spatial heterogeneity and species diversity is discussed and two methods for improving the allocation of landscape pattern both in river basin scale and river corridor scale are suggested. It is pointed out that there are two important measures for elevating the landscape spatial heterogeneity in river corridor scale. The first one is the enhancement of spatial heterogeneity based on morphology and the other one is improvement of hydrological and hydraulic properties based on the meaning of hydrology and eco-hydraulics. The method for analyzing landscape pattern and the model for describing the landscape pattern-ecological process are introduced.