Landscape ecological study on torrent control planning in harmonizing with environment

1. 在“景观生态学”的基础上，结合各种景观因素，考虑了与自然和谐相处的防洪工程基本概念。考虑了常规激流控制工程中存在的问题。传统的激流控制工程以减少破坏性输沙为目的。通常泥沙输运尺度的控制一直被忽视。考虑了常规控制工程对河流生态系统的各种影响。这些影响主要表现在：连续性的破坏；干扰的缓解；空间的释放；环境的单调化；环境和生态系统的剧烈变化。介绍了改进传统激流控制工程的基本思路。在控制激流工程中，应在一定程度上允许输沙和激流环境的扰动。针对常规控制工程影响的评价，介绍了一种综合评价模型流域水流环境整体结构的方法。在模型激流中分析了河底小池结构的分布及相关的水力条件。介绍了奥地利近年来与自然和谐相处的激流控制工程实例。

1. On the basis of "Iandscape ecology", the basic concepts of the torrent control engineering in harmonizing with nature was considered in relation with various landscape factorors.2. Problematic aspects of conventional torrent control engineering were considered. The conventional torrent control engineering was aimed to be mitigation of destructive sediment transport. It has been neglected to control the usual dimension of sediment transport.3. Various types of influences of conventional torrent control engineering to torrent ecosystem was considered. Main aspects of such influences are the followings : 1) destruction of continuity, 2) mitigation of disturbance, 3) release of space, 4) monotonizing of environment, 5) drastic change of environment and ecosystem.4. Basicideas on improving conventional torrent control engineering was introduced. Sediment transport and disturbance of torrent environment should be allowed to an certain extent in torrent control engineering5. In relation to assessment of influence of conventional torrent control engineering a complexmethod to evaluate the whole structure of torrent environment was introduced in some model watersheds.6. Distribution of riffle-pool structures of river floors and related hy draulic conditions were analyzed in a model torrent.7. Recent examples of torrent control engineering in harmonizing with nature in Austria ware introduced.