坡面径流播种作用的论证分析

The Expound and Prove on the Seeding Effect of Hillslope Runoff-Erosion

与坡面径流造成植物种子流失的认识不同,野外观察认为,除负面作用外,坡面径流还具有强大的播种功能,是植被自然更新演替机制中不可或缺的过程,采用理论分析和观察相结合的方法开展研究。在分析坡面径流、土及其相互作用的基础上,阐述了植物种子的水起动性能和停泊性能及其径流响应策略,植物定居的微圃要求,进而证明坡面径流具有创造微圃和播种作用。最后指出,坡面治水不在于阻断径流,而在于把径流调控在细沟流范围内,以抑制其害,发扬其利。

Through field observations that hillslope runoff-erosion in addition to the negative effect, but also has powerful sowing, which is indispensable to vegetation succession mechanism of natural rejuvenating processes, the article adopts the method of combining theoretical analysis and observation conducted research. Based on the analysis of hillslope runoff-erosion and soil and their interactions, expounds the water starting performance and anchorage performance of plant seeds, the runoff response strategy, the requirements of plants settle in micro nursery, these further proved that hillslope runoff-erosion hare two kinds of effect which are creating micro nursery and seeding. Finally, the author pointed out that the slope surface water control is not blocking the runoff, but regulating runoff in rill flow range, so we can inhibit the unfavorable consequences caused by runoff-erosion, and give full play to its advantageous.