河岸植被缓冲带完整性及恢复措施——以北京市密云水库上游潮白河流域为例

Integrity and Restoration Countermeasures of Riparian Vegetation Buffers——A Case Study on Chaobai River Basin in Up-stream of Miyun Reservoir in Beijing City

通过对潮白河流域22个断面的调查分析,根据潮白河河道断面形态、河岸土地利用类型及岸坡坡度等条件,将潮白河河道断面划分为:U形+缓坡、U形+陡坡、U形+陡坎、V形+陡坡和漫滩型,并对潮白河河岸植被缓冲带完整性进行了评价。结果显示,潮河河段内植被缓冲带完整性较差,以次不完整状况为主;白河河段内河岸植被缓冲带状况相对较好,大部分调查断面内植被缓冲带为基本完整及完整状态。针对潮白河河岸植被缓冲带存在的问题,提出了潮白河流域不同河岸带断面类型植被缓冲带的恢复对策。

After investigating 22 river cross-sections in Chaobai River basin, according to the river section morphology, riparian land use types, riparian slop and other conditions, the river section morphology was divided into U-shaped ＋ gentle slope, U-shaped ＋ steep slope, U-shaped ＋ scarp, V-shaped ＋ steep slope and flood-plain-types. Furthermore, the riparian forest buffers integrity of Chaohe River was assessed. The results showed that the vegetation buffer in poor condition in Chaohe River, mainly seq-incomplete; riparian forest buffers in relatively good condition within Baihe River, most of the investigation sections of the vegetation buffer were in basic integrity and integrity state. According to the existing problems, restoration countermeasure of different river section in Chaobai River basin was put forward.