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当前位置: 首页 > 文章 > 长江三峡水库消落带桑树耐水淹试验 林业科学 2012,48 (5) 154-158
Position: Home > Articles > Preliminary Experimentation on Flooding Resistance of Mulberry Trees along the Water-fluctuation Belt of the Three Gorges Reservoir Scientia Silvae Sinicae 2012,48 (5) 154-158

长江三峡水库消落带桑树耐水淹试验

作  者：
张建军;任荣荣;朱金兆;宋闯;刘杰锋;傅建强;胡海波;王建修;李慧敏;徐佳佳
单  位：
北京林业大学;中国林业科学研究院;重庆海田林业科技有限公司;南京林业大学;重庆开县林业局
关键词：
桑苗;耐淹;消落带;三峡库区
摘  要：
三峡水库是当今世界最大的峡谷型水利工程,根据"蓄清排浊"的运行方案,水库的水位在145～175m之间变化,在库区内形成了落差达30m、面积达350km2的消落带。三峡库区消落带面积大、水淹时间长(部分消落带水淹时间长达6个月),具有"冬水夏陆"的特点(王海锋等,2008)。消落带是库区泥
译  名：
Preliminary Experimentation on Flooding Resistance of Mulberry Trees along the Water-fluctuation Belt of the Three Gorges Reservoir
作  者：
Zhang Jianjun1 Ren Rongrong2 Zhu Jinzhao1 Song Chuang2 Liu Jiefeng3 Fu Jianqiang3 Hu Haibo4 Wang Jianxiu5 Li Huimin1 Xu Jiajia1 (1.Beijing Forestry University Beijing 100083; 2.Chongqing Haitian Forestry Science and Technology Ltd.Co. Chongqing 405400; 3.Chinese Academy of Forestry Beijing 100091; 4.Nanjing Forestry University Nanjing 210037; 5.Forest Bureau in Kai County Chongqing 405400)
关键词：
mulberry seedlings; water-tolerance; water-level-fluctuation belt; the Three Gorges Reservoir
摘  要：
As one of the largest reservoirs in the world, the Three Gorges Reservoir (TGR) has a huge area of water-level-fluctuation belt (WLFB). How to manage and utilize the WLFB of the TGR has been a highly domestic and international concern. Among many management and utilization measures, the biological one seems to be very efficient and attractive, however the plants planted on the WLFB must have high flood-tolerance. In this study, the 10 hm2 one-year-old mulberry seedlings were planted on the WLFB (located in Xiaohe Village, Kai County, Chongqing), with the elevation changing from 157 m through 175 m, in March, 2010, and an experiment had been conducted to investigate the flood-tolerant property of the mulberry seedlings from October, 2010 to April, 2011. During this period, the highest water level of the TGR reached 175 m and caused the complete submergence of the mulberry seedlings for 3 to 6 months. The result showed that: the area-weighted average of the bud flush ratio of the mulberry seedlings, which had suffered submergence for 90 to 118 d, was about 62.6%. The bud flush rate was generally determined by several factors, such as depth and duration of the submergence, drainage property of the WLFB, and whether the fall branches of the seedlings were cut or not. The limitation of the flood-tolerant duration of the annual mulberry seedlings could be less than 150 d, since almost all of the annual mulberry seedlings planted on the areas below 166 m were dead when the submergence period reached 150 d. The perennial mulberry trees planted on the area under 161.8 m, however, they could flush and form new crowns normally after a 214-day submergence. This experiment indicates that the mulberry trees are highly tolerant to submergence, thus, could be one of the most adaptable species and play an important role in managing and utilizing the WLFB of the TGR.

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