摘要
适宜植物遴选是干热河谷库区消落带修复的关键。为筛选干热河谷库区消落带修复适宜耐淹抗旱植物,检验消落带修复有效性,本文以乌东德水电站库区己衣镇新民村消落带修复区为研究对象,结合定量与定性分析方法,观察并分析了不同物种、大小规格、种植海拔的植物在长期水淹后的生长和恢复情况。结果表明:(1)少量乡土植物可在消落带上段生长存活,乡土植物桑树、狗牙根、苍耳、苘麻可在整个消落带区域生长;(2)引进植物池杉、中山杉、乌桕、枫杨、小梾木、秋华柳可在干热河谷库区消落带区域生长;(3)大规格苗木在消落带生长更好,种子播种修复效果不佳;(4)修复区植物生长受干热气候、病虫害和种间竞争等因素影响。研究结果可为后续干热河谷库区消落带修复研究积累基础数据与实践经验。
The selection of suitable plants is of vital importance to the revegetation of reservoir riparian zone in dry-hot valley.In order to screen out flood-tolerant and drought-resistant plants,and to test the effectiveness of different engineering measures in water-level-fluctuation zone of dry-hot valley reservoir area,a revegetation study was conducted in Wudongde Reservoir located in Jiyi Town.The recovery and growth of plants of different kinds,scales and elevations were quantitatively or qualitatively analyzed.The results show that:(1)A few species of local plants can survive in the upper riparian zone while Morus alba,Cynodon dactylon,Xanthium sibiricum and Abutilon theophrasti can survive in the entire riparian zone;(2)The introduced plant species including Taxodium ascendens,Taxodium hybrid‘Zhongshanshan’,Sapium sebiferum,Pterocarya stenoptera,Cornus paucinervis and Salix variegate can be used for restoration of riparian zone of dry-hot valley;(3)Larger seedling has a higher survival rate while sowing seeds are not suitable for vegetation restoration of water-level-fluctuating zone in dry-hot valley;(4)Plant growth in the restoration area was affected by many factors such as dry-hot climate,pests and diseases,and interspecific competition.The research results can accumulate fundamental data and practical experience for subsequent works on hydro-fluctuating zone restoration in dry-hot valley reservoirs.
作者
于江
万丹
周火明
甘国权
赵姹
欧阳德和
刘波
YU Jiang;WAN Dan*;ZHOU Huoming;GAN Guoquan;ZHAO Cha;OUYANG Dehe;LIU Bo(Environmental Protection Department of China Three Gorges Projects Development Co.,Ltd.,Chengdu 610023,China;Chongqing Branch,Changjiang River Scientific Research Institute of ChangJiang Water Resources Commission,Chongqing 400026,China;Kunming Dispatch&Control Center of Three Gorges Cascade Dispatch&Communication Center,Kunming 530102,China;Wuhan Changjiang Kechuang Science and Technology Development Co.,Ltd.Wuhan 430010,China)
出处
《三峡生态环境监测》
2022年第3期37-45,共9页
Ecology and Environmental Monitoring of Three Gorges
基金
乌东德、白鹤滩水电站消落带修复试验项目(乌东德)(JG/19043B)
长江科学院研转基金(CKZS2017013/CQ)
中央级公益性科研院所基本科研业务费项目(CKSF2019413/CQ)。
关键词
干热河谷
消落带修复试验
乌东德库区
植物生长
dry-hot valley
remediation experiment of riparian zone
Wudongde Reservoir area
plant growth
