丹江口水库消落区生态修复植物选择

Selection of Plant Species for Ecological Protection in Hydro-Fluctuation Belt of Danjiangkou Reservoir

立足于丹江口水库消落带的植被恢复和生态保护,同时兼顾库区生态保护参与者自身生产生活的可持续性,根据丹江口水库蓄水后消落区变化特点,研究选择适宜的林木品种,以保护水库水质安全为目的,提出科学的水库消落带生态保护方案,并进行了相关试验。结果表明:在郧县为代表的平原、丘陵区域,可以选用意大利杨等速生丰产的用材树种;而位于相对贫瘠的山区,可以选择饲料桑为代表的灌木或小乔木,进行恢复和保护消落带生态系统。

This experiment is based on the restoring of the vegetation and the ecological protection,while keeping sustainable development of the livelihood of the participants should be taken into consideration.In this study,according to the changes of Danjiangkou Reservoir after the impoundment of reservoir,the suit-able trees for hydro-fluctuation belt were selected,aiming at protecting the water quality.Finally,a scien-tific scheme for ecological protection of the reservoir hydro-fluctuation belt was put forward,and the relat-ed tests were conducted.The results showed that in the plain and hill areas,such as Yun county,it would be reasonable to plant the timber species growing faster with the fertile soil,where Populus euramevicana was an ideal candidate. In the barren places,it would be appropriate to choose shrub or small tree such as Morus alba to realize the ecological restoration and protect the ecosystem of hydro-fluctuation belt.