白龙江干旱河谷不同抗旱树种造林适应性  

Drought Resistance and Afforestation Suitability of Different Tree Species in Bailongjiang Arid Valley

作　　者：刘虹涛 LIU Hongtao(Gansu Bailongjiang Institute of Forestry Science,Lanzhou,730070,China;Gansu Bailongjiang National Forest Ecosystem Research Station,Zhouqu 746300,China)

机构地区：[1]甘肃省白龙江林业科学研究所,甘肃兰州730070 [2]甘肃白龙江森林生态系统国家定位观测研究站,甘肃舟曲746300

出　　处：《四川林业科技》2022年第3期67-70,共4页Journal of Sichuan Forestry Science and Technology

基　　金：白龙江干旱河谷脆弱生态区植被恢复技术研究示范项目(090NKCK119)。

摘　　要：白龙江干旱河谷是长江水系北部的生态脆弱和敏感区,为该区域生态重建和恢复科学选择适宜的造林树种,本研究选择2年生以上酸枣、柠条、狼牙刺、文冠果、荆条和4年生的侧柏为试验材料,通过荒地栽植1年后,统计不同树种成活率,测定抗氧化酶(SOD、POD、 CAT)和渗透调节物质(可溶性糖、脯氨酸和、溶性蛋白)。结果表明:狼牙刺、酸枣和荆条不仅成活率较高,而且植株叶片SOD、POD、 CAT、可溶性糖、脯氨酸和可溶性蛋白含量也较高,说明狼牙刺、酸枣和荆条抗旱性较强,更能适应较为干旱的区域。Bailongjiang arid valley is an ecological fragile and sensitive zone in the north of Yangtze River system. In order to scientifically choose suitable afforestation tree species for ecological reconstruction and restoration in this region, more than 2-year-old Zizyphus jujube, Caragana korshinskii, Sophora davidii, Xanthoceras sorbifolium, Vitex negundo and 4-year-old Platycladus orientalis were chosen as experimental materials. After planting for one year, the survival rate of different tree species were measured, and antioxidant enzymes(SOD, POD, CAT) and osmotic regulation substances(soluble sugar, proline and soluble protein) were determined. The results showed that Zizyphus jujube, Sophora davidii, Vitex negundo not only had higher survival rate, but also had higher contents of SOD, POD,CAT, soluble sugar, proline and soluble protein in the leaves, which indicated that Zizyphus jujube, Sophora davidii,Vitex negundo had stronger drought resistance and were more suitable for the afforestation of the Bailongjiang ecological restoration and reconstruction.

关 键 词：白龙江 干旱河谷 抗旱造林 适宜性 

分 类 号：S728.2[农业科学—林木遗传育种]