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2015年2月至2016年3月,在浙江省千岛湖库区消落带的不同海拔梯度选用银叶柳(Salix chienii)、池杉(Taxodium ascendens)、水杉(Metasequoia glyptostroboides)、枫香树(Liquidambar formosana)、枫杨(Pterocarya stenoptera)、加杨(Populus×canadensis)、乌桕(Sapium sebiferum)、水竹(Phyllostachys heteroclada)8个树种,采用苗高3.2 m左右大苗造林,进行消落带造林技术研究。结果显示,在千岛湖水位涨落动态影响下,不同树种在不同水位梯度上的造林成活率差异明显。银叶柳能耐没顶水淹,在海拔99 m梯级上全年持续没顶水淹116d的成活率仍达70%;池杉和枫香树较耐水湿和水淹,但不耐没顶水淹,在海拔102 m梯级上持续淹水192 d的成活率仍达60%,但在101 m及以下梯级消落带上由于持续没顶水淹长达21 d或以上而死亡;水杉、枫杨、加杨和乌桕较耐水湿,但不耐高位水淹,更不耐没顶水淹,在海拔103 m梯级上成活率分别为20%,60%,80%和40%,建议种植时考虑最高水位时的苗木出露水面1 m(水杉、枫杨和乌桕)或1.5 m(加杨);水竹能耐一定水淹,不能深度水淹,更不能没顶水淹,在104 m梯级上成活率为40%,其水淹深度最深为0.52 m。
From February 2015 to March 2016, Salix chienii, Taxodium ascendens, Metasequoia glyptostroboides and Liquidambar formosana were selected for different altitudinal gradients in the Qaidam Lake reservoir area of Zhejiang Province from February 2015 to March 2016, Liquidambar formosana, Pterocarya stenoptera, Populus × canadensis, Sapium sebiferum and Phyllostachys heteroclada were used in this study. the study. The results showed that under the dynamic influence of water level fluctuation in Qiandao Lake, the difference in afforestation survival rate of different tree species at different water level gradients was obvious. Silver leaf willow can withstand no top water flooding, at the altitude of 99 m cascade all year without top water flooding 116d survival rate is still up to 70%; Ipomoea fir and Liquidambar is more water-wet and flooded, but intolerant no top water Inundation, the survival rate of continuous flooding at 102 m above sea level for 192 d still reaches 60%, but died in the runoff of 101 m and below due to continuous flooding up to 21 d or above; Metasequoia, maple Poplar, Populus euphratica and Populus euphratica are more water-resistant and wet-tolerant, but are not resistant to high waterlogging. They are even more intolerant with no top water flooding. Survival rates are 20%, 60%, 80% and 40% respectively at an elevation of 103 m. The seedlings exposed to the highest water level are 1 m (Metasequoia glyptostroboides, Maple and Wagtail) or 1.5 m (Populus canadensis). The water bamboo is resistant to some flooding, not to deep flooding, not to the top water flooding. At 104 m steps Survival rate of 40%, the deepest water flooding 0.52 m.