固体水在植被恢复中的应用研究

【作者】 招礼军； 李吉跃；

【机构】 广西大学林学院； 北京林业大学资源与环境学院；

【摘要】 为了寻找促进干旱缺水地区植被恢复的新途径,采用固体水处理、秸杆覆盖处理、对照等措施进行对比研究。结果表明,固体水能够提供3个月以上的水分给苗木在干旱期中生长,使用固体水的造林成活率均在90%以上,其中山杏、白榆、青杨、沙棘和火炬树的成活分别比对照提高了32.6%、26.7%、24.20%、7.4%和61.1%:固体水前期的释水速度前期约为4g/d,后期约为5g/d,后期快于早期,正好为苗木进入旺盛生长提供必要的水分,可以较明显地提高造林成功率:综合成本分析表明,固体水造林技术更适合在干旱缺水、造林成活率很低的地区应用和推广。更多还原

【Abstract】 In order to promote afforestation in water-absent region, a new drought-resistant product-solid-water was studied. Comparison on three treatments (solid water; cover with straw; control), the results showed that the solid -water provided water for 3 months, therefore covering the water seedlings’ needs to growth during the whole dry season. In addition, it increased obviously the afforestation survival of Amygdalus sibirica (32.6%), Ulmus pumila (26.7%), Populus cathayana (24.2%), Hippophae rhamnoides (7.4%) and Rhus typhina (61.1%) respectively during the dry season. Furthermore, it was noticed that the decomposition rate of solid-water increased gradually in the time, from 4 gram/day at the beginning to 5 gram /day at the end, and this exactly fits the need of seedlings to growth vigorously. The analysis of integrated cost showed that application and spread of solid-water afforestation technology are rather fit to the regions where it is difficult to raise the survival of seedlings by general afforestation.更多还原