摘要
为了寻找促进干旱缺水地区植被恢复的新途径,在青海省大通县和四川省盐源县采用固体水处理、秸杆覆盖处理、对照组等方法进行对比研究。结果表明,固体水能够提供3个月以上的水分给苗木,使苗木在干旱期生长,使用固体水的造林成活率均在90%以上,其中山杏Amygdalussibirica,白榆Ulmuspumila,青杨Populuscathayana,沙棘Hippophaerhamnoides和火炬树Rhustyphina的成活率分别比对照提高了32 6%,26 7%,24 2%,7 4%和61 1%;固体水的释水速度约为4～5g·d-1,后期快于前期,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,其最终成本低于常规造林和覆盖造林的成本。
To find a new way to promote the restoration of vegetation in arid areas, comparative studies of solid-water treatment, straw coverage and controlled groups were conducted in Qinghai Province and Sichuan Province of China. The results showed that solid water could provide water for seedlings for three months during the dry season. The survival rate of seedling with solid water was over 90% on the average. The survival rates of Amygdalus sibirica, Ulmus pumila, Populus cathayana, Hippophae rhamnoides and Rhus typhina were 32.6%, 26.7%, 24.2%, 7.4% and 61.1% higher respectively than the controlled groups. The decomposition rate of solid water was about 4-5 g·d^(-1).The rate at the end was a bit higher than that at the beginning. This provided necessary water for the seedlings in the fast-growing period and increased the survival rate of seedlings. The analysis of integrated cost showed that the technology of applying solid water to afforestation was especially applicable to the arid areas where the survival rate of seedlings was low.
出处
《浙江林学院学报》
CAS
CSCD
北大核心
2004年第2期144-149,共6页
Journal of Zhejiang Forestry College
基金
国家自然科学基金资助项目(30070637)
教育部高等学校博士点基金
骨干教师基金资助项目
关键词
森林培育学
固体水
造林成活率
释水
叶水势
综合成本分析
siviculture
solid water
afforestation survival rate
decomposition
leaf moisture potential
analysis of integrated cost
