塔里木河中游地区柽柳地下生物量研究 |
| |
引用本文: | 海依沙尔·哈力木江,努尔巴依·阿布都沙力克,王山. 塔里木河中游地区柽柳地下生物量研究[J]. 安徽农业科学, 2013, 0(12): 5539-5540,5543 |
| |
作者姓名: | 海依沙尔·哈力木江 努尔巴依·阿布都沙力克 王山 |
| |
作者单位: | 新疆大学资源与环境科学学院,新疆乌鲁木齐830046;绿洲生态教育部重点实验室,新疆乌鲁木齐830046 |
| |
摘 要: | 以塔里木河中游植物群落中的建群种多枝柽柳为研究对象,研究地下生物量现状、地下生物量空间分布格局及地下与地上生物量的相关性。研究结果表明,柽柳总生物量约为28.06 kg/m2,约19.7%分布在地上部分,为5.53 kg/m2;根系生物量占80.3%,大约为22.53 kg/m2。柽柳群落的地下生物量与土壤深度负相关,即随土层深度的增加而减小。地下生物量的峰值分布于0~40 cm,约为根系总生物量的38.7%。该研究区柽柳地下与地上生物量回归方程:y=-0.249x2+6.624x-1.356,R2=0.674。可见,地上生物量可解释地下生物量变化的67.4%。在涉及不同研究区域或不同空间尺度的研究时,还需要大量的实测生物量数据对方程进行重新拟合。
|
关 键 词: | 柽柳 地下生物量 垂直分布 塔里木河中游 |
Study on Underground Biomass of Tamarix ramosissima in the Middle Reaches of Tarim River |
| |
Affiliation: | HAIYISHAER Halimujiang et al(College of Resources and Environmental Sciences,Xinjiang University,Urumqi,Xinjiang 830046) |
| |
Abstract: | The underground biomass status,vertical distribution and its relationship with aboveground biomass of Tamarix ramosissima in middle reaches of Tarim River was studied.The results showed that: the biomass of Tamarix ramosissima was 28.06 kg / m2,among which 19.7% was aboveground biomass(5.53 kg / m2) and 80.3% was underground biomass(22.53 kg/m2).Underground biomass decreased with soil depth,and the maximum of underground biomass was found in 0-40 cm(38.7%).The regression equation of underground and aboveground biomass is y =-0.249x2 + 6.624x-1.356,R2 = 0.674.It was clear that aboveground biomass could explain 67.4% underground biomass variation.When referring to research at different spatial scales in different zones,we needed a large number of actual biomass data to fit equation again. |
| |
Keywords: | Tamarix ramosissima Underground biomass Vertical distribution Midstream of Tarim River |
本文献已被 CNKI 维普 万方数据 等数据库收录! |
|