液液流中的亚齐穆塔尔和辐射变化及其对Picea mongolica的透气估计的影响
Xin Liu1,2,3, Li-Ning Song1,2,3, Jin-Xin Zhang1,2,3
1CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Ying yong sheng tai xue bao = The journal of applied ecology
|October 22, 2024
概括
在Picea mongolica树木中,树液流量因方向和深度而异,影响了水消耗估计. 在树干的北侧和东侧0-2厘米深度测量树液流量可以提高准确性.
科学领域:
- 林业林业 林业 林业 林业
- 水文学 水文学
- 植物生理学 植物生理学
背景情况:
- 准确量化树木的用水量对于了解森林生态系统和水资源管理至关重要.
- 蒙古松 (Picea mongolica) 是干旱和半干旱地区的关键物种,但其用水模式需要详细调查.
- 桑液流动力学受到各种因素的影响,包括树干内的亚齐木斯通 (定向) 和辐射 (深度) 变化.
研究的目的:
- 为了研究Picea mongolica树木中果汁流动的亚齐穆特和辐射变化.
- 提供科学基础,通过透气精确量化P. mongolica森林的用水量.
- 为了增强对P. mongolica在Otindag Sandy Land中的水关系的理解.
主要方法:
- 应用散热探针技术来测量液液流量.
- 检查树干内四个主要方向 (东,南,西,北) 和三种深度 (0-2,2-4,4-6厘米) 的液液流.
- 使用不同测量点和深度进行水消耗估计的比较.
主要成果:
- 树脂液流表现出单模式的日间变化,流量按照以下顺序进行:南 > 东 > 西 > 北.
- 汁液流量随着树木深度的增加而显著减少.
- 根据测量方向和深度,对水消耗的估计有很大差异,某些组合导致了显著的高估或低估.
结论:
- 桑液流的亚齐穆特和辐射变化对Picea mongolica树水消耗的估计有很大的影响.
- 拟议的一种方法是将探头安装在干部的北侧和东侧0-2厘米深处,可以有效地减少4.2%的估计误差.
- 这种优化的方法可以更准确地量化个体树木的用水量,改善沙地区的立场水平估计.
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