| 喻树龙,郭冬,姜盛夏,张同文,范煜婷,张瑞波,秦莉,尚华明,张合理,苟晓霞,刘可祥.天山北坡西部雪岭云杉海拔梯度生态弹性变化[J].沙漠与绿洲气象,2024,18(5): |
| 天山北坡西部雪岭云杉海拔梯度生态弹性变化 |
| Ecological resilience of Picea schrenkiana along altitude gradients in the western section of the northern slope of Tianshan Mountains，China |
| 投稿时间：2024-02-27 修订日期：2024-03-28 |
| DOI： |
| 中文关键词: 雪岭云杉(Picea schrenkiana) 天山北坡 树木年轮 海拔梯度 生态弹性 |
| 英文关键词:Picea schrenkiana north slope of Tianshan Mountains Tree-ring elevation gradient ecological elasticity |
| 基金项目:自治区重点实验室开放课题(2020D04040)、国家自然科学基金(42375196)和国际重点研发计划-政府间国际科技创新专项(2023YFE02700) |
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| 中文摘要: |
| 基于天山北坡西部温泉哈夏林区间隔100m海拔高度采集的雪岭云杉梯度样本的断面积生长量资料,分析该区域树木生态弹性变化。干旱事件是区域生态弹性最主要的干扰因子,高温事件也是干扰因子之一。干扰因子的强度会造成生态弹性梯度特征的变化。在极端干旱年份,哈夏林区梯度生长弹性特征最显著,即中高海拔为强抵抗力和弱恢复力,而低海拔则呈相反态势,并出现生长衰退现象。中旱事件时不同海拔均为强抵抗力和较强的恢复力。高温年份低海拔呈现弱抵抗力和弱恢复力。在发生持续干旱时,不同海拔高度的树木生长均受到遏制,但低海拔衰退强度大于高海拔区域,高海拔区域树木对干旱的适应能力要强于中低海拔。 |
| 英文摘要: |
| Based on the data of basal area growth of Picea schrenkiana collected at 100m intervals along the altitude gradients in the Wenquan-Haxia forest area of the western section of the Northern slope of Tianshan Mountains, this study analyzes the changes in ecological resilience of trees in this region. Drought events are the most significant disturbance factor for regional ecological resilience, while high temperature events are also one of the disturbance factors. The intensity of these disturbance factors can lead to changes in the characteristics of ecological resilience gradients. During extreme drought years, the gradient growth resilience characteristics of the Haxia forest area are most pronounced, with strong resistance and weak recovery at mid- to high altitudes, and the opposite trend at low altitudes, accompanied by growth decline. During moderate drought events, all altitudes exhibit strong resistance and relatively strong recovery. In high temperature years, low altitudes show weak resistance and weak recovery. When drought events persist in the Haxia forest area, tree growth is suppressed at all altitudes, but the decline intensity is greater at low altitudes than at high altitudes. Trees at high altitudes have stronger drought adaptation ability than those at low and mid-altitudes. |
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