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在种植和自然森林之间平衡水产和用水效率:全球分析

Shulan Sun^1,2,3, Wenhua Xiang^1,2, Shuai Ouyang^1,2

¹College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha, Hunan, China.

Global change biology

|November 2, 2024

概括

种植森林的水产量通常低于自然森林,差异受气候和树木特征的影响. 在两种森林类型中,优化树林密度是最大化水产和水利用效率 (WUE) 的关键.

科学领域:

林业林业林业林业林业
水文学的水文学
生态生态学生态生态学

背景情况:

气候变暖影响森林水文,使森林与水的关系变得复杂.
种植森林对于碳捕获和木材生产日益重要,但与自然森林相比,它们对水资源的影响不太了解.

研究的目的:

为了在全球范围内比较种植和自然森林之间的水产和用水效率 (WUE).
确定影响不同森林类型水文过程的关键驱动因素.

主要方法:

综合了来自112项已发表的研究中的946个观察结果.
在不同气候区域和特征中比较水产系数和WUE.

主要成果:

种植森林的平均水产系数 (0.29) 比自然森林 (0.34) 低.
种植的森林在干旱,干燥的低湿和潮湿地区的水产较低,只有在干旱地区的WUE更高.
在种植森林中,水产和WUE在各种树木特征组 (密度,高度,LAI,基底面积) 中都较低.
在两种森林类型中,最大限度地提高水产和WUE的最佳树密度在1000-2000根/ha之间.
种植森林中的水产是由树木生长驱动的,而自然森林则受到树结构的影响.
植被森林中的WUE比自然森林更容易受到气候变化的影响.

结论:

自然森林在维持供水方面发挥着至关重要的作用.
树种的选择和树管理,特别是密度控制,对于植物园的恢复和气候变化减缓工作至关重要.

关键词:

天然森林是自然森林.种植园种植园种植园排水系数的排水系数是 ()水的收益率水的收益率水的利用效率是水的使用效率.

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