低效杉木林林窗土壤凋落物的持水特性数据集

本研究分析杉木林窗年龄（4-50年）和面积（≤50-≥100m²）对土壤和凋落物持水性的影响。结果显示：林窗年龄是主要影响因素，4-15年中型林窗持水性能最优，其中4年林窗土壤持水性最好，15年林窗半分解凋落物持水能力最强。凋落物持水能力表现为：半分解层＞未分解层，中型＞大型林窗。研究建议采用4-15年中型林窗改造低效杉木林。

This study examined the impacts of stand gap age (4–50 years) and area (≤50–≥100 m²) of Chinese fir forests on the water-holding capacities of soil and litter. The findings revealed that stand gap age was the primary influencing factor. Medium-sized gaps within the 4–15 year age range exhibited the most favorable water-holding performance: specifically, 4-year-old gaps displayed the highest soil water-holding capacity, while 15-year-old gaps had the strongest water-holding capacity for semi-decomposed litter. The water-holding capacity of litter followed the sequence: semi-decomposed litter layer > undecomposed litter layer, and medium-sized gaps > large gaps. This study recommends adopting medium-sized gaps aged 4–15 years to reconstruct low-efficiency Chinese fir forests.