The storage of wood chips is important for the biomass supply chain as it compensates for temporal differences in production and consumption. Typical storage-related problems are dry matter and energy losses due to microbial activity.

In extensive field trials, we investigated the storage of spruce wood chips from forest residues (FRC) and from energy roundwood (ERC) with and without rain protection under Central European conditions. Additionally, we examined the storage of unchipped piles.

The results indicate that the investigated factors, i. e. storage duration, season, assortment and rain protection, have a statistically significant influence on moisture content and dry matter loss of wood chips. During five months of storage, the highest decline in moisture content was 22.6 %-points, the highest dry matter loss 11.1 %. In winter, energy losses reached up to 11.3 %. In summer, energy contents did not change or even increased slightly (max. 4.7 %). Pile temperature and dry matter losses were significantly positively correlated in FRC. Formation of different layers within the piles could be detected. Storage performance was better in unchipped than in chipped energy roundwood. Storage of unchipped forest residues was not beneficial concerning energy content, but fuel quality increased due to reduced ash and fine particle content.

Clear best practice recommendations could be drawn regarding wood chip storage under Central European conditions. During winter, FRC should be stored with rain protection or as short as possible while during a dry and warm summer, wood chips can be stored with only few restrictions.

木片的存储对于生物质供应链很重要，因为它可以补偿生产和消费的时间差异。与存储相关的典型问题是微生物活动引起的干物质和能量损失。

在广泛的田间试验中，我们研究了中欧条件下来自森林残留物（FRC）和来自能源圆木（ERC）的云杉木屑的存储，无论有无雨水保护。此外，我们检查了未切碎的堆的存储情况。

结果表明，所研究的因素（即储存时间，季节，种类和防雨保护）对木片的水分含量和干物质流失具有统计学上的显着影响。在储存的五个月中，水分的最大下降幅度为22.6％，最大的干物质损失率为11.1％。在冬季，能量损失高达11.3％。在夏季，能量含量没有变化，甚至没有增加（最大4.7％）。在FRC中，桩温度和干物质损失显着正相关。可以检测到桩内不同层的形成。未切碎的能量储存比碎木屑的能量储存更好。未切碎的森林残留物的存储在能源含量方面没有好处，但是由于减少了灰分和细颗粒含量，燃料质量得到了提高。

可以就中欧条件下的木屑储存提出明确的最佳实践建议。在冬天，FRC应该在防雨的情况下存放，或者在尽可能短的时间内存放；而在干燥和温暖的夏天，木屑的存放几乎没有什么限制。