Spreading of pruning waste over the soil surface may increase soil organic carbon, thus improving soil physical properties and serving as a source of nutrients and energy for microbial populations. The aim of this study was to test the effect of the environmental conditions and the biochemical composition of pruning waste from avocado, cherimoya, mango and gardens on their decomposition process in a Mediterranean subtropical climate. Bagged pruning and garden waste were placed on the ground at a distance of 1 m around the trunk of the three trees from each crop. The concentrations in C, N, lignin, cellulose, hemicellulose, other extracts and ash were determined at the beginning of the experiment (T0), after six (T6) and 24 (T24) months in the field. Initially, significant differences were detected for all types of waste, especially in lignin, hemicellulose, cellulose and other extracts. No significant differences were found in the N content and the C content in mango pruning waste was significantly lower than that in avocado. The greatest weight loss recorded at T24 (63.2%) was related to the lower content in lignin, cellulose and other extracts. Weight losses and C concentrations showed negative correlations with lignin content. Despite the intense decomposition of all the waste, between 55 and 36.8% of the original weights were recorded at the end of the experiment. Recalcitrant C could be the result of the lignin concentrating in the case of the garden waste applied to the different crops.

中文翻译：

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安达卢西亚（西班牙）亚热带海岸农业系统中袋装修剪废料的矿化

修剪废物在土壤表面的扩散可能会增加土壤有机碳，从而改善土壤物理性质并作为微生物种群的营养和能量来源。本研究的目的是测试环境条件和来自鳄梨、番荔枝、芒果和花园的修剪废物的生化成分对其在地中海亚热带气候中分解过程的影响。将袋装修剪和花园垃圾放置在距离每种作物的三棵树的树干周围 1 m 的地面上。C、N、木质素、纤维素、半纤维素、其他提取物和灰分的浓度在实验开始时 (T0)、在田间 6 (T6) 和 24 (T24) 个月后测定。最初，在所有类型的废物中检测到显着差异，特别是在木质素中，半纤维素、纤维素和其他提取物。芒果修剪废料中的N含量和C含量均未发现显着差异，显着低于鳄梨。在 T24 记录的最大体重减轻（63.2%）与木质素、纤维素和其他提取物的含量较低有关。重量损失和 C 浓度与木质素含量呈负相关。尽管所有废物都强烈分解，但在实验结束时记录了原始重量的 55% 至 36.8%。顽固 C 可能是在花园废物施用于不同作物的情况下木质素浓缩的结果。在 T24 记录的最大体重减轻（63.2%）与木质素、纤维素和其他提取物的含量较低有关。重量损失和 C 浓度与木质素含量呈负相关。尽管所有废物都强烈分解，但在实验结束时记录了原始重量的 55% 至 36.8%。顽固 C 可能是在花园废物施用于不同作物的情况下木质素浓缩的结果。在 T24 记录的最大体重减轻（63.2%）与木质素、纤维素和其他提取物的含量较低有关。重量损失和 C 浓度与木质素含量呈负相关。尽管所有废物都强烈分解，但在实验结束时记录了原始重量的 55% 至 36.8%。顽固 C 可能是在花园废物施用于不同作物的情况下木质素浓缩的结果。