Impact of different reforestation techniques on carbon stocks in soil and biomass of 5-year-old Scots pine crops at the windthrow area

IF 5.4 1区 农林科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY
K. Ziemblińska , M. Jasik , S. Małek , M. Pająk , B. Woś , M. Urbaniak , J. Olejnik
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Abstract

The majority of European forests are managed and influenced by natural disturbances, with wind being the dominant agent, both of which affect the ecosystem’s carbon budget. Therefore, investigating the combined effect of wind damage and different soil preparation practices on forest carbon pools is of great importance. This study examines changes in carbon stocks in the soil and biomass of two 5-year-old Scots pine stands (namely Tlen1 and Tlen2), which were established approximately 2 years after a large-scale wind disturbance in northwestern Poland. These neighboring sites differ in terms of the reforestation methods applied, particularly regarding soil preparation: ploughing disc trenching at Tlen1 and partial preparation through local manual scalping at Tlen2. Using nearby forest soils as the best available reference for the pre-windthrow state, it was estimated that the total carbon stock in the soil (up to 50 cm depth, both organic and mineral) was depleted by approximately 17 % at Tlen1 and 7 % at Tlen2. The between-site differences were around 18 %, which nearly doubled when considering only the top 20 cm of the soil profile. In contrast, the total biomass, as well as the carbon stock in biomass, were significantly higher at the site with soil prepared using moderate ploughing (Tlen1) compared to the area with partial soil preparation (Tlen2). Our findings indicate that ploughing disc trenching, aimed mainly at weed removal and improving soil properties, significantly enhanced Scots pine seedlings’ growth, survival, and development during the first four years after planting. Finally, when both carbon stock estimates are pooled together, regardless of the chosen technique, the growing biomass in the investigated stands did not fully compensate for the carbon losses caused by mechanical soil preparation. However, in the short term, the overall change in the ecosystem’s carbon balance was only slightly negative and comparable between the two sites.

Abstract Image

不同造林技术对背风区5年生苏格兰松作物土壤碳储量和生物量的影响
大多数欧洲森林都受到自然干扰的管理和影响,其中风是主要因素,两者都会影响生态系统的碳收支。因此,研究风害与不同整地措施对森林碳库的综合影响具有重要意义。本研究考察了两个5年生苏格兰松林(即Tlen1和Tlen2)的土壤碳储量和生物量的变化,这两个松树林是在波兰西北部一次大规模风扰动大约2年后建立的。这些邻近的地点在采用的重新造林方法方面有所不同,特别是在土壤准备方面:在Tlen1耕作盘沟和在Tlen2通过当地人工倒灌进行部分准备。利用附近森林土壤作为风前状态的最佳参考,估计在Tlen1和Tlen2中,土壤(深度达50 cm,包括有机和矿物)的总碳储量分别减少了约17%和7%。地点之间的差异约为18%,如果只考虑土壤剖面的前20厘米,差异几乎翻了一番。适度耕作(Tlen1)的土壤总生物量和生物量碳储量显著高于部分耕作(Tlen2)的土壤。研究结果表明,以除草和改善土壤性质为主要目的的盘式沟耕,在播种后4年内显著促进了苏格兰松幼苗的生长、存活和发育。最后,当两种碳储量估算值汇集在一起时,无论选择哪种技术,研究林分中不断增长的生物量都不能完全补偿机械整地造成的碳损失。然而,在短期内,生态系统碳平衡的总体变化仅为轻微的负变化,并且在两个地点之间具有可比性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Catena
Catena 环境科学-地球科学综合
CiteScore
10.50
自引率
9.70%
发文量
816
审稿时长
54 days
期刊介绍: Catena publishes papers describing original field and laboratory investigations and reviews on geoecology and landscape evolution with emphasis on interdisciplinary aspects of soil science, hydrology and geomorphology. It aims to disseminate new knowledge and foster better understanding of the physical environment, of evolutionary sequences that have resulted in past and current landscapes, and of the natural processes that are likely to determine the fate of our terrestrial environment. Papers within any one of the above topics are welcome provided they are of sufficiently wide interest and relevance.
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