沟谷系统无林区自苗林的侵蚀控制特性

Q4 Agricultural and Biological Sciences
V. Maliuha, V. Khryk, V. Yukhnovskyi, V. Minder, S. Levandovska, I. Kimeichuk, Fedir Brovko, Yu. S. Urliuk
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引用次数: 1

摘要

在乌克兰的土地剥离过程中,在长期未用于农业的土地上出现了所谓的“自种子林”。本研究的目的是了解自苗林的侵蚀控制特性。选取了车尔喀西地区沟谷系统中不同类型木本植物自然更新的12个地点作为研究点。自种子木具有8 ~ 25年不同树龄的结构。多数以混交林为代表,增加了其生物稳定性。它们能更好地适应当前的气候变化。形成了具有较高抗侵蚀性能的自然再生的不均匀龄林分。根据生产力的定性指标,自然更新的差异主要与立地条件有关,特别是与土壤的陡度、斜坡位置和腐殖质层的厚度有关。测定土壤硬度在17.1 ~ 19.0 kg/cm2范围内,属于平均疏松状态。对照土壤的硬度为23.9 kg/cm2,与土壤的压实状态相对应。研究林分土壤透水性为11.1 ~ 27.3 mm/min(对照8.9 mm/min),表现为从最佳到裂口的特征。获得的土壤透水性数据证实了地表径流向地下的快速转移,这阻止了侵蚀过程的发展。虽然需要相当长的时间来形成成熟的人工林,但在沟壑系统的斜坡上的自然再生是成功的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Erosion control properties of self-seeded forests that appeared in forestless areas of ravine-gully systems
Abstract During land unsoldering in Ukraine, so-called “self-seeded forests” appeared on lands that had not been used for agriculture for a long time. The purpose of the research is to find out the erosion control properties of self-seeded forests. Twelve locations of natural regeneration of various types of woody plants on the ravine-gully system of Cherkasy region were chosen as research sites. Self-seeded woods have a structure of different ages from 8 to 25 years. Most of them are represented by mixed stands, which increase their biological stability. They are better adapted to the current climate change. The formation of uneven-aged stands of natural regeneration with high resistance and erosion control properties was noted. According to the qualitative indicator of productivity, the natural regeneration turned out to be different, which was primarily caused by forest sites conditions, in particular, the steepness, the position on the slope, and the thickness of the humus horizon of the soil. The hardness of the soil was determined in the range from 17.1 to 19.0 kg/cm2, which corresponds to an average loose state. The hardness of the soil in the control was 23.9 kg/cm2, which corresponds to its compacted state. The water permeability of the soil under the studied stands was 11.1–27.3 (control – 8.9) mm/min, which characterizes it from the best to chasm. The obtained soil water permeability data confirm the rapid transfer of surface runoff to subsoil, which prevents the development of erosion processes. Natural regeneration on the slopes of the ravine-gully system is determined to be successful, although it requires considerable time for the formation of full-fledged plantations.
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来源期刊
Forestry Studies
Forestry Studies Agricultural and Biological Sciences-Forestry
CiteScore
0.70
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