Seasonal soil water dynamics under different tree plants and mulching treatments in the Loess Hilly Region of China

IF 3.9 2区环境科学与生态学 Q1 ECOLOGY

Ecological Engineering Pub Date : 2024-07-26 DOI:10.1016/j.ecoleng.2024.107350

Xing Wang , Kemeng Zhang , Jing Li , Qun Li , Wenjuan Na , Yuankang Gao , Zhiyong Gao

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引用次数: 0

Abstract

There is large-scale deep soil desiccation in the Loess Plateau due to excessive vegetation rehabilitation over the years. It is the key to soil desiccation in the Loess Plateau in response to the lingering concern about the role of plant reintroduced and water restoration in areas with deep soil desiccation. However, not much studies have been done to address this deepening concern. To that end, large field soil columns were used to simulate dry soil and measure dynamic soil water changes in the 0–10 m soil layer under different mulching treatments. The results showed that under severe desiccation of deep soil layer, reintroduced plants relied on local rainfall for normal growth. Here, a new soil water balance emerged in the dry soil layer due to the different water uses of the reintroduced plants. Generally, deep-rooted perennial plants induced severe soil desiccation. Surface mulching treatments strongly influenced soil water restoration, with restoration rates of 23.5 cm/season for stone mulching, 23.5 cm/season for tree branch mulching, 38.8 cm/season for cloth mulching and 30.6 cm/season for white plastic film mulching. The findings of the study are critical for sustainable ecological construction especially as it relates to soil water restoration in Hilly Loess China.

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中国黄土丘陵区不同树木和覆盖处理下的季节性土壤水动态

由于多年来植被恢复过度，黄土高原存在大规模的土壤深层干化现象。这是黄土高原土壤干燥的关键所在，以回应人们对植物再植和水源恢复在土壤深层干燥地区的作用的持续关注。然而，针对这一日益严重的问题所做的研究并不多。为此，研究人员使用大型田间土柱模拟干旱土壤，并测量了不同覆盖处理下 0-10 米土层的动态土壤水分变化。结果表明，在土壤深层严重干燥的情况下，重新引入的植物依靠当地降雨才能正常生长。在这种情况下，由于移栽植物对水分的利用不同，干旱土层出现了新的土壤水分平衡。一般来说，深根多年生植物会导致土壤严重干燥。地表覆盖处理对土壤水分恢复有很大影响，石块覆盖的恢复率为 23.5 厘米/季，树枝覆盖的恢复率为 23.5 厘米/季，布覆盖的恢复率为 38.8 厘米/季，白色塑料薄膜覆盖的恢复率为 30.6 厘米/季。研究结果对可持续生态建设，尤其是中国丘陵黄土地区的土壤水分恢复至关重要。

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来源期刊

Ecological Engineering 环境科学-工程：环境

CiteScore

8.00

自引率

5.30%

发文量

293

审稿时长

57 days

期刊介绍： Ecological engineering has been defined as the design of ecosystems for the mutual benefit of humans and nature. The journal is meant for ecologists who, because of their research interests or occupation, are involved in designing, monitoring, or restoring ecosystems, and can serve as a bridge between ecologists and engineers. Specific topics covered in the journal include: habitat reconstruction; ecotechnology; synthetic ecology; bioengineering; restoration ecology; ecology conservation; ecosystem rehabilitation; stream and river restoration; reclamation ecology; non-renewable resource conservation. Descriptions of specific applications of ecological engineering are acceptable only when situated within context of adding novelty to current research and emphasizing ecosystem restoration. We do not accept purely descriptive reports on ecosystem structures (such as vegetation surveys), purely physical assessment of materials that can be used for ecological restoration, small-model studies carried out in the laboratory or greenhouse with artificial (waste)water or crop studies, or case studies on conventional wastewater treatment and eutrophication that do not offer an ecosystem restoration approach within the paper.