Effects of vegetation on soil temperature and water content: Field monitoring and numerical modelling

Ni, Junjun; Cheng, Yifeng; Wang, Qinhua; Ng, Charles Wang Wai; Garg, Ankit

doi:10.1016/j.jhydrol.2019.02.009

Cited by 82 publications

(37 citation statements)

References 57 publications

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“…Figure 11a and d show that ARVS may prevent the influence of the atmospheric environment more effectively than simple vegetation protection. In the local dry season of Nanning, the soil temperature in the area covered by vegetation is lower than that in the bare area, which is consistent with the conclusion obtained by Ni et al (2019) in the monitoring experiment.…”

Section: Soil Temperaturesupporting

confidence: 89%

Field study of a new ecological slope protection method applied to expansive soil slope

Zhu

et al. 2021

Arab J Geosci

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This paper used a new type of ecological slope protection method-anchor reinforced vegetation system (ARVS) for shallow protection of the expansive soil slope. We established a test slope with different protection measures in the suburbs of Nanning; the artificial simulated rainfall tests and comprehensive in situ monitoring were carried out on the slope. The protective effect and mechanism of ARVS on expansive soil slopes under the action of rainfall were systematically studied. The results showed that the soil temperature in the ARVS area at a depth of 1.0 m was 1.77 ℃ lower than which in the bare area. ARVS showed superior soil and water conservation performance; when the rainfall intensity was 100 mm/h, the runoff and erosion in the ARVS area were reduced by 36.3% and 84.5% compared with the bare area, respectively. Under the protection of ARVS, the rangeability of soil volumetric water content was significantly reduced, effectively avoiding uneven cracking caused by water content gradients, and weakening the disadvantages of the violent drying-wetting cycle caused by rainfall-evaporation. Compared with the bare area, the vertical and horizontal deformations of the soil in the ARVS area decreased by 56.9% and 70.9% during the monitoring period, respectively. This paper aims to provide a new idea and method for ecological slope protection of expansive soil slopes.

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Section: Soil Temperaturesupporting

confidence: 89%

Field study of a new ecological slope protection method applied to expansive soil slope

Zhu

et al. 2021

Arab J Geosci

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“…The use of mulching resulted in soil water conservation (Fig. 1E, F), as demonstrated in other studies (Baumhardt et al, 2013;Jin et al 2016;Kang et al 2017;Liang et al 2017;Yao et al 2017), and helped plants to maintain lower canopy temperature (Ponge et al 2013;Ni et al 2019). This technique also contributes to increase crop yields and water use e ciency, as demonstrated in a study carried out in semiarid regions of China (Wang et al, 2016).…”

Section: Resultssupporting

confidence: 57%

“…Comparing data of Tables 2 and 3 it is possible to observe that plants cultivated in the soil with mulching showed better physiological performance and higher productions. Yao et al (2017) and (Ni et al, 2019) state that the use of soil cover resulted in lower canopy temperature and favored the assimilation of nutrients, root development, water retention and soil aeration. Our results demonstrate that the analysis of thermometric images accurately demonstrates the positive impact of this technique, showing clear differences between treatments with and without soil cover.…”

Section: Crop Yield Thermal Index Parameters and Soil Cover Relationshipmentioning

confidence: 99%

Thermal imaging to assess the crop water status of melon plants under tropical semi-arid climate

Aragão¹,

Neto²,

Viana³

et al. 2021

Preprint

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Deficit irrigation (DI) strategies and soil cover are highly effective to improve the the water productivity in semi-arid regions. However, the effective monitoring of plant water status under DI strategies becomes crucial. The main objective of this study was to evaluate the use of thermal images to estimate the water status of melon plants cultivated in soil with and without mulching under different irrigation regimes. The experience was carried out from October to December 2018. The study was carried out in a randomized block design, in a split plot arrangement. Plots were composed by soil cover (with and without mulching with plant material), and subplots by 5 irrigation regimes (120, 100, 80, 60 and 40% of crop evapotranspiration-ETc), with five replicates. The following variables were evaluated: canopy temperature (Tcanopy), leaf water potential (Ψleaf), air temperature (Tair), soil moisture, crop yield and the thermal index (ΔT), this being defined as the difference between Tcanopy and Tair. ΔT showed high correlations with crop yield and crop water consumption, evidencing that thermography is an efficient tool to identify the water status of melon plants and could be employed for a proper irrigation scheduling under the tropical semi-arid scenarios. Moreover, the use of thermal images also allowed the identification of beneficial effects of soil cover on leaf water status and crop yield, mainly under moderate DI. The obtained results also demonstrate that mulching is essential to increase melon yield and water productivity in tropical regions.

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“…Plant cover also has an impact on soil temperature and humidity. Of course, long spring-summer-autumn studies with the use of special equipment are necessary to study their seasonal fluctuations, as each period of the growing year has its specifics of soil-plant system functioning (Ni et al, 2019). In the surveyed areas, the values of field moisture were significantly higher than those of nature soils, especially in the 0-10 cm layer (by about 10-20%) (Table 2).…”

Section: Resultsmentioning

confidence: 99%

Toprak İşlemesiz Koşullar Altında Agrochernozyemlerin Temel Fiziksel Özelliklerindeki Değişimler

Suleymanov

Zaykin

Suleymanov

et al. 2020

Yüzüncü Yıl Üniversitesi Tarım Bilimleri Dergisi

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Agriculture is one of the leading branches of the economy in the Republic of Bashkortostan (Russia). Long-term agricultural use of land with the use of plowing has led to a decrease in the thickness of humus-accumulation horizon of soils, reduction of organic matter and nutrients. There is also a deterioration in water-physical properties, the development of water and wind erosion, and a decrease in productivity. Recently, the use of soil conservation farming systems has started, including the use of No-till system. This study presents the results of assessment of physical properties of agrochernozems under conditions of No-ill use. The physical properties of the soil, such as bulk density, humidity, temperature, structural and aggregate composition, were studied using methods and tools accepted in soil science. It is shown that in the upper soil layer (0-20 cm) there is an accumulation of soil moisture, the values of capillary and total moisture capacity, as well as bulk density are approach to the values of nature soil and are optimal for the growth and development of agricultural crops. Structural and aggregate composition is characterized by excellent aggregate state with their excessively high resistance to damaging effects of water. However, in a single case, the soil density increases to a depth of 45 cm. This fact was caused by the impact of heavy agricultural machinery. The declining of soil density can be achieved by treating it with a special bioorganic agent and growing perennial grasses.

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Effects of vegetation on soil temperature and water content: Field monitoring and numerical modelling

Cited by 82 publications

References 57 publications

Field study of a new ecological slope protection method applied to expansive soil slope

Field study of a new ecological slope protection method applied to expansive soil slope

Thermal imaging to assess the crop water status of melon plants under tropical semi-arid climate

Toprak İşlemesiz Koşullar Altında Agrochernozyemlerin Temel Fiziksel Özelliklerindeki Değişimler

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