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soil temperature estimation at different depths,using remotely-sensed data

Journal of Integrative Agriculture 2020年第1期19卷 277-290页

作者： HUANG Ran HUANG Jian-xi ZHANG Chao MA Hong-yuan ZHUO Wen CHEN Ying-yi ZHU De-hai Qingling WU Lamin R.MANSARAY College of Land Science and Technology China Agricultural University/Key Laboratory of Remote Sensing for Agri-hazardsMinistry of Agriculture and Rural Affairs/Key Laboratory for Agricultural Land QualityMinistry of Natural ResourcesBeijing 100083P.R.China College of Information&Electrical Engineering China Agricultural UniversityBeijing 100083P.R.China Department of Geography University College LondonLondon WC1E 6BTUK Department of Agro-meteorology and Geo-informatics Magbosi LandWater and Environment Research Centre(MLWERC)Sierra Leone Agricultural Research Institute(SLARI)Freetown PMB 1313Sierra Leone

soil temperatures at different depths down the soil profile are important agro-meteorological indicators which are necessary for ecological modeling and precision agricultural activities. In this paper, using time series of soil temperature(ST) measured at different depths(0, 5, 10, 20, and 40 cm) at agro-meteorological stations in northern China as reference data, ST was estimated from land surface temperature(LST) and normalized difference vegetation index(NDVI) derived from AQUA/TERRA MODIS data, and solar declination(Ds) in univariate and multivariate linear regression models. Results showed that when daytime LST is used as predictor, the coefficient of determination(R^2) values decrease from the 0 cm layer to the 40 cm layer. Additionally, with the use of nighttime LST as predictor, the R^2 values were relatively higher at 5, 10 and 15 cm depths than those at 0, 20 and 40 cm depths. It is further observed that the multiple linear regression models for soil temperature estimation outperform the univariate linear regression models based on the root mean squared errors(RMSEs) and R^2. These results have demonstrated the potential of MODIS data in tandem with the Ds parameter for soil temperature estimation at the upper layers of the soil profile where plant roots grow in. To the best of our knowledge, this is the first attempt at the synergistic use of LST, NDVI and Ds for soil temperature estimation at different depths of the upper layers of the soil profile, representing a significant contribution to soil remote sensing.

关键词： soil temperature land surface temperature normalized difference vegetation index solar declination

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Influence of mulch and poultry manure application on soil temperature,evapotranspiration and water use efficiency of dry season cultivated okra

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International soil and Water Conservation Research 2023年第2期11卷 382-392页

作者： Mutiu Abolanle Busarit Ganiyu Olawale Bankole Idris Adebanjo Adiamo Rasaq Olayiwola Abiodun Olanrewaju Hammed Ologunde Department of soil Science and Land Management Federal University of AgricultureAbeokutaPM.B2240AbeokutaNigeria

Sustainable vegetable production especially during the dry season requires adequate conservation of soil water.This study was conducted to evaluate the sole and interactive effects of mulching(M)and poultry manure(PM)application on soil temperature(ST),crop evapotranspiration(ETc)and water use efficiency(WUE)of okra.The experiment was a Randomized Complete Block Design(RCBD)with three replicates.The treatments were M at 0 and 6t ha^(-1)and PM at 0,10 and 20t ha^(-1).soil temperature was measured using digital thermometer while ETc was determined by water depletion method using a Time Domain Reflectometer.Irrigation at field capacity was applied manually at 2-day intervals.Independent appli-cation of mulch significantly lowered ST while joint application of 20t ha^(-1)PM(PM20)and M signifi-cantly(p≤0.05)reduced ST at 5 cm and 10 cm soil depth compared with the unmulched plots in both seasons.Application of 10t ha^(-1)PM(PM10)without M recorded the highest ETc(43.7 mm),while joint application of PM20 and M reduced ETc by about 93%compared with PM10 only.Okra used water most efficiently when PM20 was applied under mulched plot.There was 62.2%increase in WUE under mulched plots compared with the control while the residual effect of PM10 and M significantly increased WUE by 65.5%.It was evident that M alongside application of PM is a good strategy for regulating ST,moderating ETc and increasing okra WUE,especially during dry season farming.

关键词： Evapotranspiration soil temperature Volumetric water content Water depletion method Water use efficiency

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Interrelationship of soil moisture and temperature to sylvatic plague cycle among prairie dogs in the Western United States

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Integrative Zoology 2021年第6期16卷 852-867页

作者： Cassandra D.PAULING Deborah L.FINKE Deborah M.ANDERSON Department of Veterinary Pathobiology University of MissouriColumbiaMissouriUSA Division of Plant Sciences University of MissouriColumbiaMissouriUSA

Plague,caused by Yersinia pestis,is a flea-borne disease that is endemic in areas throughout the world due to its successful maintenance in a sylvatic cycle,mainly in areas with temperate climates.Burrowing rodents are thought to play a key role in the enzootic maintenance as well as epizootic outbreaks of plague.In the United States,prairie dogs(Cynomys),rodents(Muridae),and ground squirrels(Spermophilus)are susceptible to infection and are parasitized by fleas that transmit plague.In particular,prairie dogs can experience outbreaks that rapidly spread,which can lead to extirpation of colonies.A number of ecological parameters,including climate,are associated with these epizootics.In this study,we asked whether soil parameters,primarily moisture and temperature,are associated with outbreaks of plague in black-tailed prairie dogs and Gunnison’s prairie dogs in the Western United States,and at what depth these associations were apparent.We collected publicly available county-level information on the occurrence of population declines or colony extirpation,while historical soil data was collected from SCAN and USCRN stations in counties and states where prairie dogs have been located.The analysis suggests that soil moisture at lower depths correlates with colony die-offs,in addition to temperature near the surface,with key differences within the landscape ecology that impact the occurrence of plague.Overall,the model suggests that the burrow environment may play a significant role in the epizootic spread of disease amongst black-tailed and Gunnison’s prairie dogs.

关键词： plague prairie dogs soil moisture soil temperature sylvatic cycle Yersinia pestis

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Understanding the soil temperature Variability at Different Depths:Effects of Surface Air temperature,Snow Cover,and the soil Memory

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Advances in Atmospheric Sciences 2021年第3期38卷 493-503页

作者： Haoxin ZHANG Naiming YUAN Zhuguo MA Yu HUANG Key Laboratory of Regional−Climate Environment Research for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China Laboratory for Climate and Ocean−Atmosphere Studies Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking UniversityBeijing 100871China School of Atmospheric Sciences Sun Yat-sen UniversityZhuhai 519082China

The soil temperature(ST)is closely related to the surface air temperature(AT),but their coupling may be affected by other factors.In this study,significant effects of the AT on the underlying ST were found,and the time taken to propagate downward to 320 cm can be up to 10 months.Besides the AT,the ST is also affected by memory effects-namely,its prior thermal conditions.At deeper depth(i.e.,320 cm),the effects of the AT from a particular season may be exceeded by the soil memory effects from the last season.At shallower layers(i.e.,<80 cm),the effects of the AT may be blocked by the snow cover,resulting in a poorly synchronous correlation between the AT and the ST.In northeastern China,this snow cover blockage mainly occurs in winter and then vanishes in the subsequent spring.Due to the thermal insulation effect of the snow cover,the winter ST at layers above 80 cm in northeastern China were found to continue to increase even during the recent global warming hiatus period.These findings may be instructive for better understanding ST variations,as well as land−atmosphere interactions.

关键词： soil temperature surface air temperature soil memory snow cover nonlinear causality analysis

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Changes in soil temperature and water content under mobile soil steam disinfection

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International Journal of Agricultural and Biological Engineering 2021年第3期14卷 140-147页

作者： Zhenjie Yang Xiaochan Wang Muhammad Ameen College of Engineering Nanjing Agricultural UniversityNanjing 210031China College of Mechanical and Electrical Engineering Yunnan Agricultural UniversityKunming 650201China

The soil steam injection method is one of the most effective disinfection methods,and the determination of the steam pipe structure parameters is very important.The steam capillary diameter(SCD)affects the steam flow field in each pipe,which in turn affects the steam changes in the soil flow range and soil temperature(ST).Larger SCD would make lower ST in clay loam,silt loam,and sandy clay loam.The effectiveness of an SCD of 10 mm was verified by a mobile disinfection test at walking speeds of 10 cm/min and 30 cm/min under soil water content(SWC)of 15%and 35%,respectively.The results showed that when the walking speed was 10 cm/min,the initial SWC was proportional to the ST.However,when the walking speed was 30 cm/min,the law was exactly the opposite;that is,the initial water content is inversely proportional to the ST.The research can provide a theoretical research foundation for increasing soil temperature for efficient soil steam disinfection.

关键词： soil steam disinfection steam capillary diameter steam capillary vent soil temperature soil water content

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Alternate row mulching optimizes soil temperature and water conditions and improves wheat yield in dryland farming

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Journal of Integrative Agriculture 2018年第11期17卷 2558-2569页

作者： YAN Qiu-yan DONG Fei LOU Ge YANG Feng LU Jin-xiu LI Feng ZHANG Jian-cheng LI Jun-hui DUAN Zeng-qiang Institute of Wheat Research Shanxi Academy of Agricultural Sciences Department of Earth and Environmental Engineering Columbia University Department of Earth System Science University of California State Key Laboratory of soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences

Straw mulching allows for effective water storage in dryland wheat production. Finding a suitable straw mulching model that facilitates wheat growth was the objective of this study. A 2-year field experiment was conducted to investigate the effects of two straw mulching patterns （FM, full coverage within all the rows; HM, half coverage within alternate rows） and two mulching rates （4.5 and 9.0 t ha^-1） on soil moisture, soil temperature, grain yield, and water use efficiency （WUE） of winter wheat in northern China, with no mulching （M0） as the control. Results showed that mulching increased the soil water storage in all growth stages under high mulching rates, with a stronger effect in later growth stages. Water storage under the HM model was greater in later stages than under the FM model. soil water content of HM groups was higher than that of FM groups, especially in surface soil layers. Evapotranspiration decreased in mulched groups and was higher under high mulching rates. Aboveground biomass during each growth stage under the HM model was higher than that under M0 and FM models with the same mulched rate, leading to a relatively higher grain yield under the HM model. Mulching increased WUE, a trend that was more obvious under HM9.0 treatment. Warming effect of soil temperature under the HM pattern persisted longer than under the FM model with the same mulching rates. Accumulated soil temperature under mulched treatments increased, and the period of negative soil temperature decreased by 9-12 days under FM and by 10-20 days under HM. Thus, the HM pattern with 9.0 t ha^-1 mulching rate is beneficial for both soil temperature and water content management and can contribute to high yields and high WUE for wheat production in China.

关键词： mulching pattern winter wheat soil temperature grain yield water use efficiency

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Mulching type-induced soil moisture and temperature regimes and water use efficiency of soybean under rain-fed condition in central Japan

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International soil and Water Conservation Research 2017年第4期5卷 302-308页

作者： Mohammad Abdul Kader Masateru Senge Mohammad Abdul Mojid Kimihito Nakamura Rural Development Academy(RDA) Bogra-5842Bangladesh Faculty of Applied Biological Sciences Gifu University1-1 YanagidoGifu City 501-1112Japan Department of Irrigation and Water Management Bangladesh Agricultural UniversityMymensingh-2202Bangladesh Graduate School of Agriculture Kyoto UniversityKitashirakawa Oiwake-choSakyo WardKyoto 606-8502Japan

Soybean(Glycine max)is a high water-demand crop and grown under moderate temperature in Japan.To protect the crop from hot summer and to utilize rainfall for its cultivation,selection of appropriate mulching material(s)is crucial.For optimum production of the crop,soil moisture and temperature regimes as well as water use efficiency(WUE)of the crop were investigated under straw,grass,paper,plastic and bare soil(control)mulching under rain-fed condition at Gifu university farm in Japan.The mulching treatments,compared to the control,lowered soil temperature by 2°C at 5 cm depth and 0.5°C at 15 and 25 cm depths.The plastic and straw mulching stored the highest quantity of soil moisture at 5 and 15 cm depths;the bare soil stored the lowest quantity.At 25 cm depth,soil-moisture content was the highest under paper mulch but invariable under the other mulches.Plastic mulching reduced evaporation rate from the soil surface and,consequently,the reduced soil-water consumption(SWC)from the root zone augmented WUE of soybean.The paper mulching,by conserving soil-moisture and reducing soil temperature,provided better crop growth attributes,while the plastic mulching improved WUE of green soybean.Therefore,the plastic mulch performed best in reducing soil-water consumption and increasing WUE,while the paper mulch was good for soil-moisture conservation and temperature modification that increased soybean yield.

关键词： Mulching soil-water consumption soil temperature Water use efficiency

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Evaluating the Capabilities of soil Enthalpy, soil Moisture and soil temperature in Predicting Seasonal Precipitation

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Advances in Atmospheric Sciences 2018年第4期35卷 445-456页

作者： Changyu ZHAO Haishan CHEN Shanlei SUN Key Laboratory of Meteorological Disaster Ministry of Education (KLME)/International Joint Research Laboratory of Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD)Nanjing University of Information Science and Technology (NUIST) School of Atmospheric Science Nanjing University of Information Science and Technology (NUIST)

soil enthalpy （H） contains the combined effects of both soil moisture （w） and soil temperature （T） in the land surface hydrothermal process. In this study, the sensitivities of H to w and T are investigated using the multi-linear regression method. Results indicate that T generally makes positive contributions to H, while w exhibits different （positive or negative） impacts due to soil ice effects. For example, w negatively contributes to H if soil contains more ice; however, after soil ice melts, w exerts positive contributions. In particular, due to lower w interannual variabilities in the deep soil layer （i.e., the fifth layer）, H is more sensitive to T than to w. Moreover, to compare the potential capabilities of H, w and T in precipitation （P） prediction, the Huanghe-Huaihe Basin （HHB） and Southeast China （SEC）, with similar sensitivities of H to w and T, are selected. Analyses show that, despite similar spatial distributions of H-P and T-P correlation coefficients, the former values are always higher than the latter ones. Furthermore, H provides the most effective signals for P prediction over HHB and SEC, i.e., a significant leading correlation between May H and early summer （June） P. In summary, H, which integrates the effects of T and w as an independent variable, has greater capabilities in monitoring land surface heating and improving seasonal P prediction relative to individual land surface factors （e.g., T and w）.

关键词： seasonal precipitation prediction land surface process soil enthalpy soil moisture soil temperature

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Film-mulched continuous ridge-furrow planting improves soil temperature,nutrient content and enzymatic activity in a winter oilseed rape field,Northwest China

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Journal of Arid Land 2018年第3期10卷 362-374页

作者： GU Xiaobo LI Yuannong DU Yadan Key Laboratory of Agricultural soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F University

Film mulching system is a widely employed agricultural practice worldwide. However, the effects of different planting and mulching patterns on soil nutrient content and enzymatic activity have not been well documented. In this study, we examined the impact of four planting and mulching patterns（including control, flat planting without mulching; M1, flat planting with film mulching; M2, ridge-furrow planting with film mulching on both ridges and furrows; and M3, ridge-furrow planting with film mulching on continuous ridges） on the seed yield of winter oilseed rape, soil moisture, soil temperature, soil organic carbon（SOC） content, soil nutrient content, and soil enzymatic activity over three growing seasons from 2012 to 2015 in a winter oilseed rape field in the semi-arid area of Northwest China. Seed yield of winter oilseed rape, soil moisture, soil temperature, enzymatic activities, and contents of nitrate-nitrogen, available phosphorus, and available potassium were all significantly higher in mulching treatments（M1, M2 and M3） than in control treatment over the three growing seasons, whereas SOC content was significantly lower in mulching treatments than in control treatment during 2013–2014 and 2014–2015. Among the three mulching treatments（M1, M2 and M3）, the M3 treatment showed consistently higher seed yield, SOC content, nutrient contents, and enzymatic activities than the other two treatments. Seed yield of winter oilseed rape was 41.1% and 15.0% higher in M3 than in M1 and M2, respectively. SOC content and soil enzymatic activities in the top 0–20 cm soil layers and nitrate-nitrogen content in the top 0–30 cm soil layers were all significantly higher in M3 than in M1 and M2. Therefore, we advise the ridge-furrow planting with film mulching on continuous ridges（i.e., M3） as an efficient planting and mulching pattern for sustainably improving the seed yield of winter oilseed rape and preserving soil fertility in the semi-arid area of Northwest China.

关键词： film mulching soil temperature soil organic carbon soil nutrient content soil enzymatic activity winteroilseed rape Northwest China

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Degradability of biodegradable plastic films and its mulching effects on soil temperature and maize yield in northeastern China

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International Journal of Agricultural and Biological Engineering 2020年第2期13卷 146-153页

作者： Wangwang Zhang Lihong Wang Jiaqi Zhou Kunlun Zhu Shijun Sun College of Water Conservancy Shenyang Agricultural UniversityShenyang 110866China Shandong Tianzhuang Eco-Benign Plastics Technology Co. LtdJinan 250110China

Plastic film is an important resource in agricultural production,but it takes hundreds of years to degrade completely in natural environment.The large-scale use of plastic film will inevitably lead to serious environmental pollution.One way to solve the problem is to develop a substitutable mulching film,such as a biodegradable film that can ultimately be decomposed to water,carbon dioxide,and soil organic matter by micro-organisms.In this study,a 2-year experiment was conducted to determine the degradation properties of a biodegradable plastic film,including degradation rate,surface microstructure,tensile strength and elongation at break,and the effects of different mulching treatments on soil temperature and maize yield.The mulching experiment was conducted with three different biodegradable plastic films with different degradation rates,using a common plastic film and a non-mulched treatment as control.With the addition of the additives for degradation in the biodegradable plastic films,the degradation rates increased significantly,which were 7.2%-17.8%in 2017 and 18.1%-35.2%in 2018 after maize harvesting.However,the degradation occurred mainly on the ridge side.The decrease in tensile strength and elongation was proportional to the degradation rate of the degradable film.The SEM results indicated that the surface microstructures of the biodegradable films were loose and heterogeneous after maize harvesting.Biodegradable plastic film mulching increased the soil temperature at soil depths of 5 cm,15 cm,and 25 cm,over the maize’s entire growth period,by 3.1℃-3.2℃ in 2017 and 1.2℃-2.1℃ in 2018 compared with the non-mulched treatment.The biodegradable plastic film increased the maize yield by 10.4%-14.3%in 2017 and 11.6%-24.7%in 2018.The soil temperature and maize yield increases were statistically significant;however,with respect to maize qualities,there were no statistically significant increases among the five treatments.This study shows that biodegradable plastic film can be used as a substitute for common pla

关键词： biodegradable plastic film film mulching degradation properties soil temperature maize yield

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