Rain Floods Research Articles

ИСПОЛЬЗОВАНИЕ КОНЦЕПТУАЛЬНОЙ МОДЕЛИ РЕЧНОГО СТОКА HBV ДЛЯ АНАЛИЗА ПАВОДКОВ НА МАЛЫХ ВОДОСБОРАХ

Based on data of special observations at the former Primorskaya water balance station, the ratio of surface, subsurface, and ground components of rain floods is considered. The widely known HBV conceptual hydrological model is used as a methodological basis of the study. The runoff simulation quality for all stations is assessed as good and satisfactory based on the common statistical metrics. It is shown that the dynamics of the model runoff components is similar to a priori knowledge about the functioning of small catchments. The range of runoff values at the outlet related to the change in the dominant runoff generation type is estimated. An impact of soil cover and relief on the separation of runoff components is noted. The details of the flood formation in the study region are discussed.

Application of the Operator Model for Determination of Maximum Modulus of Spring and Rain Floods at the Rivers within Vistula River Basin inside Ukraine

Purpose. To substantiate the calculated characteristics of the slope influx and channel runoff, as well as to create a modern methodological basis for rationing the characteristics of the maximum runoff of spring and rain floods in the Vistula River basin within Ukraine. Methods. For calculating the maximum runoff of spring and rain floods, statistical processing of data series was performed according to the method of moments and the maximum likelihood method. The three-parametric gamma distribution was used to calculate the runoff layers and water discharges with a rare probability of exceeding. An operator model developed by E.D. Gopchenko (2001) and modified by V.A. Ovcharuk (2017) was used as a calculation to determine the characteristics of the maximum river runoff. To calculate the duration of the slope influx, a complex method was used using the software complex "Caguar", developed at the Department of Land Hydrology of OSENU. Results. The standard statistical characteristics of the time series of the maximum runoff of spring and rain floods are determined, they were used in further calculations to determine the maximum water runoff and runoff layers with a rare probability of exceeding. The paper substantiates and generalizes on the territory all parameters of the basic operator model of maximum runoff formation: coefficients of time non-uniformity of slope influx and duration of slope influx are determined, transformation function is calculated and maximum modules of slope influx for spring and rain floods are determined. Most of the calculated parameters are generalized by territory using GIS or calculation equations with the minimum amount of required input data. Conclusions. As a result of the study, a regional methodology was developed to determine the maximum runoff of spring and rain floods on the rivers of the Vistula River basin. In contrast to previous developments by domestic authors, the advantage is that the use of the operator model allows the use of a single formula, regardless of the genesis of the maximum runoff and catchment area. The obtained results of the research can be used in the planning of hydraulic engineering construction and flood control measures in the Vistula River basin within Ukraine in order to minimize losses and protect the population from the dangerous effects of water. The proposed model can be used for other areas

Analyzing the Application of X-Band Radar for Improving Rainfall Observation and Flood Forecasting in Yeongdong, South Korea

The mountainous Yeongdong region of South Korea contains mountains over 1 km. Owing to this topographic blockage, the region has a low-density rain-gauge network, and there is a low-altitude (~1.5 km) observation gap with the nearest large S-band radar. The Korean government installed an X-band dual-polarization radar in 2019 to improve rainfall observations and to prevent hydrological disasters in the Yeongdong region. The present study analyzed rainfall estimates using the newly installed X-band radar to evaluate its hydrological applicability. The rainfall was estimated using a distributed specific differential phase-based technique for a high-resolution 75 m grid. Comparison of the rainfall estimates of the X-band radar and the existing rainfall information showed that the X-band radar was less likely to underestimate rainfall compared to the S-band radar. The accuracy was particularly high within a 10 km observation radius. To evaluate the hydrological applicability of X-band radar rainfall estimates, this study developed a rain-based flood forecasting method—the flow nomograph—for the Samcheok-osib stream, which is vulnerable to heavy rain and resultant floods. This graph represents the flood risk level determined by hydrological–hydraulic modeling with various rainfall scenarios. Rainfall information (X-band radar, S-band radar, ground rain gauge) was applied as input to the flow nomograph to predict the flood level of the stream. Only the X-band radar could accurately predict the actual high-risk increase in the water level for all studied rainfall events.

The content of heavy metals in the water of Lake Gusinoe (Western Transbaikalia) and its tributaries

Investigation of the transformation of substances in the basin of the Selenga River, the main tributary of Lake Baikal, due to anthropogenic impact under conditions of global climate change, is especially important for Lake Baikal which is a World Natural Heritage Site and the main source of fresh drinking water not only in the region, but also in the world. One of the key research objects in the Selenga River basin, which is subject to significant anthropogenic impact, is the ecosystem of Lake Gusinoe. This study presents the results of analysis of the physical and chemical parameters of the water mass of Gusinoe Lake basin. for the period from 2017 to 2020. Thus, the results on hydrochemical indicators for a long-term period of research of the lake show changes in the chemical composition of water and the concentration of main ions. In 2020, the content of almost all metals was higher than in 2017-2020, which may be due to the rise in the level of Lake Gusinoe and groundwater that began in 2019 and continued in 2020, as a result of rain floods that caused flooding of the coastal territories and the entry of pollutants into watercourses and the lake.

Estimation of the error in calculating the maximum flow of small rivers

The share of the studied small watercourses on the territory of the Russian Federation is 0.01% of their total number. In this regard, when conducting hydrological calculations for the vast majority of projected structures, especially linear ones, the surveyor deals with unexplored rivers. To design and ensure safety in the operation of various water management and hydraulic structures on water bodies, it is recommended to use the Set of Rules SP 33-101-2003 and methodological recommendations for determining the calculated hydrological characteristics in the absence of hydrometric observations. However, until now, a full-fledged analysis of the error in calculating the values of the maximum runoff of a given repeatability according to the methods proposed in the joint venture, in comparison with the observed ones, has not been carried out. The proposed work fills this gap for streams (catchment areas <1 km2) and small rivers (up to 2,000 km2) in the forest zone of the European part of the Russian Federation. Before calculations, the necessary preliminary analysis of the initial observation data on the analogous rivers was carried out in order to assess the quality of the initial hydrometeorological information. The calculation of the maximum water flow rates of streams and small rivers of spring flood is considered using the reduction formula. The maximum urgent water flow rates of rain floods of a given probability were calculated using: the type I reduction formula in the presence of one or more analogous rivers; the type II calculation formula in the absence of analogous rivers; and the type III limit intensity formula. One of the calculation option is considered according to the type I formula when using various analogues that meet the requirements of the joint venture for such. As a result of calculations, it is concluded that for streams and rivers with a catchment area of up to 100 km2, the discrepancy in the values of the measured and calculated 1% of the spring flood flow rate can reach 300%, and rain floods – 2,000%. Such an error in any case can not ensure the safety of the operation of the designed structures

Study of Comprehensive Utilization of Water Resources of Urban Water Distribution Network

China is a country where the levels of water resources per capita are extremely low. With the rapid development of urbanization, water resource shortages have become a bottleneck existing in more and more cities. This study considers the comprehensive management of urban flood control, water supply, water and the ecological environment, catches the main contradiction between “water deficient” and “water rich” in cities, puts forward a comprehensive utilization pattern for urban water resources by emphasizing the utilization of rain–flood resources. After a simulation study, a better regulation pattern is brought out and achieve multiple benefits based on the river system of Gucheng Lake, which is located in Nanjing, Gaochun district, by optimizing conventional regulation. The results show that two parameters, the low water level (LWL) below which Gucheng Lake stops supplying ecological water, and the high water level (HWL) where Gucheng Lake stops importing water from rivers, are the key parameters to decide the regulation benefits, and the LWL of 9 m and HWL of 12 m is the best combination in river network regulation, the annual potential utilizable of rain–flood resources of Gucheng Lake river system can reach 57 million m3 per year, through the comprehensive utilization of the rain–flood resources, the negative effect of flood is effectively reduced and the disaster is controlled on one hand; and the water demand of urban and rural water supply, 100,000 m3/day, is effectively guaranteed as well as the regional ecological environment is improved on the other hand.

Need for system of protection against floods and high waters in mountain and foothill rivers of the Caucasus

The article presents findings on the estimation of fast-forming floods parameters and hydrological forecasts for short-term changes in water content in the foothill and mountain rivers of southern Russia as exemplified by the Krasnodar Krai. The research aims to provide economic facilities and population with better protection against rapidly forming mixed-origin floods. The need to develop a system of protection against floods and high waters on the mountain and foothill rivers of the Caucasus are considered. The floods in the Tuapse region in October 2010, Krymsk in July 2012, Novomikhaylovsky in August 2012 are taken as an example. The causes of floods and high waters on rivers are different. Precipitation is the main and dominant source of floods and high waters (exclusive of natural and anthropogenic discharge breakthrough floods) in river basins. The North-West Caucasus territory and especially its Black Sea coast is distinguished by rain floods at any time of the year. The main reason for floods is rainfall with an intensity of minimum 50-100 mm/day. Considering that 1 mm of precipitation causes the fallout of 1 liter of water over 1 m2 of the earth’s surface, this amount of precipitation is equivalent to the flow of 50-100 liters of water per 1 m2 of mountain slopes. The surface of the slopes cannot immediately absorb and hold such an amount of water, and it rushes down into the rivers’ and streams’ beds. An increase in water content leads to a sharp rise in the water level and flooding of the territories adjacent to the river.

Assessment of temporal and spatial progress of urban resilience in Guangzhou under rainstorm scenarios

In the face of increasingly severe flood disasters, urban resilience is a new path for future urban development. Based on a review of relevant literature on urban resilience, we focusing on flood disaster scenes, present the perspective of “pressure - state - response” to the urban resilience process decomposition based on resilience city theories, disaster theories and ecology theories. We establish the rain flood situation of quantitative evaluation model of city resilience, combined with rough set theory to the urban economy, society and ecological integrated into three subsystems elements to investigate the spatiotemporal resilience of Guangzhou city. The results indicate that the overall urban resilience of Guangzhou from 2015 to 2019 is at a medium level, and shows a slight upward trend, among which the state resilience shows a sharp decline trend. The areas with high comprehensive resilience are mainly distributed in the main urban area, while the areas with weak comprehensive resilience are mainly distributed in the new urban development area. The index of vegetation coverage, regional economic spatial stability and average rainfall showed the most obvious decreasing trend. From 2050 to 2070, the future urban resilience of Guangzhou under each RCPS model will develop to a deteriorating trend, among which, the urban resilience under 2050 RCP2.6 scenario is the best, and the urban resilience under 2070 RCP8.5 scenario is the best. Finally, we put forward a systematic urban resilience improvement strategy from three aspects of pressure resilience, state resilience and response resilience. This study is helpful to provide detailed decision-making assistance for urban resilience construction and case support for quantitative research on urban resilience.

Assessment of the impact of climatic characteristics and landscape changes on the maximum flow of small watersheds

Introduction. The article dedicated to safety of hydraulic structures in small catchments. The research consists in the development of a methodology for assessment of influence of climatic and landscape changes on the maximum flow which determins sizes for the construction elements. The practical significance is due to the assessment of changes in the reliability of hydraulic structures, as well as the degree of potential flooding of territories and soil erosion during rain floods. In scientific terms, the practical significance lies in the justification of changes in the parameters of the formula for the maximum flow calculating. The main goal of the study was to test hypotheses about an increase in the intensity of storm rainfalls and of changes in landscape characteristics during recent decades. Accordingly the next problems were desided: assessment the increase in the daily maximums of precipitation and landscape changes over the past decades; as well as assessing the degree of influence of the above factors on the increase in the maximum water.&#x0D; Materials and methods. The data of the network weather station and the landscape characteristics of the catchment area served as the research materials. Methods of statistical analysis and geoinformation technologies were used as research methods.&#x0D; Results. The main results of the research were the characteristics of the increase in maximum daily precipitation and landscape changes over the past decades and the characteristics of their influence on the increase in maximum water flow, obtained on the base of probability theory and of the surface flow theory.&#x0D; Conclusions. A confirmation of the effectiveness of the proposed methodology for assessing changes in the climatic and landscape characteristics of catchments and their impact on the flood maximums. The hydraulic structures built both in the second half of the twentieth century on small catchments, and in subsequent years when using existing building regulations that do not have proper updating have lost their original reliability.

Integrating Sponge City Concept and Neural Network into Land Suitability Assessment: Evidence from a Satellite Town of Shenzhen Metropolitan Area

Land suitability assessment is fundamental in space control planning and land development because of its effects on land use and urban layout. Rainstorms and waterlogging have become one of the most common natural disasters in the coastal areas of China. As a result, the concept of an ecological sponge city was incorporated into the construction of cities in the future. Taking Shenzhen–Shantou special cooperation zone (SSCZ), we constructed a storm flooding model based on the SCS flow generation model and GIS to explore the spatial distribution characteristics of the flooding risk in a rainstorm of 100-year lasting 1 h. Combined with population and economic indicators, a radial basis function (RBF) network was utilized to evaluate the environmental risk, the vulnerability of disaster-bearing bodies, and the rain–flood resilience of sponge cities. The self-organizing feature mapping (SOFM) model was used for cluster analysis. Spatial differences were found in the construction suitability of the study area. A suitable construction area (73.59% of the entire area) was located downtown. The construction of the artificial spongy body in the highest vulnerable area (3.25%) needs to be strengthened. The control construction area (3.3%) is located along the banks of the river, with relatively high risk and low resilience of flood control engineering. Ecological construction (19.85%) serves as the sponge body of ecological buffer. The factors of waterlogging, ecology, population, and economy could be integrated comprehensively by applying neural network methods for urban planning and construction.

Simulation of non-stationary two-phase mass transfer in a large reservoir

The Kuibyshev Reservoir was formed on the Volga River and is the largest in Eurasia. The length of the reservoir along the Volga is 510 km with its maximum depth of 41 m and average depth of 8 m; the area of water mirror is 6,450 km2. Conditions of runoff formation in catchment area, as well as seasonal and daily regulation are the reasons for unsteady regime of the reservoir. Specificity of flow control in the Kuibyshev Reservoir predetermines water masses motion, flow speed pattern, as well as degree of water saturation with suspended sediments and, therefore, reservoir bed siltation intensity. The lowest flow velocity in the reservoir is observed in summer-autumn period of year; at this time, the reservoir bottom is reshaped least actively. During spring filling, flow velocity in the reservoir is at maximum, hence, favourable conditions to transfer small and large fractions of suspended sediments are created. Most of them enter the reservoir during its spring time filling, although sometimes, sediments maximum was observed earlier, before reaching the peak of flood wave in the reservoir. Flow pattern unsteadiness leads to increase or decrease in flow transfer capacity and, hence, changes in bottom levels. Complex configuration of banks, large depth gradients and basin morphology’s particulars pre-determine instability of sedimentation processes in water area. 3D hydrodynamic model of the reservoir (A. Rakhuba) forms the basis for calculating bottom level motions of the Kuibyshev reservoir. This model is supplemented with analytical formula for sediment consumption (M. Shmakova) and hydraulic ratios to calculate erosion and sediments accumulation (M. Shmakova). Four ice-free months runoff simulation of the Kuibyshev reservoir includes the following main water content phases: low water period and periods of snow flood and rain floods. The study of spatial and temporal patterns of bottom reshaping has shown that greatest intensity of such reshaping occurs during the period of large level gradients, i.e. high water. Flood swelling is featured by intensive bottom erosion. When flood recesses, transfer capacity decreases that leads to sedimentation. The greatest motions in bottom reshaping occurs in the places of channel contraction, which is explained by sharp changes in channel capacity.

Flow rate regime of the Western Urals’s rivers

The flow rate is one of the most important elements of the river’s water regime. Establishing patterns in river flow rates’ changes within a year and by season is of great importance for the hydrological forecasts for spring floods, rain floods and hydrological calculations. By now, there are few publications on this area, both in Russia and abroad. The initial data were divided into 5 hydrological seasons – winter and summer low water, rise and fall of spring floods and autumn rain floods. For each season, an analysis of river flow rate over a period (1936-2013) was done. The average flow rate in rivers varied greatly depending on the water regime’ phase and the type of terrain in which the river flows. For all seasons, the amplitude of fluctuations in the flow rate on the plain rivers is less than on the mountain ones. So, in mountain rivers, flow rates vary from 0.04 to 2.42 m/s, and on flat rivers from 0.02 to 1.43 m/s. As well the pairwise and multiple correlation coefficients of flow rates for each morphometric and catchment characteristics were calculated. The highest correlation coefficients were obtained for the dependency between the average flow rate and the watershed elevation (0.30-0.75) and the watershed slope (0.42-0.76). The multiple correlation coefficients between the average flow rate and all catchment’s morphometric characteristics varied from 0.97 to 0.99. Results verification on an independent data demonstrated that the relative error was on average 2%.

Assessment of irrecoverable retention of liquid atmospheric precipitation by meadow grass stands of the Middle Urals

The process of retaining precipitation by grass vegetation is important in the processes of moisture circulation in forest landscapes. At the same time, there is an erroneous opinion that grasses are not able to retain a significant amount of rain moisture, which further forms the river flow. For this reason, the question remains poorly understood. In turn, grass stands are able to retain rainfall on their leaves in whole or in part. It depends on the duration and intensity of the rain. The leaves of grass stands have a specific morphology and are arranged more vertically than the leaves of woody plants; therefore, moisture on the leaves of grasses is held in film and drip forms (in woody plants-only in drip). When droplets roll down the stem, water is trapped in bowl-shaped recesses or funnels of grass leaves. The article discusses the relationship of precipitation and vegetation. The authors conducted field experiments on the retention of rainfall by grasses that grow in the landscapes of the Middle Urals. The experiments consisted of artificial sprinkling of grass samples and their subsequent weighing (weight experiments). In the course of the experiments, the connections were developed for the retention capacity of rain deposited on the leaves of species of grass vegetation with the leaf surface area of grass stands and their green mass. The magnitude of the loss of rainfall on grass stands is comparable with the magnitude of the rainfall of individual rains. According to the results of the experiment, it was found that under the forest canopy, the interception of precipitation is 0.1–0.2 mm, in the clearings – 1–2 mm, in the clearings – 2–4 mm. The results can be used to assess the actual rainfall to the surface of the soil and to calculate the change in the discharge of water from rain floods on rivers as a result of forest successions.

Urban Rain Flood Ecosystem Design Planning and Feasibility Study for the Enrichment of Smart Cities

The urban flooding situations have arisen in the modern scenario of urbanization due to climatic changes. This work contributes to designing a planned and feasible urban rain flood ecosystem to promote the construction of a sponge city. It has various advantages of improving the water environment, controlling urban waterlogging, reducing runoff pollution, improving river and lake water quality, recycling rainwater resources, replenishing groundwater, and many more. This paper combines the design methods and advantages of the design results formed in decades using traditional regulation and utilizing it for the present study. It reconstructs and integrates the traditional regulation and sponge city construction requirements, thereby providing a feasible urban rain-flood ecosystem in the industrial and smart city scenario. Finally, the regulation of new paddy areas in Yanjin city of China is considered for experimentation, and the design of the regulation is applied using this setup. The design results obtained from the test of sponge city construction have operability and can improve the urban environment and enhance the vitality of the city. The control plan’s design results integrating the sponge city idea can provide effective technical support and guarantee the overall urban environment. The work presented in this article can assess and plan the flood mitigation measures to monitor this type of situation leading to flooding risk reduction in smart cities.

The Influence of Urbanization on Storm Runoff

With the development of economy society, urbanization process are accelerated, the tension of the urban land using leads that the cities develop to the low-lying parts, and even occupy river, landfill ditch pond, it makes perched water space of the city narrow, rainfall runoff coefficient increasing, the confluence time speeding up, it increases urban flood risk. Urbanization has changed the urban hydrologic cycle characteristics, so as to make the urban rain flood characteristics changing, it easily causes short duration rainstorm seeper-waterlogging, so as to directly influence the urban residents’ lives and causes great economic losses, even casualties. City is the political, economic and cultural center, once suffered from floods, it will cause great political influence and economic losses, so, it’s necessary to analysis urban storm flood reason and put forward the corresponding countermeasures. This paper mainly discusses the urban waterlogging reason and influence on storm runoff, and discusses the countermeasures.

Научное обеспечение мелиорации в криолитозоне Якутии в условиях изменения климата

The review presents data from studies on climate change in the Arctic and subarctic regions of Russia It is showed, that climate changes unevenly within different regions and seasons. In Yakutia there is a tendency of more frequent events, such as: unexpected spring floods, summer-autumn rain floods, heavy precipitation in winter and other phenomena resulted in hydrodynamic accidents at low-pressure water management structures as well as water supply decrease for reclamation purposes. Takin into account the results of the analysis, it can be assumed that the adaptive technologies application under conditions of climate change in order to increase water availability in the rural areas of both Yakutia and Subarctic zones is a fundamental direction of scientific research in the field of land melioration in the cryolithozone of Yakutia in the context of climate change, which requires research updating to improve methods, new technical, constructive and technological solutions in hydraulic amelioration.

Features of water balance in the Selenga and Onon river basins during the formation of rain floods

Floods are characterized by non-periodic and short-term rise in the water level in the river, which can lead to catastrophic consequences and large material damage. The aim of this work is to study in detail the components of the water balance of the river basin, which affect the amount of flood runoff. The objects of study are the rivers of Eastern Siberia Selenga and Onon rivers. For the work, materials of long-term observations of the hydrometeorological network of the Trans-Baikal UGMS were used, as well as the database of the GPCC atmospheric precipitation climatology center. The methodological basis was a comprehensive hydrological and geographical analysis of the processes of flood runoff, namely the water balance method. In the course of the study, a geographical analysis of the factors of floods in the conditions of the steppe, forest-steppe and taiga zones of Eastern Siberia was carried out. For a thirty-year period of hydrometeorological observations in the basins of the Selenga and Onon rivers, graphs of changes in water discharge over time (hydrographs) were constructed and genetically related values of flood runoff and flood-forming precipitation were calculated. The unity of landscape characteristics and climatic features determine the hydrological indicators of the river in its different sections, which gives an overall picture of the hydrological indicators of the river network as a whole. According to the ratio of the maximum discharge of water of various origins, spring floods and summer floods, in the basin of the river Selenga and Onon groups of rivers were identified according to the prevailing origin of maximum flow. For the rivers of the Selenga and Onon basins, fluctuations in river runoff and atmospheric precipitation were investigated, and their relationships with the characteristics of atmospheric circulation were established. Difficulties in the analysis of hydrometeorological processes for the considered river basins are their transboundary location.

Modeling of rare rain floods on the example of middle rivers of Angara basin

The paper presents the results of creating mathematical models for predicting the maximum water discharge of rare rain floods and an algorithm for the probabilistic assessment of such hydrological phenomena. The developed models are implemented to describe the catastrophic flood observed on the river Iya at Tulun. The prognostic and actual values of the maximum water levels are compared, and the likelihood of a rare hydrological event with a dispersion interval for given significance levels is obtained. The results are important for warning the public about the dangers and designing protective structures.

Simulating Flash Floods in Small Rivers of the Northern Caucasus with the Use of Data of Automated Hydrometeorological Network

Examples are given for numerical modeling of rain-induced flash floods in mountain areas based on actual and forecast data on precipitation. The calculated hydrographs are compared with the data of hydrometeorological network and calculations of other authors. Two hydrological models were applied: STREAM 2D CUDA, based on numerical solution of the shallow water equations in a two-dimensional (horizontal) formulation using an original algorithm, and KW-GIUH―a Geomorphological Instantaneous Unit Hydrograph model, based on kinematic wave equation. The direct numerical simulation of level regimes at the passage of flood wave and the incorporation of the accumulation of a part of flood flow by reservoirs–traps in the dynamic regime are new scientific results in hydrology. It is concluded that both models can be effectively used to forecast rain floods, in case reliable data on precipitation are available.

Pesticide treatment in biobed systems at microcosms level under critical moisture and temperature range using an Orthic Solonchaks soil from southeastern Mexico amended with corn husk as support

Agriculture effluents from cleaning and handling equipment used in pesticide applications can contaminate superficial and groundwater sources when not correctly disposed of. Biobeds using soil enriched with amendments represent a viable technology to control and minimize pesticide pollution of soil and water in farmlands. They are usually installed outdoors without protection, making them vulnerable to rain flooding, lack of moisture, drought, and intense heat or cold. Temperature (T) and moisture (M) of the biomixture are considered two of the most important physical factor affecting pesticide dissipation. This study aimed to evaluate the effect of T and M on the dissipation of five of the most used pesticides (carbofuran, atrazine, 2,4-D, diazinon, and glyphosate) in Yucatan State, Mexico. Three experiments using miniaturized biobeds considering optimal temperature and moisture (T of 30 ± 2 °C and 90% water holding capacity [WHC]) were performed. The optimal dissipation time and the effect of T, M variations, and volatilization was determined. The optimal dissipation time was over 14 days. Carbofuran was the least dissipated pesticide and glyphosate the most. The primary factor affecting pesticide dissipation was T (P < 0.05), reaching rates of dissipation of 99% at 45 °C. Variations of M in the biomixture were not significant on pesticide dissipation (P > 0.05). The white-rot fungi were observed; its presence was related to increments of T. Head Space analysis (at 45 °C) showed low pesticide volatilization (≤0.03%) for all pesticide used were quantified; water vapor condensation could reduce the pesticide volatilization for experimental conditions.