scholarly journals The unprsendant farmland soil monitoring project and feasible remediaiton approach in Taiwan

2018 ◽  
Vol 1 (3) ◽  
Author(s):  
T Y TEH
Keyword(s):  
Soil Pollution ◽  
Pollution Control ◽  
Groundwater Remediation ◽  
Irrigation System ◽  
Sediment Quality ◽  
Field Investigation ◽  
Pollution Sources ◽  
Farming Area ◽  
Farmland Soil ◽  
Irrigation Channels

Soil and groundwater remediation Act was enacted in year 2000. More than ten years has already passed,  Monitoring project has been completed,pollution status has been defined,contaminated sites depollution have been launched,a great progress has been made. This paper majorly to depict the extensive farmland soil qauality monittoring which is unpredent in Taiwan and believe has never been done worldwide. This project was initiated from February 8th, 2002 to August 8th, 2002. The project tasks including digitalization of cadastre, farmland listing, basic information collecting, field investigation, sampling & analysis planning, field sampling, soil sample analysis, data evaluation, suggestion of contaminated farmland control, and analysis of potential pollution sources and transfer routes. 2,251 soil samples,had been sampled from Chang-Hwa County, Yun-Lin County, Nan-Tao County, and Chia-Yi City, and been analyzed in this project. 44% of these samples concentration exceed the soil pollution control standard (Table 1), including 492 farmlands (125.65 ha registered) with total contaminated farming area of 108.38 ha in Chang-Hwa, and 6 farmlands (0.39 ha registered) with total contaminated farming area of 0.39 ha in Nan-Tao County. However, the concentration of samples from Ynu-Lin County and Chia-Yi City do not exceed the soil pollution control standard. To coordinate with the investigation results of the relative project regarding to water and sediment quality of irrigation channels in Chang-Hwa area, the pollution sources are preliminary concluded to be the irrigation channels surrounding the farmlands in Chang-Hwa area. As to the Nan-Tao County, the abandoned brick furnace plants neighboring the farmland are suspected to beThe pollution sources. The results show that the soil of the investigation area in Chang-Hwa County is the most polluted. Base on the Geostatistics study and the distribution of the irrigation channels; the area neighboring the investigated farmland in this project is suspected being polluted. For the farmlands exceeding soil control standard, Geostatistics method is suggested to coordinate with the information of the irrigation system to clarify the contaminated area so as to be the basis of land control and remediation work. As to the farmlands, not being investigated in this project but with high pollution potential according to the Geostatistics study, detail investigations are suggested. Regarding to soil pollution remediation, it is suggested to coordinate with the effluent control and irrigation channel remediationto achieve an all-out success.

scholarly journals Game Theory-Based Analysis of Local Governments’ Behavioral Dissimilation in the Third-Party Soil Pollution Control under Chinese-Style Fiscal Decentralization

Land ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 389
Author(s):  
Caihua Zhou
Keyword(s):  
Local Government ◽  
Soil Pollution ◽  
Pollution Control ◽  
Local Governments ◽  
Central Government ◽  
Fiscal Decentralization ◽  
Third Party ◽  
The Third ◽  
Party Control ◽  
The Third Party

The participation of a third party of the environmental service enterprise theoretically increases the level and efficiency of soil pollution control in China. However, Chinese-style fiscal decentralization may have a negative impact on the behaviors of participants, especially the local government. First, this paper conducts a positioning analysis on participants of the third-party soil pollution control in China and discusses the behavioral dissimilation of the local government under fiscal decentralization. Second, taking the government’s third-party soil pollution control as a case, a two-party game model of the central government and the local government is established around the principal-agent relationship, and a tripartite game model of the central government, the local government, and the third-party enterprise is designed around the collusion between the local government and the third-party enterprise. The results show that Chinese-style fiscal decentralization may lead to the behavioral dissimilation of local governments, that is, they may choose not to implement or passively implement the third-party control, and choose to conspire with third-party enterprises. Improving the benefits from implementing the third-party control of local governments and third-party enterprises, enhancing the central government’s supervision probability and capacity, and strengthening the central government’s punishment for behavioral dissimilation are conducive to the implementation of the third-party soil pollution control. Finally, this study puts forward policy suggestions on dividing the administrative powers between the central and local government in third-party control, building appraisal systems for the local government’s environmental protection performance, constructing environmental regulation mechanisms involving the government, market and society, and formulating the incentive and restraint policies for the participants in the third-party soil pollution control.

Experience and Problems in Planting Winter Wheat in Reclaimed Wasteland in An Oasis Area in Xinjiang, China

2020 ◽  
Author(s):  
Tianyu Wang ◽  
Zhenhua Wang ◽  
Jinzhu Zhang
Keyword(s):  
Soil Pollution ◽  
Drip Irrigation ◽  
Irrigation System ◽  
Soil Salinization ◽  
Chemical Fertilizer ◽  
Water Soluble ◽  
Drip Irrigation System ◽  
Plastic Film ◽  
Reclaimed Land ◽  
Advantages And Disadvantages

<p>Xinjiang is located in the northwest of China and in the hinterland of Eurasia. The area is dominated by basins and deserts, with less rainfall and large evaporation. Therefore, most of the agricultural cultivation in this area is developed in piedmont oases. <br> Shihezi City is located in the middle of Xinjiang and has a typical continental climate. We have carried out long-term follow-up observation on two cultivated lands near Shihezi. Plots 147 # and 148 # were originally used for planting cotton, but due to the shortage of irrigation and the serious problem of soil salinization, cotton plants in these two plots were eventually abandoned. In 2008, local farmers began to use drip irrigation system to replant wheat on fallow land 147 # and 148 #. The outcome shows some achievements have been made. In 2008, the amount of irrigation on 147 # and 148 # was 360mm-405mm, and the yield was 7676kg/hm<sup>2</sup>-8879kg/hm<sup>2</sup>. <br> We believe that there are three main reasons for successful farming on reclaimed land: <br>(1) The reclaimed land was leveled to reduce the difference in land height and improve the uniformity of irrigation. <br>(2) Compared with previous flooding irrigation, the drip irrigation system can better save water and reduces soil salinization; <br>(3) The application of water-soluble chemical fertilizer has changed the traditional fertilization method in the past and improved the efficiency of using fertilizer. <br>After ten years of reclamation and cultivation, what has attracted our attention is that there are also problems in plots 147 # and 148 #: <br>(1) White pollution: In order to reduce soil evaporation brought by local heat, farmers generally use plastic mulching to cover the soil. According to the field observation and our related research, the problem of plastic film residue in the soil is very serious. At present, the density of plastic film residue increases around 16.37 kg/hm<sup>2</sup> per year. <br>(2) Excessive application of chemical fertilizer causes potential soil pollution: Compared with traditional flood irrigation, the amount of fertilizer applied after the drip irrigation system is reduced, but the amount of chemical fertilizer used is still very large, which causes potential soil pollution. <br>(3) The problem of soil salinization always exists: the drip irrigation system can effectively reduce the salt on the surface of the soil during the growth cycle of crops, but the salt deep in the soil always accumulates and cannot be effectively excreted. <br>In view of the above problems, the more effective solutions at present are: <br>(1) Degradable plastic film: The new plastic film can degrade itself and reduce accumulation in soil. <br>(2) New plastic film recycling machine: improve the recovery rate of plastic film. <br>(3) Optimizing irrigation and fertilization scheme: Through field experiments, find out the most reasonable irrigation and fertilization scheme. <br>(3) Salinization control: Different methods such as using an underground pipe to discharge salt and applying soil conditioners are adopted to control the salinization of land, but different saline-alkali land control measures have their own advantages and disadvantages, therefore, further analysis is needed in practice. </p>

scholarly journals Residual characteristics of HCHs and DDTs in soil and dust of some parks in Ulaanbaatar, Mongolia

2014 ◽  
Vol 15 ◽  
pp. 15-20 ◽  
Author(s):  
O Khureldavaa ◽  
Jiang He ◽  
Dekun Hou ◽  
Ruiqing Zhang ◽  
Fujing Zhang ◽  
...  
Keyword(s):  
Soil Pollution ◽  
Pollution Index ◽  
Soil Samples ◽  
Pollution Sources ◽  
Sampling Area ◽  
Pollution Risk ◽  
Usage Rate ◽  
Potential Pollution

The residual characteristics of HCHs and DDTs in park soils and dusts in Ulaanbaatar, Mongolia were determined by GC-ECD to evaluate their potential pollution risk. The residual concentrations of total HCHs and DDTs in the park soil samples were ranged in 11.36-53.14 ng·g-1 and 11.96-24.70 ng·g-1 while it was ranged in 32.28-92.68 ng·g-1 and 13.45-24.41 ng·g-1 in the park dust samples, respectively. We have studied the ratio of α-HCH/γ-HCH in order to determine pollution sources which may come from either technical HCHs or lindane. The study revealed that concentration of DDTs in soil has direct correlation on usage rate of the dicofol and technical DDT in the sampling area. The soil pollution assessments based on the single pollution index of HCHs and DDTs indicated that Ulaanbaatar city’s park soil and dust were not polluted with these compounds.The single pollution index of HCHs reached to 1.85 in A park dust samples，indicating the park dust environment was potentially polluted. DOI: http://doi.dx.org/10.5564/mjc.v15i0.315 Mongolian Journal of Chemistry 15 (41), 2014, p15-20

Studies on the Land Treatment Irrigation System of Municipal Wastewater in Shengyang

1991 ◽  
Vol 24 (5) ◽  
pp. 47-53 ◽  
Author(s):  
Zhengmin Gao ◽  
Tiehang Sun ◽  
Xiangrong Qu
Keyword(s):  
Wastewater Treatment ◽  
Organic Pollutants ◽  
Pollution Control ◽  
Municipal Wastewater ◽  
Irrigation System ◽  
Ecological Engineering ◽  
Terrestrial Ecosystem ◽  
Pilot Scale ◽  
Point Of View ◽  
Land Treatment

To make use of wastewater resources in harmony with nature, relying upon the decomposition capacity of the terrestrial ecosystem with soil-plant-microorganism mechanisms for self-purification, converting of harm into good, an artificial ecosystem involving industrial point pollution control, sedimentation and stabilization ponds, followed by a soil-plant system with special varieties of willow, sorghum and rice was established in pilot scale and its purification function for organic pollutants and essential macronutrients was studied. As the key parameters of environmental quality, BOD5, COD, TOC, N and P were monitored. Furthermore, some selected priority organic pollutants such as DBP, DEHP and their behaviour in the system were determined and evaluated carefully. From the holistic point of view, the results obtained show an excellent performance for wastewater treatment which can match conventional secondary and partially advanced wastewater treatment. Based on the 1986-1989 intensive laboratory and field integrated investigation, a model ecological engineering land treatment system is proposed as a reform of the traditional wastewater irrigation pattern in China.

Tracing Soil Pollution Sources through Forensic Geochemistry

2021 ◽  
Author(s):  
Carlos Boente ◽  
Marco Antonio Guzmán ◽  
Diego Baragaño ◽  
Marcos Escobar ◽  
Gonzalo Márquez ◽  
...  
Keyword(s):  
Soil Pollution ◽  
Pollution Sources

Groundwater Pollution Investigation and Remediation

2015 ◽  
Vol 1092-1093 ◽  
pp. 1150-1154
Author(s):  
Fu Li Qi ◽  
Meng Cai Zhang ◽  
Hui Jin ◽  
Yong Li Li ◽  
Shou Gang Lu ◽  
...  
Keyword(s):  
Pollution Control ◽  
Groundwater Pollution ◽  
Groundwater Remediation ◽  
Foreign Matter ◽  
High Quality ◽  
Pollution Remediation ◽  
Freshwater Resources ◽  
Remediation Technology ◽  
Control Processes ◽  
Living Space

Groundwater is an important part of the human living space and supplies us with high-quality freshwater resources. However, the intrusion of any foreign matter into groundwater may cause groundwater pollution. Once this happens, clearing, control and remediation can be very difficult: not only does it need a lot of money, it is also technically challenging and time consuming. In view of current research on groundwater remediation in and out of China, we propose a package of groundwater pollution investigation, groundwater pollution remediation technology and groundwater pollution control processes with a view to providing theoretical reference for future groundwater pollution remediation efforts.

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