The response of chlorophyll fluorescence parameters characteristics and spectral reflectance in New sugarcane 22(T22) were studied under 4 different water treaments in pots. The results showed that, except qN increased, other chlorophyll fluorescence parameters as Fv/Fm, PS ¢ò, rETR and qP decreased with increasing of water stress. Photo system can be injuried by drought, the injury will be further intensified as water stress exacerbated. The general trend of spectral curve was consistent under different water treaments, the same peaks and valleys, However, the band reflectance values were different, the canopy reflectance of most bands were CK
{"title":"Response of Sugarcane Chlorophyll Fluorescence Parameters and Spectral Reflectance to Water Stress in Elongation","authors":"Haibo Chen, Xiaodong Zheng, Jiuhao Li, Jingdong Zhang, Xinwu Xu","doi":"10.1109/CDCIEM.2011.385","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.385","url":null,"abstract":"The response of chlorophyll fluorescence parameters characteristics and spectral reflectance in New sugarcane 22(T22) were studied under 4 different water treaments in pots. The results showed that, except qN increased, other chlorophyll fluorescence parameters as Fv/Fm, PS ¢ò, rETR and qP decreased with increasing of water stress. Photo system can be injuried by drought, the injury will be further intensified as water stress exacerbated. The general trend of spectral curve was consistent under different water treaments, the same peaks and valleys, However, the band reflectance values were different, the canopy reflectance of most bands were CK","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":"281 1","pages":"981-984"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79040770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Organic matter (OM) is important for ammonium sorption in lake sediments, but as a matter of fact, there is no general consensus about the effects of OM on ammonium adsorption behavior. In this study, the sediment samples of different OM contents and the different components of organic matter were gained from Wuli Lake sediment through pretreatment, then the ammonium adsorption kinetics and thermodynamics processes were investigated without taking the mineralization of OM into account in simulating laboratory condition, especially analyzing the ammonium adsorption mechanism and adsorption contribution of the different component of OM using scan electronic microscope (SEM)techniques. The results show that the ammonium adsorption on sediments was effected by the OM content and the humified degree of OM simultaneously, The different components of OM had different surface characteristics, and the order of ammonium adsorption capacity was HA>HKB>KB>BC;Controlled by the humified degree of OM, the accessibly young OM (HA) rather than the total OM was a factor in the adsorption of ammonium.
{"title":"The Effects of Organic Matter on Ammonium Adsorption in Wuli Lake Sediments","authors":"Juan Wang, Yuejin Zhang","doi":"10.1109/CDCIEM.2011.291","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.291","url":null,"abstract":"Organic matter (OM) is important for ammonium sorption in lake sediments, but as a matter of fact, there is no general consensus about the effects of OM on ammonium adsorption behavior. In this study, the sediment samples of different OM contents and the different components of organic matter were gained from Wuli Lake sediment through pretreatment, then the ammonium adsorption kinetics and thermodynamics processes were investigated without taking the mineralization of OM into account in simulating laboratory condition, especially analyzing the ammonium adsorption mechanism and adsorption contribution of the different component of OM using scan electronic microscope (SEM)techniques. The results show that the ammonium adsorption on sediments was effected by the OM content and the humified degree of OM simultaneously, The different components of OM had different surface characteristics, and the order of ammonium adsorption capacity was HA>HKB>KB>BC;Controlled by the humified degree of OM, the accessibly young OM (HA) rather than the total OM was a factor in the adsorption of ammonium.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":"13 1","pages":"1414-1417"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82989573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bosten Lake, which locates in arid and desert zone, is the largest lake in Xinjiang, and is the largest inland freshwater lake in China. It has giant value in environment, ecology and economy. The water level of Bosten Lake has taken place tremendously in the recent 50 years, the water level descended from 1048m above sea level in 1958 to that of1045m in 1987, and ascended from 1045m to 1048.9m during the period of 1988¡ª2002, it is in the highest level now. According to the records in recent 50 years, this paper analyzed the effect of human activities, restored the water level of natural environment quantitatively. The research results show that the change of human¡¯s effect undergo the process from weak to strong to weak, in which, the effect of human activities is the strongest from 1970s to 1980s, the effect has been weakened since 1990s.
{"title":"The Impact of Human Activities on the Water-Level Changes of Bosten Lake","authors":"Gao Huazhong","doi":"10.1109/CDCIEM.2011.70","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.70","url":null,"abstract":"Bosten Lake, which locates in arid and desert zone, is the largest lake in Xinjiang, and is the largest inland freshwater lake in China. It has giant value in environment, ecology and economy. The water level of Bosten Lake has taken place tremendously in the recent 50 years, the water level descended from 1048m above sea level in 1958 to that of1045m in 1987, and ascended from 1045m to 1048.9m during the period of 1988¡ª2002, it is in the highest level now. According to the records in recent 50 years, this paper analyzed the effect of human activities, restored the water level of natural environment quantitatively. The research results show that the change of human¡¯s effect undergo the process from weak to strong to weak, in which, the effect of human activities is the strongest from 1970s to 1980s, the effect has been weakened since 1990s.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":"41 1","pages":"1879-1882"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81890197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
While informationization is now the main direction and objective of agricultural development£¬digital agriculture is the key technique to realize the agro-informationization and an important means to solve the present problems of¡°agriculture£¬farmer and rural area¡±. In this paper, the development of digital agriculture in an hui province is discussed£®Besides£¬some problems were pointed out. Further more £¬ a application mode suitable for Anhui developing digital agriculture should be worked out£®
{"title":"Probing into Application Mode of Digital Agriculture in Anhui Province","authors":"Sheng Baozhu, Chen Lei","doi":"10.1109/CDCIEM.2011.570","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.570","url":null,"abstract":"While informationization is now the main direction and objective of agricultural development£¬digital agriculture is the key technique to realize the agro-informationization and an important means to solve the present problems of¡°agriculture£¬farmer and rural area¡±. In this paper, the development of digital agriculture in an hui province is discussed£®Besides£¬some problems were pointed out. Further more £¬ a application mode suitable for Anhui developing digital agriculture should be worked out£®","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":"1 1","pages":"2165-2170"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89554822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Hu, Q. Sun, F. Lei, Qingfeng Meng, Lei Hu, Zhongyi Yu
In this paper, the principle of a measuring device on thermal response test is introduced and a three-dimensional numerical model is developed. What¡¯s more, the effect of testing time, starting time point, ending time point and volumetric specific heat on the calculation results of the thermal response test by two variable parameter fitting method and three-dimensional numerical model are also discussed. It is validated that the volumetric specific heat is not sensitive to the thermal conductivity of the soil and has a little effect on borehole thermal resistance. The initial soil temperature, the end data point and start data point all affect the thermal conductivity and borehole thermal resistance to some extent. An enough length of testing time should be remained.
{"title":"The Influencing Factor on Test of Parameter of the Rock-Soil Thermal Properties","authors":"P. Hu, Q. Sun, F. Lei, Qingfeng Meng, Lei Hu, Zhongyi Yu","doi":"10.1109/CDCIEM.2011.553","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.553","url":null,"abstract":"In this paper, the principle of a measuring device on thermal response test is introduced and a three-dimensional numerical model is developed. What¡¯s more, the effect of testing time, starting time point, ending time point and volumetric specific heat on the calculation results of the thermal response test by two variable parameter fitting method and three-dimensional numerical model are also discussed. It is validated that the volumetric specific heat is not sensitive to the thermal conductivity of the soil and has a little effect on borehole thermal resistance. The initial soil temperature, the end data point and start data point all affect the thermal conductivity and borehole thermal resistance to some extent. An enough length of testing time should be remained.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":"44 1","pages":"2318-2322"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89905886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
According to the general constitutive equation of granular flow, impact of size fractal distribution on porosity and internal friction angle was studied experimentally with large-scale indoor relative densitometer and direct shear apparatus. The results show that, under the condition of the same physical density, elastic recovery coefficient and the geometric mean median granular size, porosity increases with fractal dimension increasing, meanwhile, the internal friction angle, particle concentration, shear stress and normal stress coefficients declines. Further more, in term of analysis on impact of size fractal distribution on flow behavior of granular flow system, it is found that, as for the system with smaller fractal dimension, shear stress is large and the fluid is poor and robustness is strong, On the contrary, as for the system with larger fractal dimension, shear stress is small and the fluid is good and sensitivity is strong. The discussion focuses on the mechanism of impact of fractal characteristics on collapse flow behavior of granular material, which offers a new idea for the study of granular flow system.
{"title":"Impact of Size Fractal Distribution on Flow Behavior of Granular Flow System","authors":"Gao Zhao-ning, Li Ying-ming","doi":"10.1109/CDCIEM.2011.404","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.404","url":null,"abstract":"According to the general constitutive equation of granular flow, impact of size fractal distribution on porosity and internal friction angle was studied experimentally with large-scale indoor relative densitometer and direct shear apparatus. The results show that, under the condition of the same physical density, elastic recovery coefficient and the geometric mean median granular size, porosity increases with fractal dimension increasing, meanwhile, the internal friction angle, particle concentration, shear stress and normal stress coefficients declines. Further more, in term of analysis on impact of size fractal distribution on flow behavior of granular flow system, it is found that, as for the system with smaller fractal dimension, shear stress is large and the fluid is poor and robustness is strong, On the contrary, as for the system with larger fractal dimension, shear stress is small and the fluid is good and sensitivity is strong. The discussion focuses on the mechanism of impact of fractal characteristics on collapse flow behavior of granular material, which offers a new idea for the study of granular flow system.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":"1 1","pages":"1545-1548"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90680543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Three dominant bacteria of A-1, B-1 and C-1 for phenol degradation were screened by domestication. Then study on the treatment efficiency of phenol by the three dominant bacteria was carried out under different concentration of phenol wastewater. The results showed that phenol removal efficiency decreased as the phenol concentration increasing. The phenol removal efficiency rates achieved 46.74%, 51.43% and 23.08% by A-1, B-1 and C-1 in24h when phenol concentration was 50 mg•L-1, and 70.22%,75.19% and 20.43% when concentration was 100 mg•L-1. The best degradation efficiency achieved by the bacterium B-1. Lastly, effect of reaction time, pH and temperature on phenol degradation with B-1 was studied. The result showed when reaction time was 48h, pH was 7, temperature was 30¡æ, phenol and COD removal efficiency achieved about 50% and 30%, respectively.
{"title":"Study on Screening of Dominant Bacteria for Phenol Degradation","authors":"Lan Shanhong, Wu Xiuwen, Xu Ping-ru","doi":"10.1109/CDCIEM.2011.483","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.483","url":null,"abstract":"Three dominant bacteria of A-1, B-1 and C-1 for phenol degradation were screened by domestication. Then study on the treatment efficiency of phenol by the three dominant bacteria was carried out under different concentration of phenol wastewater. The results showed that phenol removal efficiency decreased as the phenol concentration increasing. The phenol removal efficiency rates achieved 46.74%, 51.43% and 23.08% by A-1, B-1 and C-1 in24h when phenol concentration was 50 mg•L-1, and 70.22%,75.19% and 20.43% when concentration was 100 mg•L-1. The best degradation efficiency achieved by the bacterium B-1. Lastly, effect of reaction time, pH and temperature on phenol degradation with B-1 was studied. The result showed when reaction time was 48h, pH was 7, temperature was 30¡æ, phenol and COD removal efficiency achieved about 50% and 30%, respectively.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":"15 1","pages":"1781-1784"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90326984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The process and action mechanism of the copper wastewater adsorption accomplished by ferric salt and cerous salt modified water granulated slag were studied in this paper. Results showed that under the conditions of room temperature of 20¡æ, dosage of 6g/L, pH 7, reaction time of 60min to treat 100mL20mg/L copper wastewater, the removal rate reached 93.64%. The adsorption of modified water granulated slag to copper fits the Temkin adsorption isotherm best and the result of linear transformation of adsorption isotherm is qe=20.71lnCe-4.2413, R2= 0.9531.
{"title":"Treatment of Wastewater Containing Copper by Modified Water Granulated Slag","authors":"Lirong Chen, Feihu Jia, Xin Meng","doi":"10.1109/CDCIEM.2011.518","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.518","url":null,"abstract":"The process and action mechanism of the copper wastewater adsorption accomplished by ferric salt and cerous salt modified water granulated slag were studied in this paper. Results showed that under the conditions of room temperature of 20¡æ, dosage of 6g/L, pH 7, reaction time of 60min to treat 100mL20mg/L copper wastewater, the removal rate reached 93.64%. The adsorption of modified water granulated slag to copper fits the Temkin adsorption isotherm best and the result of linear transformation of adsorption isotherm is qe=20.71lnCe-4.2413, R2= 0.9531.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":"1 1","pages":"2370-2374"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83117020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiaojuan Yan, Ting Zhao, Ting Lan, Fei Cao, P. Tong, S. Zhao
Surveys has been developed for the quality of the soil environment in the vegetable plot, choosing some vegetable bases in Chengdu¡¯s suburb- Pengzhou as the study area. In order to analyze the changing trend of soil environmental quality in the suburban vegetable base, comparisons from the soil pH, soil nutrient composition, soil heavy metals to pesticide residues have been made with the previous results which were published in the Second National Soil Survey in 1984. The results show that compared with 1984, nowadays (2009) the soil pH is significantly declined and the soil(pH ¡Ü 6.0) accounts is nearly as much as 82.35% of all the soil studied in Pengzhou, as for the nutrient content, total nitrogen, ammonium nitrogen, available phosphorus and potassium in the pick-up soil have been improved respectively, while the organic matter content has been lowered obviously, in the heavy metal content survey, almost all the kinds of metal involved here are increased except Hg. The conclusion can be made: in recent 25years, the soil environmental quality of the vegetable base in Pengzhou is overall becoming worse and worse.
{"title":"Studies on the Tendency of Soil Environmental Quality in Suburban Vegetable Base of Chengdu","authors":"Xiaojuan Yan, Ting Zhao, Ting Lan, Fei Cao, P. Tong, S. Zhao","doi":"10.1109/CDCIEM.2011.346","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.346","url":null,"abstract":"Surveys has been developed for the quality of the soil environment in the vegetable plot, choosing some vegetable bases in Chengdu¡¯s suburb- Pengzhou as the study area. In order to analyze the changing trend of soil environmental quality in the suburban vegetable base, comparisons from the soil pH, soil nutrient composition, soil heavy metals to pesticide residues have been made with the previous results which were published in the Second National Soil Survey in 1984. The results show that compared with 1984, nowadays (2009) the soil pH is significantly declined and the soil(pH ¡Ü 6.0) accounts is nearly as much as 82.35% of all the soil studied in Pengzhou, as for the nutrient content, total nitrogen, ammonium nitrogen, available phosphorus and potassium in the pick-up soil have been improved respectively, while the organic matter content has been lowered obviously, in the heavy metal content survey, almost all the kinds of metal involved here are increased except Hg. The conclusion can be made: in recent 25years, the soil environmental quality of the vegetable base in Pengzhou is overall becoming worse and worse.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":"196 1","pages":"1310-1313"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75894975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present study is the first report of the conversion of two simple polycyclic aromatic hydrocarbons, biphenyl and naphthalene, into the aliphatic polymer poly-¦Â-hydroxybutyrate by a single bacterium. The bacterium we have identified as Sphing obium scionense sp. WP01T (=DSM19371T=ICMP 13533T) was originally isolated from contaminated soil containing oil residues and Pinus radiata sap and sawdust. We have shown that Sphing obium scionense sp.WP01T is able to accumulate poly-¦Â-hydroxybutyrate from naphthalene and biphenyl when these are provided as sole carbon sources under nitrogen limited conditions. The generation of PHA from aromatic hydrocarbons as a feedstock provides a route for converting waste polluting hydrocarbons into useable biological polyesters.
{"title":"Formation of Poly-ß-hydroxybutyrate from Polycyclic Aromatic Hydrocarbons by Sphingobium scionense sp. WP01","authors":"Quanfeng Liang, G. Lloyd-Jones","doi":"10.1109/CDCIEM.2011.120","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.120","url":null,"abstract":"The present study is the first report of the conversion of two simple polycyclic aromatic hydrocarbons, biphenyl and naphthalene, into the aliphatic polymer poly-¦Â-hydroxybutyrate by a single bacterium. The bacterium we have identified as Sphing obium scionense sp. WP01T (=DSM19371T=ICMP 13533T) was originally isolated from contaminated soil containing oil residues and Pinus radiata sap and sawdust. We have shown that Sphing obium scionense sp.WP01T is able to accumulate poly-¦Â-hydroxybutyrate from naphthalene and biphenyl when these are provided as sole carbon sources under nitrogen limited conditions. The generation of PHA from aromatic hydrocarbons as a feedstock provides a route for converting waste polluting hydrocarbons into useable biological polyesters.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":"136 1","pages":"2448-2451"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79639886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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