Ecological progress is a new stage in the development of human civilization and ecological city is a new city development model under the concept of ecological progress. In this paper, favorable conditions and constra...Ecological progress is a new stage in the development of human civilization and ecological city is a new city development model under the concept of ecological progress. In this paper, favorable conditions and constraints for constructing an ecological city are analyzed and construction concepts are put forward. It contributes to the construction of Liaocheng into an ecological city and has a referential value for other cities.展开更多
The 1:200,000 middle-large scale Bouguer gravity anomaly data covering the southern segment of the Liaocheng-Lankao fault(SLLF)and its vicinity are analyzed with two methods.First,the Bouguer gravity anomaly data are ...The 1:200,000 middle-large scale Bouguer gravity anomaly data covering the southern segment of the Liaocheng-Lankao fault(SLLF)and its vicinity are analyzed with two methods.First,the Bouguer gravity anomaly data are decomposed by two-dimensional(2 D)wavelet to make the family of multi-scale modes correspond with density structure at different depths.Second,a two and half dimension(2.5 D)human-computer interaction inversion of the Bouguer gravity anomaly data are conducted with the constraints provided by two deep seismic sounding profiles(DSS1 and DSS2)crossing the study area to get the crustal density profiles.Based on the integrated study,we can draw the following conclusions:1)SLLF appears to be a deep fault with almost vertical dipping and rooted into the uppermost mantle;2)In the middle to upper crust SLLF shows an clear turning patterns and segmentation features;3)In the study area the epicentral distributions of the precisely re-located small earthquakes and the historical large earthquakes have a good correspondence with the turning patterns and segmentation features of SLLF;and 4)The results of the horizontal slices from 2 D wavelet decomposition show that there are significant differences in the density structure on the two sides of the fault.A well-defined concave structure with low density exists in the upper crust of the Dongming Depression on the west side of the fault,with the concave center being estimated at a depth of about 8 km.In contrast,the upper crust on the east side presents a relative thinner pattern in depth with a bit higher density.Meanwhile,the low-density structure in the middle crust underneath the fault is presumably caused by the uplift of the upper mantle materials and their intrusion along the deep rupture system.This paper clarified the inconsistency of fault system and epicenters of small earthquakes from upper to lower crust.The results indicated that the fault system plays an important governing role to the seismicity in this area.展开更多
[ Objective] The research aimed to study occurrence rule, reason and defense measures of the thunderstorm in Liaocheng in the past 50 years. [Method] By using meteorological observation records at 8 observatories of U...[ Objective] The research aimed to study occurrence rule, reason and defense measures of the thunderstorm in Liaocheng in the past 50 years. [Method] By using meteorological observation records at 8 observatories of Uaocheng during 1963 -2012, occurrence rule of the thunderstorm was studied. Occurrence reason and defense measures were also analyzed. [ Result] Annual thunderstorm days presented decreasing trend in Liaocheng. The earliest thunderstorm occurred in February, while the latest thunderstorm occurred in November. Thunderstorm mainly appeared in June, July and August, which occupied 77.6% of that in whole year. Thunderstorm days among each county had small difference. Thunderstorm days in Dong＇e County reached the minimum, which was related to local underlying surface. Occurrence reason of the thunderstorm was analyzed from objective and subjective aspects. By combining the actual situation of Liaocheng, corresponding prevention countermeasures were put forward. [Conclusion] The research could provide reference basis for thunderstorm disaster prevention and reduction in Liaocheng.展开更多
s—This paper generalizes land use development in Liaocheng Prefecture, Shandong Province, China; describes land use changes during different period of time; and analyzes the driving forces of land use change.
According to the relevant data about the land resources and population in Liaocheng City from 1999 to 2008, by using the research method of bearing capacity of natural resources, the thesis analyzes the relationship b...According to the relevant data about the land resources and population in Liaocheng City from 1999 to 2008, by using the research method of bearing capacity of natural resources, the thesis analyzes the relationship between natural resources and dynamic change of population in Liaocheng City. The results show that the farmland tends to diminish on the whole, and forests, garden land, urban-rural settlements and land for enterprises and mining increase slowly. Based on the analysis of the dynamic relationship between land resources and population, we conclude that the land resources still can bear the current population in Liaocheng City, but the population development inflict critical pressure on the forest resources and water resources.展开更多
Detailed statistics of characteristics of climatic factors in Liaocheng in 2015 were carried out. The main points of meteorological service＇ were summed up to im- prove the ability of meteorological forecast, thereby...Detailed statistics of characteristics of climatic factors in Liaocheng in 2015 were carried out. The main points of meteorological service＇ were summed up to im- prove the ability of meteorological forecast, thereby meeting the new requirements of the public for meteorological cause. The results showed that the annual average temperature in various Counties was in the range of 13.6-14.5 ℃, which was slight- ly higher than that in an average year and lower than that in the past year; the average annual precipitation of various counties ranged from 376.9 to 592.1 mm, which was slightly less than those in an average year and the past year; the aver- age sunshine duration across the city was 2 026 h, which was less than that in an average year and slightly more than that in the past year. The main climatic events included fog and haze, heavy snowfall, thunderstorm, gale, hail, high temperature, heavy rain and rainy sparse sunlight, which produced a negative impact on the agri- culture, tourism, transportation and people＇s daily life. This is the focus of future services.展开更多
The Lankao-Liaocheng Fractural Zone is a large-seade NNE-trending struetural zone in the North China Crustoblock. Dated from the Late Arehean-Early Proterozoie, it is stil1 active now. Its nature varied with time in i...The Lankao-Liaocheng Fractural Zone is a large-seade NNE-trending struetural zone in the North China Crustoblock. Dated from the Late Arehean-Early Proterozoie, it is stil1 active now. Its nature varied with time in its developing process. It has became a tensile ultralithospherie fraetural zone at present or in diwa residual-mobility period. Some cenozoic oil-gas-bearing basins are distributed along the fraetural zone which fomed an important oil-gas accumulating belt in the North China Ctustoblock.展开更多
基金Supported by Science and Technology Project of Shandong Province(2012GSF12204)Soft Science Project of Shandong Province(2012RKB01054)
文摘Ecological progress is a new stage in the development of human civilization and ecological city is a new city development model under the concept of ecological progress. In this paper, favorable conditions and constraints for constructing an ecological city are analyzed and construction concepts are put forward. It contributes to the construction of Liaocheng into an ecological city and has a referential value for other cities.
基金financial support from China Scholarship Councilthe support from the Seismic Youth Founding of GEC (Grant No. YFGEC2016008)the National Natural Science Foundation of China(Grant No. 41474077)
文摘The 1:200,000 middle-large scale Bouguer gravity anomaly data covering the southern segment of the Liaocheng-Lankao fault(SLLF)and its vicinity are analyzed with two methods.First,the Bouguer gravity anomaly data are decomposed by two-dimensional(2 D)wavelet to make the family of multi-scale modes correspond with density structure at different depths.Second,a two and half dimension(2.5 D)human-computer interaction inversion of the Bouguer gravity anomaly data are conducted with the constraints provided by two deep seismic sounding profiles(DSS1 and DSS2)crossing the study area to get the crustal density profiles.Based on the integrated study,we can draw the following conclusions:1)SLLF appears to be a deep fault with almost vertical dipping and rooted into the uppermost mantle;2)In the middle to upper crust SLLF shows an clear turning patterns and segmentation features;3)In the study area the epicentral distributions of the precisely re-located small earthquakes and the historical large earthquakes have a good correspondence with the turning patterns and segmentation features of SLLF;and 4)The results of the horizontal slices from 2 D wavelet decomposition show that there are significant differences in the density structure on the two sides of the fault.A well-defined concave structure with low density exists in the upper crust of the Dongming Depression on the west side of the fault,with the concave center being estimated at a depth of about 8 km.In contrast,the upper crust on the east side presents a relative thinner pattern in depth with a bit higher density.Meanwhile,the low-density structure in the middle crust underneath the fault is presumably caused by the uplift of the upper mantle materials and their intrusion along the deep rupture system.This paper clarified the inconsistency of fault system and epicenters of small earthquakes from upper to lower crust.The results indicated that the fault system plays an important governing role to the seismicity in this area.
文摘[ Objective] The research aimed to study occurrence rule, reason and defense measures of the thunderstorm in Liaocheng in the past 50 years. [Method] By using meteorological observation records at 8 observatories of Uaocheng during 1963 -2012, occurrence rule of the thunderstorm was studied. Occurrence reason and defense measures were also analyzed. [ Result] Annual thunderstorm days presented decreasing trend in Liaocheng. The earliest thunderstorm occurred in February, while the latest thunderstorm occurred in November. Thunderstorm mainly appeared in June, July and August, which occupied 77.6% of that in whole year. Thunderstorm days among each county had small difference. Thunderstorm days in Dong＇e County reached the minimum, which was related to local underlying surface. Occurrence reason of the thunderstorm was analyzed from objective and subjective aspects. By combining the actual situation of Liaocheng, corresponding prevention countermeasures were put forward. [Conclusion] The research could provide reference basis for thunderstorm disaster prevention and reduction in Liaocheng.
文摘s—This paper generalizes land use development in Liaocheng Prefecture, Shandong Province, China; describes land use changes during different period of time; and analyzes the driving forces of land use change.
基金Supported by National Natural Resources Foundation (40901276,41072258,40772209)
文摘According to the relevant data about the land resources and population in Liaocheng City from 1999 to 2008, by using the research method of bearing capacity of natural resources, the thesis analyzes the relationship between natural resources and dynamic change of population in Liaocheng City. The results show that the farmland tends to diminish on the whole, and forests, garden land, urban-rural settlements and land for enterprises and mining increase slowly. Based on the analysis of the dynamic relationship between land resources and population, we conclude that the land resources still can bear the current population in Liaocheng City, but the population development inflict critical pressure on the forest resources and water resources.
基金Supported by Trial on Change Rules of CO_2 in Solar Greenhouse and Its Effect on Tomato(2015sdqxm10)~~
文摘Detailed statistics of characteristics of climatic factors in Liaocheng in 2015 were carried out. The main points of meteorological service＇ were summed up to im- prove the ability of meteorological forecast, thereby meeting the new requirements of the public for meteorological cause. The results showed that the annual average temperature in various Counties was in the range of 13.6-14.5 ℃, which was slight- ly higher than that in an average year and lower than that in the past year; the average annual precipitation of various counties ranged from 376.9 to 592.1 mm, which was slightly less than those in an average year and the past year; the aver- age sunshine duration across the city was 2 026 h, which was less than that in an average year and slightly more than that in the past year. The main climatic events included fog and haze, heavy snowfall, thunderstorm, gale, hail, high temperature, heavy rain and rainy sparse sunlight, which produced a negative impact on the agri- culture, tourism, transportation and people＇s daily life. This is the focus of future services.
文摘The Lankao-Liaocheng Fractural Zone is a large-seade NNE-trending struetural zone in the North China Crustoblock. Dated from the Late Arehean-Early Proterozoie, it is stil1 active now. Its nature varied with time in its developing process. It has became a tensile ultralithospherie fraetural zone at present or in diwa residual-mobility period. Some cenozoic oil-gas-bearing basins are distributed along the fraetural zone which fomed an important oil-gas accumulating belt in the North China Ctustoblock.
