The Shaowu-Nanping-Pingtan deep seismic sounding profile is located in northern Fujian Province. High-quality seismic sounding data were acquired by five large explosive blasts received by 133 digital seismic instrume...The Shaowu-Nanping-Pingtan deep seismic sounding profile is located in northern Fujian Province. High-quality seismic sounding data were acquired by five large explosive blasts received by 133 digital seismic instruments along the profile. Based on seismic facies analysis and travel-time picking on shot record sections, a model of the velocity structure of upper crust was developed by finite-difference tomography of the first breaks; the 2-D P-wave velocity structure and tectonic characteristics of the crust were interpreted further by fitting of waveforms and seismic travel times. The results show that the top of the crystal- line basement is buried at depths of 2.0-4.0 kin, with the deepest buried up to 4.0 km within the Fuzhou Basin. The Moho in- terface was found to be deeper in the west and shallower in the east （i.e., 30.0 km near the coast, increasing to 33.0 km north- westward）. The lower crust on the east side of the Zhenghe-Haifeng Fault Zone has a smoothly varying gradient structure, whereas on the west side it has two distinct layers with a boundary between those layers at a depth of 23 km. Seismic velocities on the west side are generally lower than on the east side; a low velocity layer is observed with a lowest speed of 6.25 km/s at a depth of 22 km on the west side, which may consist of partially molten material. The Zhenghe-Haifeng Fault is a deep crustal fault, and should be a channel for deep material upwelling; it has a direct relationship with multiple stages of continental tectonic movements in Southern China and with multiple magmatic events that started in the Proterozoic and ended in the of late Tertiary in Fujian.展开更多
Since 2003, China has carried out the pilot of collective forest tenure reform (CFTR). Inrecent years, there have been lots of researches about evaluation of the CFTR, which are, however,mostly qualitative research wi...Since 2003, China has carried out the pilot of collective forest tenure reform (CFTR). Inrecent years, there have been lots of researches about evaluation of the CFTR, which are, however,mostly qualitative research with little focus on the quantitative research. This paper used the AnalyticHierarchy Process (AHP) and expert assignment method to define the comprehensive evaluation indexes and monitoring indexes of the CFTR. In this study, the authors did a quantitative evaluation of the CFTR in Shaowu, Fujian Province, which was scored as 0.844, indicating more significant effect. The authors investigated 100 farmer households there, and the data showed that the average household income has grown by 49.2% in the 6 years after the CFTR implementation, while the forestry incomehas grown by 108.3%, indicating that farmers’ income increased significantly after the CFTR. Factor analysis shows that CFTR has been the key factor to increase farmers’ income.展开更多
This issue of Journal of Meteorological Research is dedicated to commemorating Shaowu Wang, a former professor of the Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University.
基金supported by the National Natural Science Foundation of China(Grant No.41474071)the Special Research of Earthquake Industry(Grant No.2015419015)the Earthquake Technology Project of Spark Plan(Grant No.XH1015)
文摘The Shaowu-Nanping-Pingtan deep seismic sounding profile is located in northern Fujian Province. High-quality seismic sounding data were acquired by five large explosive blasts received by 133 digital seismic instruments along the profile. Based on seismic facies analysis and travel-time picking on shot record sections, a model of the velocity structure of upper crust was developed by finite-difference tomography of the first breaks; the 2-D P-wave velocity structure and tectonic characteristics of the crust were interpreted further by fitting of waveforms and seismic travel times. The results show that the top of the crystal- line basement is buried at depths of 2.0-4.0 kin, with the deepest buried up to 4.0 km within the Fuzhou Basin. The Moho in- terface was found to be deeper in the west and shallower in the east （i.e., 30.0 km near the coast, increasing to 33.0 km north- westward）. The lower crust on the east side of the Zhenghe-Haifeng Fault Zone has a smoothly varying gradient structure, whereas on the west side it has two distinct layers with a boundary between those layers at a depth of 23 km. Seismic velocities on the west side are generally lower than on the east side; a low velocity layer is observed with a lowest speed of 6.25 km/s at a depth of 22 km on the west side, which may consist of partially molten material. The Zhenghe-Haifeng Fault is a deep crustal fault, and should be a channel for deep material upwelling; it has a direct relationship with multiple stages of continental tectonic movements in Southern China and with multiple magmatic events that started in the Proterozoic and ended in the of late Tertiary in Fujian.
基金funded by the Special Research Program for Public-welfare Forestry "Dynamic Monitoring and Evaluation System Research on Typical Area of CFTR (200804026)"
文摘Since 2003, China has carried out the pilot of collective forest tenure reform (CFTR). Inrecent years, there have been lots of researches about evaluation of the CFTR, which are, however,mostly qualitative research with little focus on the quantitative research. This paper used the AnalyticHierarchy Process (AHP) and expert assignment method to define the comprehensive evaluation indexes and monitoring indexes of the CFTR. In this study, the authors did a quantitative evaluation of the CFTR in Shaowu, Fujian Province, which was scored as 0.844, indicating more significant effect. The authors investigated 100 farmer households there, and the data showed that the average household income has grown by 49.2% in the 6 years after the CFTR implementation, while the forestry incomehas grown by 108.3%, indicating that farmers’ income increased significantly after the CFTR. Factor analysis shows that CFTR has been the key factor to increase farmers’ income.
文摘This issue of Journal of Meteorological Research is dedicated to commemorating Shaowu Wang, a former professor of the Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University.
