The eco-environmental frangibility is studied by choosing the factors of land use class change and vegetation cover rate, and the equation of eco-environmental frangibility and its evaluation system are established ba...The eco-environmental frangibility is studied by choosing the factors of land use class change and vegetation cover rate, and the equation of eco-environmental frangibility and its evaluation system are established based on remote sensing （RS） and geographic information system technology （GIS）. Four different years of TM images are selected to calculate land use change grads and vegetation cover rate, and the relationship between the two factors and eco-environment frangibility index are build, taking Fuzhou as an example. The character of times change and space distribution of eco-environment frangibility are described. The result indicates the area of eco-environment frangibility increased 2.6% in Fuzhou during twelve years, and expands from the region between infield and forest land to forest land in space distribution.展开更多
According to interpreting the LANDSAT TM/ETM images of 1986 and 2002, the spatial-temporal characteristics of land use changes were analyzed during 16 years base on GIS. In addition, the change of ecosystem services d...According to interpreting the LANDSAT TM/ETM images of 1986 and 2002, the spatial-temporal characteristics of land use changes were analyzed during 16 years base on GIS. In addition, the change of ecosystem services due to land use change was estimated by the method of vaulting global ecosystem services. The result shows that there were rapid increases in the area of cropland, saline-alkaline land, and dramatic decreases in grassland, water area and wetland between 1986 and 2002. The annual value of the ecosystem services was declined from 767.1 ×10s Yuan/a in 1986 to 624.1 × 10s Yuan/a in 2002, the estimated annual ecosystem service value declined by 18. 6 % （i. e. 1.6% per year） between 1986 and 2002. It indicates that there had been a sever harm to ecosystem functions and services, which results from the deterioration of ecological environment and the adjustment of land use that aim to currently economic benefit.展开更多
[Objective] The experiment aimed to check the pigs＇ digestive utilization of phosphor and other nutrient components in fermented soy- bean meal. [ Method] 15 8-week old two-way cross growing pigs （average weight was...[Objective] The experiment aimed to check the pigs＇ digestive utilization of phosphor and other nutrient components in fermented soy- bean meal. [ Method] 15 8-week old two-way cross growing pigs （average weight was 23.6 kg） were selected and divided randomly into 3 groups, 5 pigs per group. The method of total feces collection was adopted to compare the digestibility of phosphor and other nutrient components in growing pigs fed respectively by fermented soybean meal by Aspergillus usami and normal soybean meal. The experimental design were normal soybean group （NS group, P： 0.087%）, fermented soybean meal group （FS group, P： 0.089%）, normal soybean ＋ fermented soybean meal mixing group （ MS group, P： 0.089% ）. [ Result] The results indicated that the digestibility of growing pigs in FS group was significantly higher than that of NS group. Meanwhile, the digestibility of crude protein was significantly improved. [ Conclusion] The above results indicated that Feeding with soybean meal fermented by Aspergillus usami not only could increase the digestibility of phosphor and protein, but also decrease the excretion of phosphor and nitrogen.展开更多
基金the Department of Science and Technology of Fujian Province (2003I015)Open Foundation of State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing (WCL (02)0104)
文摘The eco-environmental frangibility is studied by choosing the factors of land use class change and vegetation cover rate, and the equation of eco-environmental frangibility and its evaluation system are established based on remote sensing （RS） and geographic information system technology （GIS）. Four different years of TM images are selected to calculate land use change grads and vegetation cover rate, and the relationship between the two factors and eco-environment frangibility index are build, taking Fuzhou as an example. The character of times change and space distribution of eco-environment frangibility are described. The result indicates the area of eco-environment frangibility increased 2.6% in Fuzhou during twelve years, and expands from the region between infield and forest land to forest land in space distribution.
文摘According to interpreting the LANDSAT TM/ETM images of 1986 and 2002, the spatial-temporal characteristics of land use changes were analyzed during 16 years base on GIS. In addition, the change of ecosystem services due to land use change was estimated by the method of vaulting global ecosystem services. The result shows that there were rapid increases in the area of cropland, saline-alkaline land, and dramatic decreases in grassland, water area and wetland between 1986 and 2002. The annual value of the ecosystem services was declined from 767.1 ×10s Yuan/a in 1986 to 624.1 × 10s Yuan/a in 2002, the estimated annual ecosystem service value declined by 18. 6 % （i. e. 1.6% per year） between 1986 and 2002. It indicates that there had been a sever harm to ecosystem functions and services, which results from the deterioration of ecological environment and the adjustment of land use that aim to currently economic benefit.
基金Public Welfare Industry ( Agriculture) Special Scientific Research (20120304204)
文摘[Objective] The experiment aimed to check the pigs＇ digestive utilization of phosphor and other nutrient components in fermented soy- bean meal. [ Method] 15 8-week old two-way cross growing pigs （average weight was 23.6 kg） were selected and divided randomly into 3 groups, 5 pigs per group. The method of total feces collection was adopted to compare the digestibility of phosphor and other nutrient components in growing pigs fed respectively by fermented soybean meal by Aspergillus usami and normal soybean meal. The experimental design were normal soybean group （NS group, P： 0.087%）, fermented soybean meal group （FS group, P： 0.089%）, normal soybean ＋ fermented soybean meal mixing group （ MS group, P： 0.089% ）. [ Result] The results indicated that the digestibility of growing pigs in FS group was significantly higher than that of NS group. Meanwhile, the digestibility of crude protein was significantly improved. [ Conclusion] The above results indicated that Feeding with soybean meal fermented by Aspergillus usami not only could increase the digestibility of phosphor and protein, but also decrease the excretion of phosphor and nitrogen.
