This study proposes a teaching system environment for the training of English guides of stone inscription relics based on analysis and describes the roles played by each element in this system environment. The element...This study proposes a teaching system environment for the training of English guides of stone inscription relics based on analysis and describes the roles played by each element in this system environment. The elements listed in the system environment can contribute themselves only under the support of the whole system environment. Therefore, the effect of the meaning construction is really the coordination result between the elements of the system environment. It can effectively improve the training efficiency of the training of English guides of stone inscription relics.展开更多
This paper puts forwards a practical way aimed at environmental impact assessment of construction items on basis of systematically classifivcation to deal with environmental favtors through identifying and bolting to ...This paper puts forwards a practical way aimed at environmental impact assessment of construction items on basis of systematically classifivcation to deal with environmental favtors through identifying and bolting to all kinds of environmental factors of construction items展开更多
Environmental element has become an important element which restricts the development of economy. The elements in different regions under different environmental conditions restrict the development of economy. In this...Environmental element has become an important element which restricts the development of economy. The elements in different regions under different environmental conditions restrict the development of economy. In this essay, a method, which can quantitatively access the restricting extent of the environmental elements on construction items, is proposed. Since it can systematically analyze and assess the restrictive elements of environmental condition on construction projects, this method can be regarded as a content of the environment.展开更多
Rock fragments are an important component of soil,and their presence has a significant impact on soil erosion and sediment yield.In this paper,the effects of rock fragments in the topsoil profile(RFP)and rock fragment...Rock fragments are an important component of soil,and their presence has a significant impact on soil erosion and sediment yield.In this paper,the effects of rock fragments in the topsoil profile(RFP)and rock fragments on the soil surface(RFS)on the soil erodibility factor(K)were assessed at a global scale.The spatial pattern of the relationship between stoniness and erodibility(RS-K)and its predominant factors were explored through correlation analysis,pattern analysis,and random forest model analysis.The results were as followings:(1)The existence of RFP increased K by 2.84%.The RFS of the mountain land and desert/Gobi reduced K by 18.7%;therefore,once the RFP and RFS were taken into account in the calculation,K was 6.98%lower.(2)The predominant factors of the effect of RFS and the joint effect of RFP and RFS were elevation and slope gradient.The predominant factors of the effect of RFP were annual average precipitation and annual average temperature.(3)In assessing and mapping soil erosion in large regions,special attention should be given to areas with large rock fragment contents,a relatively high altitude,and the presence of steep slope.If rock fragments were not taken into consideration,the mapping results of soil erosion may be biased.This article made the calculation of K more complete and accurate,thereby improving the accuracy of regional soil erosion estimation.This research was of sig-nificance for the investigation of global hydrological effects and simulation of the global soil carbon budget.展开更多
文摘This study proposes a teaching system environment for the training of English guides of stone inscription relics based on analysis and describes the roles played by each element in this system environment. The elements listed in the system environment can contribute themselves only under the support of the whole system environment. Therefore, the effect of the meaning construction is really the coordination result between the elements of the system environment. It can effectively improve the training efficiency of the training of English guides of stone inscription relics.
文摘This paper puts forwards a practical way aimed at environmental impact assessment of construction items on basis of systematically classifivcation to deal with environmental favtors through identifying and bolting to all kinds of environmental factors of construction items
文摘Environmental element has become an important element which restricts the development of economy. The elements in different regions under different environmental conditions restrict the development of economy. In this essay, a method, which can quantitatively access the restricting extent of the environmental elements on construction items, is proposed. Since it can systematically analyze and assess the restrictive elements of environmental condition on construction projects, this method can be regarded as a content of the environment.
基金supported by the Strategic Priority Research Program of Chinese Academy of 463 Sciences,Grant No.XDA20040202.
文摘Rock fragments are an important component of soil,and their presence has a significant impact on soil erosion and sediment yield.In this paper,the effects of rock fragments in the topsoil profile(RFP)and rock fragments on the soil surface(RFS)on the soil erodibility factor(K)were assessed at a global scale.The spatial pattern of the relationship between stoniness and erodibility(RS-K)and its predominant factors were explored through correlation analysis,pattern analysis,and random forest model analysis.The results were as followings:(1)The existence of RFP increased K by 2.84%.The RFS of the mountain land and desert/Gobi reduced K by 18.7%;therefore,once the RFP and RFS were taken into account in the calculation,K was 6.98%lower.(2)The predominant factors of the effect of RFS and the joint effect of RFP and RFS were elevation and slope gradient.The predominant factors of the effect of RFP were annual average precipitation and annual average temperature.(3)In assessing and mapping soil erosion in large regions,special attention should be given to areas with large rock fragment contents,a relatively high altitude,and the presence of steep slope.If rock fragments were not taken into consideration,the mapping results of soil erosion may be biased.This article made the calculation of K more complete and accurate,thereby improving the accuracy of regional soil erosion estimation.This research was of sig-nificance for the investigation of global hydrological effects and simulation of the global soil carbon budget.
