ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Volume 27,Issue 5,2001 Table of Contents
2001, 27(5):3-7.
DOI: 10.7519/j.issn.1000-0526.2001.5.001
Abstract:
From the view point of sustainable development,the relationship between climate change and sustainable development in northern farming pastoral region is discussed.The emphasis is put on the impact study of climate change on agriculture and animal husbandry in the farming pastoral region.It points out that climate change may cause the farming pastoral area′s transfer to southeast,the certain unfavorable impacts on agriculture and the certain unfavorable and favorable impacts on animal husbandry.
From the view point of sustainable development,the relationship between climate change and sustainable development in northern farming pastoral region is discussed.The emphasis is put on the impact study of climate change on agriculture and animal husbandry in the farming pastoral region.It points out that climate change may cause the farming pastoral area′s transfer to southeast,the certain unfavorable impacts on agriculture and the certain unfavorable and favorable impacts on animal husbandry.
2001, 27(5):8-11.
DOI: 10.7519/j.issn.1000-0526.2001.5.002
Abstract:
For the purpose of better using 9210 DBS and improving its performance, the research on how to speed data retrieval for insert and select operations is made, and accordingly the technical solution is given.
For the purpose of better using 9210 DBS and improving its performance, the research on how to speed data retrieval for insert and select operations is made, and accordingly the technical solution is given.
2001, 27(5):12-15.
DOI: 10.7519/j.issn.1000-0526.2001.5.003
Abstract:
Based on moisture content examination in dry winter wheat cropland,an analysis of moisture content condition of glebe,which is fitted or unfitted to fall seeding is made,at the same time,a set of handy and applied moisture content index about fall seeding is concluded.
Based on moisture content examination in dry winter wheat cropland,an analysis of moisture content condition of glebe,which is fitted or unfitted to fall seeding is made,at the same time,a set of handy and applied moisture content index about fall seeding is concluded.
2001, 27(5):16-18.
DOI: 10.7519/j.issn.1000-0526.2001.5.004
Abstract:
By use of statistic method,the characteristic of climatic change in Pingliang during recent fifty years is researched.The influence of climatic change on agriculture is also analysed.It can provide a basis for reasonable utilization of local climatic resource.
By use of statistic method,the characteristic of climatic change in Pingliang during recent fifty years is researched.The influence of climatic change on agriculture is also analysed.It can provide a basis for reasonable utilization of local climatic resource.
2001, 27(5):19-24.
DOI: 10.7519/j.issn.1000-0526.2001.05.005
Abstract:
Based on the data of monthly mean temperature of Feb. to Apr. from 1951 to 1995 in three provinces of South China, the characteristic of low temperature during spring in South China is studied. Six serious low temperature years include 1957, 1968, 1969, 1984, 1985 and 1988. The low temperature in 1968 is the most serious. Serious low temperature is mainly in March and April. Low temperature is more frequent in Fujian and more serious in Guangxi. There is an obvious phase in interannual change of low temperature. The 80′s low temperature is more frequent, the 90′s is least, and others are normal. In years of serious spring low and high temperature years, there is remarkable difference between the mid high latitudes′ circulation of Asia, the subtropical high of western Pacific, and the SST of tropic Pacific. The close relation is obvious between Spring's low temperature of South China and Asia′s polar vortex, North edge of subtropical high in western Pacific, and the SST of warm pool in the Pacific.
Based on the data of monthly mean temperature of Feb. to Apr. from 1951 to 1995 in three provinces of South China, the characteristic of low temperature during spring in South China is studied. Six serious low temperature years include 1957, 1968, 1969, 1984, 1985 and 1988. The low temperature in 1968 is the most serious. Serious low temperature is mainly in March and April. Low temperature is more frequent in Fujian and more serious in Guangxi. There is an obvious phase in interannual change of low temperature. The 80′s low temperature is more frequent, the 90′s is least, and others are normal. In years of serious spring low and high temperature years, there is remarkable difference between the mid high latitudes′ circulation of Asia, the subtropical high of western Pacific, and the SST of tropic Pacific. The close relation is obvious between Spring's low temperature of South China and Asia′s polar vortex, North edge of subtropical high in western Pacific, and the SST of warm pool in the Pacific.
2001, 27(5):25-29.
DOI: 10.7519/j.issn.1000-0526.2001.5.006
Abstract:
Analyses of some aspects,such as the relation between heavy rain and flood, the atmospheric circulation and the meso-scale system about the typical flood-causing heavy rain process in QingJiang Valley in the first and the second dekad of august in 1998 are made. The results show that, flood peaks in QingJiang Valley are formed straight from flood-causing heavy rain and the total times and frequencies of rain clusters are closely related to the accumulating area averaged rainfall of the heavy rain process. Generation of the flood causing heavy rain is closely related to the situation of the subtropical high over the west Pacific at 500hPa, and the meso scale systems and their dispositions and evolutions in upper, middle, and lower layers.
Analyses of some aspects,such as the relation between heavy rain and flood, the atmospheric circulation and the meso-scale system about the typical flood-causing heavy rain process in QingJiang Valley in the first and the second dekad of august in 1998 are made. The results show that, flood peaks in QingJiang Valley are formed straight from flood-causing heavy rain and the total times and frequencies of rain clusters are closely related to the accumulating area averaged rainfall of the heavy rain process. Generation of the flood causing heavy rain is closely related to the situation of the subtropical high over the west Pacific at 500hPa, and the meso scale systems and their dispositions and evolutions in upper, middle, and lower layers.
2001, 27(5):30-34.
DOI: 10.7519/j.issn.1000-0526.2001.5.007
Abstract:
A comprehensive analysis is made on the regional severe convection which occurred over the warm area in 11 individual events.The thermal and dynamic conditions of the synoptic fields where the warm severe convection occurred in Jiangxi province are derived,and some prediction points of the regional warm area strong convection occurring in Jiangxi province are concluded.
A comprehensive analysis is made on the regional severe convection which occurred over the warm area in 11 individual events.The thermal and dynamic conditions of the synoptic fields where the warm severe convection occurred in Jiangxi province are derived,and some prediction points of the regional warm area strong convection occurring in Jiangxi province are concluded.
2001, 27(5):35-37.
DOI: 10.7519/j.issn.1000-0526.2001.5.008
Abstract:
Using 500hPa grid data over the Northern Hemisphere,the circulation features at the corresponding and earlier stages of the late spring chilling in March over Yunnan are analysed.The results shows that the spring chilling over Yunnan is related with the Ural high pressure ridge and the New Siberian transversal trough changing vertically and at the same time,the southern branch trough over the Bay of Bengal makes Yunnan late spring clilling easily.
Using 500hPa grid data over the Northern Hemisphere,the circulation features at the corresponding and earlier stages of the late spring chilling in March over Yunnan are analysed.The results shows that the spring chilling over Yunnan is related with the Ural high pressure ridge and the New Siberian transversal trough changing vertically and at the same time,the southern branch trough over the Bay of Bengal makes Yunnan late spring clilling easily.
2001, 27(5):38-42.
DOI: 10.7519/j.issn.1000-0526.2001.05.009
Abstract:
By the analysis of the characteristics of ice run and causes of ice run disaster in the Inner Mongolia section of the Yellow River, it points out that the precipitation status of the upper and middle reaches of the Yellow River, the freezing status in winter and the melting speed in spring have a close relation with the ice run disaster.Based on the innate laws of ice run disaster,the ice run disaster index is obtained.Meanwhile,it points out the critical temperature index of freezing of the Yellow River and the way of forcasting the date of breakup of the ice in the Yellow River.
By the analysis of the characteristics of ice run and causes of ice run disaster in the Inner Mongolia section of the Yellow River, it points out that the precipitation status of the upper and middle reaches of the Yellow River, the freezing status in winter and the melting speed in spring have a close relation with the ice run disaster.Based on the innate laws of ice run disaster,the ice run disaster index is obtained.Meanwhile,it points out the critical temperature index of freezing of the Yellow River and the way of forcasting the date of breakup of the ice in the Yellow River.
2001, 27(5):43-46.
DOI: 10.7519/j.issn.1000-0526.2001.5.010
Abstract:
Based on the data observed at meteorological station on the coastland of Guangdong the law of wind varying with height,and the law of wind weaken with distance from coastline are studied,and wind energy storage and its exploitables amount on the coastland of Guangdong is calculated.
Based on the data observed at meteorological station on the coastland of Guangdong the law of wind varying with height,and the law of wind weaken with distance from coastline are studied,and wind energy storage and its exploitables amount on the coastland of Guangdong is calculated.
2001, 27(5):47-49.
DOI: 10.7519/j.issn.1000-0526.2001.5.011
Abstract:
Based on establishment of 《The Atlas of Climate Resource and Expert Division of Shaanxi》,and aimed at the questions of the calculation of fine grid data and the analysis of space overlay in the expert climate division,the technological ways of the calculation of subgrid and the overlay analysis scored by division model are proposed.The ways established the basis for the digital image of Shaanxi climate resource and climate division made by GIS.
Based on establishment of 《The Atlas of Climate Resource and Expert Division of Shaanxi》,and aimed at the questions of the calculation of fine grid data and the analysis of space overlay in the expert climate division,the technological ways of the calculation of subgrid and the overlay analysis scored by division model are proposed.The ways established the basis for the digital image of Shaanxi climate resource and climate division made by GIS.
2001, 27(5):50-52.
DOI: 10.7519/j.issn.1000-0526.2001.5.012
Abstract:
A study of meteorological impact on highway construction is carried out.The result shows that highway construction with different materials and different construction stages are sensitive to weather and climate changes.Base on the changes of temperature as well as other meteorlogical factors,a series of meteorological index of highway construction are developed.
A study of meteorological impact on highway construction is carried out.The result shows that highway construction with different materials and different construction stages are sensitive to weather and climate changes.Base on the changes of temperature as well as other meteorlogical factors,a series of meteorological index of highway construction are developed.
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ISSN:1000-0526 CN:11-2282/P