Study Of Environment Changes And Disasters's Impacts On Fruit Development In Shaanxi Province And Countermeasure

Shaanxi, as economic, cultural, political center of west, is the leading province of development of western regions. For fruit industry is one of the three economic pillar in Shaanxi ,it has a strong impact on national income and the process of the development of western regions .at the same time, fruit industry is affected greatly by environment. So, Studying environment changes of this area and its response to the global climate change, and studying what influence has produced or will produce on the development of the fruit industry of Shaanxi, have far-reaching meanings.On the guidance and support of Professor Huang, I investigated many regions on the spot such as Yanan, Luochuan, Weinan, Baoji, Xianyang, Xi'an, to gather climate materials and fruit data of 39 counties from the foundation of corresponding weather station to 2000. The above-mentioned materials and data is dealt with by the computer, using Mapinfo6.0 to make the thematic map and analyze space data, use the computer software to of fruit for, using SPSS 10.0 and Excel to make the database and count.The full text is divided into seven major parts, and we can draw the following conclusion:The first part expounds the meaning, purpose of this research.Second, Climate change in fruit areas has more obvious response to the global change except for northern terrace and plain of Weihe River. Mean annul temperature at every fruit district obviously becomes warm the same as China high latitude district, caused by temperature rising fast in winter mainly too. Similar to china variation tendency of precipitation, but reduce faster than the national average. Annual sunshine time is dropped, but went up to some extent in the 1990s compared with in 80.The third one mainly discusses climate evaluation for apple plantation. It firmed that northern loess plateau of north of Shaan'xi and western loess plateau of Shaan'xi are the most suitable areas for apple plantation.Fourth indicate that drought and waterlogging, low-temperature freezing and sandstorm are the main three disasters which have great influence on fruit industry of Shaanxi, so space-time law and their influence are researched. Furthermore, accordingto standard deviation, the array drought of the past 40 years is set up.The fifth, applying Mapinfo6.0 of GIS to set up database including magnanimity fruit data for 1985a,1990a,1995a and 20003t to make the thematic map and analyze space data, I summarize the law of regional fruit distribution and fruit structure. It showed that the whole province have 35%( about 45,000 ha.) apple area, 50% pear area distributed in the unsuitable area.The sixth has put forward the countermeasure of the fruit structure adjustment and optimizing the overall arrangement. At northern loess plateau of north of Shaarfxi and western loess plateau of Shaan'xi, we can expand apple planting. But, apple planting should be reduced as soon as possible at northern terrace and plain of Weihe River and northern pediment plain of Qinling Mountains and change to culture grapes, peaches and persimmons, etc.The seventh summarizes the important content of the full text.