摘要
分析了现实状况下不同地区农牧业生产格局，并建立各界限温度及持续天数与现实条件的关系方程。在设定未来气候变暖一定幅度的情况下，利用该方程组对青海各地未来热量资源予以分析，探讨未来气候变暖后青海各地农、林、牧生产方式所改变的可能性。结果表明：青海各地在气温升高２℃，降水增加１０％后，日平均气温稳定通过各界限温度期间的积温将增加３８０℃左右，所对应的持续天数约增加２０ｄ。其结果会导致青海种植业（特别是经济作物）面积扩大，并向高海拔地带延伸，林线上升。但气候变暖的同时，地表蒸发的加大远比降水的增加来得快，导致青海各地干旱加剧。
The distribution of productive pattern
of agricultural and animal husbandry in different area in the present condition is analysed in
this paper, and the relation equation between demarcation temperature in every area,
continuous time (day) and the present environmental condition is also developed. There is a
relationship between distribution of productive pattern of agricultural and animal husbandry in
different area, local quantity of heat and continuous time (day) of different demarcation
temperature. By using the equation, the change possibility of the productive pattern of
agricultural and animal husbandry and forestry in Qinghai is analysed with the future climate
changes, Meanwhile resources for quantity of beat in the future in Qinghai are also analyzed.
The results show: Cumulative temperature of demarcation temperature of the day mean air
temperature stable passingthrough will increase about 380, and the continuous day will
increase in 20 days on the condition of air temperature raising 2 and precipitation increase by
10% in different condition. It will lead to increasing the area of planting especially economic
crops in forestline, and in higher level of latituderegion. On the other hand, the drought in
different area will become denser because of the increasing in the evaporation of soil surface.
出处
《西北农业学报》
CAS
CSCD
1999年第2期102-107,共6页
Acta Agriculturae Boreali-occidentalis Sinica
基金
中国科学院"九.五"特别支持项目
关键词
气候变暖
生产格局
影响
界限温度
积温
Climate warming
Productive pattern
Effect
Demarcation temperature
Cumulative
temperature
