摘要
运用环境因子逐步订正法对河北省康保县在1985~2007年CO2浓度增加和气候变化情况下的土地生产潜力进行了估算。借鉴陆地生态系统模型4.0版本（TEM 4.0）,首次对CO2浓度增加对区域光合生产潜力影响进行定量化研究。1985~2007年,CO2浓度的增加,使光合生产潜力增加了5%（6745.0 kg/hm2）,达到141645.0 kg/hm2 温度升高使光温生产潜力增加16%（5595.0 kg/hm2） 气候变化使降雨量减少,而温度升高使潜在蒸散量增加,导致光温水生产潜力下降了6%（478.8 kg/hm2）,最终导致土地生产潜力下降了6%（360.5 kg/hm2）。
The environmental element step-up method was used to estimate land potential productivity and its response to changes in climate and atmospheric CO2 concentration of Kangbao in resent 30 years.Using the reference of Terrestrial Ecosystem Model（TEM 4.0）,we calculated the increase of land photosynthesis potential productivity in the influence of CO2 concentration,for the first time in China.In the resent 30 years,photosynthesis potential productivity increase by 5%（6 745.0 kg/hm2） for elevated CO2. Photoeynthesis-tempemture potential productivity increased substantially by 16 %（5 595.0 kg/hm2） for temperature raise. Precipitation decreased, potential evapotranspiration in the result of temerature raise photosynthesis-temperature-water po- tential productivity reduce by 6%（478.8 kg/hm2）. In the resent 30 years, land potential productivity of Kanghao has reduced from 6 069.3 kg/hm2 to 5 708.8 kg/hm2.
出处
《安徽农业科学》
CAS
北大核心
2009年第9期4198-4200,4203,共4页
Journal of Anhui Agricultural Sciences
基金
国家自然科学基金(40671006)
关键词
土地生产潜力
气候变化
CO2浓度
响应
康保
Land potential productivity
Climate change
CO2 concentration
Response
Kangbao
【英文摘要】 The environmental element step-up method was used to estimate land potential productivity and its response to changes in climate and atmospheric CO2 concentration of Kangbao in resent 30 years.Using the reference of Terrestrial Ecosystem Model（TEM 4.0）,we calculated the increase of land photosynthesis potential productivity in the influence of CO2 concentration,for the first time in China.In the resent 30 years,photosynthesis potential productivity increase by 5%（6 745.0 kg/hm2） for elevated CO2.Photosynthe...
