摘要
根据太阳辐射在水体中的有效分布、生长季水温和浮游植物光合生态特性等因子,模拟计算了我国大陆东部淡水水域的光合生产力、气候生产力及其季节变化的地理规律。从中得知,这些水域初级产物的年气候生产力主要呈纬向分布,由南向北递减,各地范围在 1.6—24.4gC/m^2·a之间,长江以南是>15.0gC/m^2·a的高值区,长城以北和四川盆地为<10.0gC/m^2·a的低值区,因此,在气候生产力高值区有可能充分利用气候资源优势,开发低成本的自然淡水水域渔业;而在低生产力区,受自然资源的局限其自然捕鱼量需适量控制,因地制宜。
In this paper, some geographical distribution laws of the photosynthetical productivity and the climatic productivity of phytoplankton in freshwater areas of eastern part of China are calculated theoretically with the climato-ecological method. From these results we can know that the annual climatic productivity of primary products in freshwater areas distributes mainly along the latitude and decreases progressively from south to north. Its range of variation is from 1.6-24.4 gC/m2.a. In view of the climatic resource of the photosynthesis of phytolankton, the net fish production in natural freshwater areas at different latitudes must be made in accordance with the different climatic conditions of photosynthesis.
出处
《自然资源学报》
CSSCI
CSCD
1993年第2期150-157,共8页
Journal of Natural Resources
关键词
淡水水域
浮游植物
气候资源
freshwater area
phytoplankton
climatic resource
photosynthetic productivity
