排序方式： 共有3条查询结果，搜索用时 8 毫秒
1
1.
Complex correlation analysis of remotely sensed multi-spectral images of large scale and series of measurements taken simultaneously on the ground , together with closer attention to the optical characteristics of chlorophyll , yielded quantitative estimates of the chlorophyll distribution , a principal index of nutrient in Yuqiao Reservoir. This is one of the approaches to monitoring nutrients in lakes. 相似文献
2.
3.
Accumulation rules of mercury by blood clam (Arca subcrenata Lishke) from Bohai Gulf have been studied. Mercury concentration in soft parts have been related to those in the environment level on the shore and size of animals have also been considered. Uptake ability of mercury in blood clams is high, with the concentration coefficient 1.8 ×103 Hg contents In its soft part are related to those in seawater and in sediment, the relationship- may be expressed by a dual linear regression equation. The total HE content in blood clam individual is power function of its body weight,Arca subcrenata appears to have potential as an indicator of mercury contamination In BohaiGulf. 相似文献
1