“GN”是“Gradient of Nutrients”的縮寫，意思是“營養成分梯度”。
重要詞彙
gradient n. 梯度，梯度率
雙語例句
1、The results in this study recommed that the length and gradient of the slope should be considered in the soil nutrients management on sloping land.
因此，在坡地土壤養分調控中必須綜合考慮坡度和坡長因素。
2、The analysis of the gradient characters of chemical properties of profile soil shows that， most of the content of nutrients represents characteristics of regular distribution， declining as the profile depth increases.
土壤剖面（A層、B1層和B2層）養分性質統計分析表明：坡面土壤剖面上的大部分養分指標含量表現出梯度規律性分佈特徵，即隨土壤剖面深度的增加而降低。
