the surface of soil土壤表面
basal surface chalk soil风化面白垩土
ecific surface of soil土壤比表面
surface of soil road土质路面
surface e soil表面土壤
surface clayey soil liner表层粘性土
surface of soil土壤表面
specific surface of soil土壤比表面;土壤表面比
surface soil stabilization浅层土加固
In this paper, the surface soil (0-20cm) in the Xi’an 14 main parks has been carried on the synchronized open country investigation, sample gathering and the analysis test.
本文对西安市14个主要公园表层土壤(0-20cm)进行了同步的野外调查、样品采集和分析测试。
Farmland surface soil (0-30cm) nitrogen concentration directly affects the intensity and frequency of nitrogen loss. At the same time, it affects surface mud (0-5cm) nitrogen concentration of adjacent ditches of farmlands.
农田耕层土壤(0-30cm)氮素含量直接影响农田氮素流失的强度,也直接影响着农田旁沟渠表层底泥(0-5cm)的氮素含量,在其它影响因素相同的前提下,农田耕层土壤(0-30cm)全氮含量越高,农田氮素流失的强度就越高,产生高水溶性总氮浓度的次数就越多,农田耕层土壤(0-30cm)速效氮含量越高,农田旁沟渠表层底泥(0-5cm)速效氮含量就越高。
参考来源 - 太湖水网地区不同类型农田氮磷流失特征The CO2 emitted from the surface soil comprises an important part for the soil CO2 flux of the alpine meadow soil profiles.
高寒草甸表层土壤产生的CO2是土壤剖面CO2通量的主要贡献者。
参考来源 - 草原土壤有机碳动力学同位素示踪研究The representation of pollen in surface soil is different from families and genera.
表土花粉的代表性因种属的不同而各有差异。
参考来源 - 若尔盖地区24000年以来植被记录的环境变化研究