grazing period 中文意思是什麼
grazing period
解釋
放牧期-
The effects of food concentration and diurnal photo period on the filtering and grazing rates a. pacific were discussed. the main results are showed as follows : 1. in the prawn cultivated pond, the year - round phytoplankton apparent growth rate ranged between 0. 181 ~ 1. 2888 d - 1
主要分析了微型浮遊動物對浮游植物現存量和初級生產力的攝食壓力，微型浮遊動物的氨氮排泄率及其對初級生產力的貢獻，探討了實驗室條件下食物濃度和光周期對太平洋紡錘水蚤（ acartiapacifica ）濾食率和清濾率的影響。 -
The author studied the influences on grassland bird communities caused by disturbance in the dagang forestry center in jilin province during the period from april to july in 2001 and 2002. the contents include : the influences on grassland bird communities structure caused by human activity in big scale ; the influences on grassland bird communities structure caused by grazing disturbance ; the influences for grassland bird communities structure caused by grazing disturbance ; the influences on grassland bird communities structure caused by habitat fragmentation. the main results are as follows : 1
作者於2001年和2002年4 7月，在吉林省鎮賚縣大崗林場進行了干擾對草原鳥類群落結構形成的影響研究，研究內容包括：大尺度范圍人類活動對鳥類群落組成的影響；放牧干擾對草原鳥類群落結構形成的影響；火燒對草原鳥類群落結構形成的影響；棲息地破碎化對草原鳥類群落結構形成的影響，主要結果如下： 1
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