自疏 meaning in English
self-thinning
Examples
- The results showed the trend of soil ifi changes was partial " u " , namely , during the course of artificial picea succession , soil ifi decreased sharply at the initial stage , after artificial picea reaches mature forest , soil ifi recovered slowly and reached soil ifi of natural coniferous forest finally
在人工云杉林地中，土壤ifi表现出非正“ u ”型的变化，即云杉幼林向成熟林演替时，土壤ifi迅速下降，大约在云杉40龄出现自疏之后，土壤ifi回升，但恢复速度十分缓慢。 - Seed collection should begin when seed on the most top of the spike sloughing , and go on for 3 days . biology population of this plant was research on clone and modular level , mainly discussed how density affect the population size and biomass , as well as the " - 3 / 2 self thinning " and the primary productions under different densities
从无性系构件和个体水平上进行了野大麦种群生物学方面的研究。主要讨论了密度对种群数量和生物量的影响，对“ - 3 2 ”自疏法则进行了讨论，并从草地生产角度比较了不同密度种植区的草地净第一性生产力。 - Soil amounts of microbes of loa artificial picea forest were the most in the topsoil , amount of bacteria and actinomycetes sharply decreased from the early picea forest to the mature forest , and after the mature forest , amount of fungi increased slowly . fungi had greatly effect on decomposition of litter
10a生人工云杉林地细菌、真菌和放线菌数量最多，随着云杉林龄的增加，细菌和放线菌的数量急剧减少，真菌在云杉自疏时，其数量稍有增加，之后又急剧下降，真菌在针叶林凋落物分解中起重要作用。 - Soil saturated capacity , capillary capacity , total porosity and capillary porosity showed the trend of the " u " during the successional course of artificial forest , namely , they reduced on the early successional stages , after picea reached mature forest , soil porosity recovered slowly . the content of natural water was mainly affected by capillary porosity . from soil chemical properties analysis , the content of soil organic , humus , ha , fa and ha / fa of topsoil was more than that of bottom layer
即人工云杉幼林向成熟林演替阶段，土壤饱和持水量、毛管持水量及总孔隙和毛管孔隙则减少，在40年生云杉林达最低值，之后随着云杉自疏，微生态改善，林地凋落物分解加快，土壤饱和持水量、毛管持水量及总孔隙和毛管孔有上升的趋势，毛管持水量是决定林地自然含水量的主要因子。