阴: Ⅰ名词1.(中国古代哲学认为宇宙中通贯物质和人事的两大对立面之一) (in chinese philosophy, medicine, etc.) yin, the feminine or negative principle in nature2.(指太阴, 即月亮) the moon 短语和例子阴历 lunar calendar3.(不见阳光的地方) shady pla
The traits of and diversity of different habitats of alpine grassland plant community in eastern qilian mountains were studied 摘要对东祁连山高寒草地不同生境类型（阴坡、滩地和阳坡）植物群落的和多样性进行了研究。
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Growing in mixed forests and pinus forests , usually in shade ; about 2500 - 3400 m descending to 1800 m in other parts of range of species 一般生长在阴坡的混交林和马尾松林中，海拔约2500 - 3400米，在一些海拔将至米的地方也有分布。
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Acutesrata and other low trees mixed community ; carpinus turczaninowii , tilia dictyoneura and lindera umbelleta have equal contribution to mixed trees community 对锐齿栎群落的阴阳坡进行比较，可以发现阴坡多样性普遍大于阳坡，而优势度则阳坡大于阴坡。
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There is lack of rainfall in experimental region . during its growth period , soil water content among different site types was : semi - shady > sunny > semi - sunny 黄土高原属土壤水分亏缺型，不同立地条件之间，人工刺槐林土壤含水量从大到小为：半阴坡半阳坡阳坡。
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It decreased with the increase of the gradient . the soil moisture in sunlit slope is greater than that in sunless slope , and changes as the following order in the slope : top < middle < lower 在坡面，随着坡度的增加，土壤含水量逐渐降低；阴坡的土壤含水量高于阳坡；而在同一坡度和坡向，土壤含水量从坡底向坡顶递减。
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The results showed that : from north - facing slope to south - facing slope and plain field , the species evenness and diversity index decreased ; from plain field to north - facing slope and south - facing slope , richness index also decreased 结果表明，当生境由阴坡向滩地到向阳坡变化时，各种多样性指数的变化顺序为，物种丰富度：滩地阴坡阳坡；均匀度和多样性指数：阴坡阳坡滩地。
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The over - wintering form population of hawthorn spider mite in free - pollutant culture apple orchard was ground orchard > southern exposure orchard > northern exposure orchard . there had significant level at 0 . 01 among these three orchards . culture condition affected the distribution of tetranychus viennensis zacher also 果园立地类型对越冬态山楂红蜘蛛的分布有着显著的影响，越冬态山楂红蜘蛛种群数量平地园阳坡园阴坡园，三者之间差异达极显著水平。
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Soil water content was measured at 28 points in the catchment . biomass and productivity of the plant communities , transpiration rates of dominant plants , and plant community diversity were also measured at various points along the slope . l . in general , it seemed that soil water content increased from the top to the bottom of the catchment . , 在相似植被及坡面形状条件下，土壤水分沿坡面向上逐渐降低；植被类型及其分布与土壤水分的坡面分布密切相关，对上述趋势有减弱的作用，研究发现在偏旱的2002年生长季末，阴坡灌丛坡面坡下的土壤水分含量明显低于坡上。
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The soil physical properties have obvious vertical distribution characteristic in the slope . the bulk density in sunlit slope is greater than it in sunless slope , and change in the follow order in the slope : top < middle < lower . while saturated soil moisture , field capacity , and wilting moisture are on the contrary 在地形上，土壤物理性质具有明显的垂直分布规律，阴坡除土壤容重外，饱和含水量、田间持水量和萎蔫湿度均大于阳坡；同一坡度和坡向下，容重从坡下向坡上递增，饱和含水量、田间持水量和萎蔫湿度均从坡下向坡上递减。
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On the loess plateau , water is the main limiting factors for vegetation growth . root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments . even - aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation . investigatiing results showed that indicated that on all sites , root biomass decreased with depth , and the distribution depth of fine root was deeper than that of coarser root . the results of variance analysis indicated that there were great differences in root biomass among different diameter classes , and coarser root was the main sources of variance , and the root biomass , especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites . analysis of the vertical root distribution parameters , root extinction coefficient , indicated that the value of on northern exposition was more than 0 . 982 , while the value of on southern exposition was less than 0 . 982 , which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition . and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ) , which was in favor of the uptake of water and nutrients from deeper layers , helped the trees to adapt the arid environment , and promoted the growth of the upper parts of the tree 在中国西北黄土高原地区,水分是树木生长发育的主要限制因子.根系分布特征由于反映了树木对环境条件的利用程度而具有更加特殊的生态意义.本研究选择阳坡和阴坡不同立地上年龄一致的刺槐林调查了根系分布特征.根系垂直分布特征的调查结果表明,在所有立地上,根系生物量随着深度的增加而降低,其中细根的分布深度大于粗根的分布深度.方差分析结果表明:不同立地上不同径级根系的分布特征也有明显的差别,粗根是差异存在的主要原因,阴坡立地上的根系生物量,特别是细根生物量大于阳坡立地上的.对根系消弱系数的分析结果表明,阴坡立地上的根系消弱系数大于0 . 982 ,而阳坡立地上的根系消弱系数小于0 . 982 ,说明阴坡立地上刺槐根系的生物量在深层土壤中的分布相对量更大一些.其中细根的根系消弱系数大于粗根的,这种根系分布特征有利于根系对深层土壤水分养分的吸收利用,进而促进树木地上部分的生长发育.图3表3参15
