阴坡

通过DEM数字高程分析，1997年阳坡面积比1982年增加7500m~2，而阴坡面积则减少4900m~2。

By using DEM Digital Elevation through analysis , sunny area in 1997 increased 7500 m ~ 2 more than in 1982 , while the area of shady slope decreased 4900 m ~ 2 .

而阳坡立地上刺槐细根在距树干0.5m处的垂直分布深度可达2.0m，且阴坡立地上细根密度特征值明显大于阳坡。

In sunny slope , the vertical distribution of the roots within 0.5 m from the stem could also reach that depth .

无论是在阴坡还是阳坡立地上，安塞刺槐细根表面积特征值均在土壤表层0～20cm处达到最大值，且随土层加深逐渐减小；

Both on shady and sunny slope of the two counties , the maximum value of fine root surface area presented soil surface ( 0 ~ 20 cm ) and then decrease slowly in Ansai County .

地表30cm土层的水分变化最剧烈，变异系数超过0.6，该层次的土壤水分含量阳坡和阴坡差异不明显；

In the 30 cm thick soil layer , the change of soil moisture was very severe , the variation coefficient was over 0.6 , but the difference of soil moisture between the shady and sunny slopes was not evident .

在70cm土层内，阳坡无水分调节层，而阴坡水分调节层厚度达30cm。

In the 70 cm thick soil layer , there was no adjusting layer of water on the sunny slope , and yet the thickness of water-adjusting layer was up to 30 cm on the shady slope .

0-2.0m土层供水量在不同坡向差异很大，阳坡0-2.0m土层供水量占总耗水量的97%，阴坡仅占67%。

The soil water between 0-2.0m is different in different slope direction . It accounts for 97 % of total soil water consumption in sunny slope and only 67 % in shady slope .

本文对大青山阴坡中部油松人工林地土壤水分、物理特性及林冠截留等进行了研究，主要研究结果如下：（1）林地土层厚度为35cm～104cm。

The soil water characteristics , the soil physical characteristics and the canopy interception of Pinus tabulaeformis plantation were studied in the middle shady slope of Daqing Mountain . The results showed that : ( 1 ) The thickness of the soil layer was 35 ~ 104cm .

中天山阴坡清除灌木的研究

A Study on Shrubbery Control on the Shade Slope of Mid-Tianshan Mountains

东坡（半阴坡）的土壤含水量>西坡（半阳坡）；

Soil water content of semi-shady slope > that of semi-sunny slope ;

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；

The soil physical properties have obvious vertical distribution characteristic in the slope .

在阳坡随封育时间延长乔木层盖度增长较快，而阴坡乔木层盖度增长较慢；

Canopy coverage increased more rapidly in sunny slope than that in shade slope .

阳坡物种数目总体要大于阴坡的物种数量；

Species number is bigger in the south slope than that of the north slope .

不同坡向的入渗率均表现为阴坡大于阳坡。

Infiltration rate in the shady slope is greater than that in the sunny slope .

该县坝上西北部为草甸草原，在沟谷侧坡和小丘阴坡有小面积针阔混交林分布；

The meadow steppe is distributed on the Bashan Plateau in the northwest of the county ;

阳坡的土壤种子库密度为阴坡的2.2~3.4倍；

Soil seed bank density in sunny slope was 2.2-3.4 times than that in shady slope .

通过对无公害栽培苹果园山楂红蜘蛛发生分布规律及防治措施的研究发现，无公害栽培苹果园越冬态山楂红蜘蛛种群数量为平地园>阳坡园>阴坡园；

The distribution patterns and control measures of hawthorn spider mite in pollutant-free apple orchards were studied .

该区域植被恢复宜从阴坡着手。

Therefore , the recovery of vegetation in this area ought to begin with the shade slope .

物种替代率阴坡高于阳坡。

The species turnover rates at the shady slopes were higher than those at the sunny slopes .

半阳坡虎榛子根系较半阴坡的生物童明显减少。

The root biomass on half sunny slope was obviously smaller than that of half shady slope .

阴坡较阳坡、低山较中山更适于混交林中不同物种的共存；

Many species coexisted better on shade slope than sunny slope and in lower mountain than middle mountain ;

阴坡和半阴坡的土壤厚度均大于阳坡和半阳坡。

The soil depth at shady and semi-shade slopes was much thicker than at the sunny and semi-sunny slopes .

不同生境的种群密度存在差异，其中阴坡种群密度最大；

The population density differed among different habitats with its highest point appearing in the habitats on sunny slopes ;

糠椴和黄榆种群随封育时间延长逐步衰退的现象在阳坡比阴坡表现明显。

Recession of Tilia mandshurica and Ulmsis laciniata populations in sunny slope was more obviously than that in shade slope .

发现在坡度<15°时，随坡度的增大，土壤含水量降低，在坡度>15°时，沙丘阴坡上土壤的含水量随坡度的增大而增加。

But the soil moisture increase with the slope degree increase on the north slope which is bigger than 15 ° .

而荒坡地的初始入渗速率和最终入渗速率均是阴坡高于阳坡。

Both initial infiltration rate and final infiltration rate of south slope were higher than those of north slope on bare-slope .

阳坡分枝数目为82.2个，阴坡为44个，两者之间有显著性差异。

The numbers of branch in sunny site was 82.2 , but in shady site only 44 , they had significant discrepancy .

生长在阴坡的刺槐人工林无性繁殖较阳坡旺盛，阴坡无性株萌蘖的数量和扩散范围明显大于阳坡；

Robinia pseudoacacia plantation reproduction proliferation in cloudy slope was better than that in sunny slope so were the numbers and regions ;

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α和β多样性进行了研究。

The traits of α and β diversity of different habitats of alpine grassland plant community in Eastern Qilian Mountains were studied .

阳坡样地A的平均风速减弱系数比阴坡样地A低13.67%。

The weakening coefficient of wind velocity to plot A in sunny slope is under 13.67 % by plot A in shady slope .

结果表明，当生境由阴坡向滩地到向阳坡变化时，各种α多样性指数的变化顺序为，物种丰富度：滩地>阴坡>阳坡；

The results showed that : from north-facing slope to south-facing slope and plain field , the species evenness and diversity index decreased ;