shady slope

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.

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。

互联网摘选

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.

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。

互联网摘选

The evaporating amount of water surface of the sunny slope was 18.04% more than that of the shady slope in the dry season.

旱季阳坡水面蒸发总量较阴坡高18.04%；

互联网摘选

( 7) Stem diameter, height, crown height and crown width in the shady slope were significantly greater than that in the sunny slope.

阴坡油松的胸径、树高、冠高和冠幅均显著大于阳坡。

互联网摘选

The distribution of plant community fits the characteristics of mountainous desert grassland. The most types of the community are in the shady slope of the mountain.

植物群落分布体现了山地荒漠草原的特征，多数植物群落类型分布在山地阴坡；

互联网摘选

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

阳坡样地A的平均风速减弱系数比阴坡样地A低13.67%。

互联网摘选

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

阳坡的土壤种子库密度为阴坡的2.2~3.4倍；

互联网摘选

The result shows that soil water storage ability in the forestland ( especially arbor in shady slope) and grassland is the best, the farmland, the middle, and the wasteland, the worst.

结果表明：该流域内林草的土壤蓄水能力最好，农地居中，裸地最差，尤其以阴坡乔木树种的蓄水能力最好；

互联网摘选

Spectral analysis showed that Chinese pine population in the different site have different growth cycle, and the cycle length on sunny slope is bigger than shady slope.

谱分析表明，不同立地的油松种群生长周期不同，油松种群的周期长度为阳坡阴坡，同时大周期内有小周期的波动。

互联网摘选

The depth of the vertical distribution of both leading roots and absorbing roots on half shady slope was larger than on half sunny slope.

在半阴坡立地上，无论是疏导性根还是吸收性根，垂直分布深度均明显较半阳坡大；

互联网摘选

The key techniques were presented as follows: ( 1) Planting site should be selected in the sunny slope instead of in the shady slope and hill gully.

提出了其关键技术措施为：（1）植地应选在阳坡，忌种在阴坡和山窝；

互联网摘选

Second, total phenols content in the leaves, roots or one-year-old twigs in shady slope was significantly higher than that in sunny slope.

夏蜡梅阴坡的叶、根、一年生枝等器官的总酚含量显著高于阳坡。

互联网摘选

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

不同坡向的入渗率均表现为阴坡大于阳坡。

互联网摘选

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.

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。

互联网摘选

The DBH growth of the two forests was declined greatly after 13 years, but the decrement was obviously less in shady slope forest than in sunny slope forest.

两种林分的胸径生长量在13年生以后明显降低，但阴坡林分的降幅明显小于阳坡林分；

互联网摘选

The proportion of the soil heat flux under vegetation to slope net radiation: the sunny slope about 16%, the shady slope about 12%, are much more than that of the storing heat of the vegetation to slope net radiation ( < 1%).

植被层下土壤热交换量占净辐射量比例：阳坡约16%，阴坡约12%。

互联网摘选

Seed rain in sunny slope started earlier than that in the shady slope in same distribution region, while apparent peak time was presented in shady slope.

同一分布区，阳坡落种早于阴坡，而阴坡落种高峰期较集中。

互联网摘选

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.

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%。

互联网摘选

The basal area proportion of Dahurian larch should be controlled to 90%-95% on shady slope and to 85%-90% on sunny slope.

落叶松断面积在阴坡应控制在90%～95%，在阳坡应控制在85%～90%；

互联网摘选

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

半阳坡虎榛子根系较半阴坡的生物童明显减少。

互联网摘选