Study on volume and velocity of stem sap flow of Haloxylon ammodendron by heat-pulse technique;
采用热脉冲法对梨树树干液流速度径向变化规律进行了系统研究。
The best sowing time of Haloxylon ammodendron in the east of Helan Mountain in Ningxia autonomy is studied.
目的:研究确定宁夏贺兰山东麓梭梭育苗的适宜播种期。
By setting up mechanical sand barriers on degenerated Haloxylon ammodendron woodland, the roughness of woodland increased; the wind speed an.
布设机械沙障可使退化梭梭林地表粗糙度增大,林内近地面层风速、输沙量显著下降。
At the center of haloxylon ammodendron, the content of soil element was higher than other regions, and displayed"fertile island"and"salinity island".
研究区梭梭中心各土壤要素含量均高于周围,表现出“肥岛”和“盐岛”特征;
The effect areas of haloxylon ammodendron within canopy, and at the south of haloxylon ammodendron appeared other island structure, it impossible related to the direction of wind.
梭梭的有效作用范围在冠幅之内;梭梭南部冠幅之内还出现其它小的岛状结构,这可能与研究区的风向有关。
The effect areas of haloxylon ammodendron within canopy, and at the south of haloxylon ammodendron appeared other island structure, it impossible related to the direction of wind.
梭梭的有效作用范围在冠幅之内;梭梭南部冠幅之内还出现其它小的岛状结构,这可能与研究区的风向有关。
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