By the analysis of the dead leaves and branches and the holding water contents of five type standing forests—birch and larch mixed forest, larch planted forest, Chinese pine planted forest, birch natural forest and shrub forest in Wutai Mountain area, central Asia alpine region, the water conservation benefit among them was compared.

為了探討不同林分水源涵養(yǎng)功能，為地域林業(yè)發(fā)展樹種規(guī)劃提供技術(shù)依據(jù)男人的视屏超碰女人帮，該研究以中亞高山區(qū)五臺山林區(qū)內(nèi)五種不同類型林分為試材亚洲可以免费在线观看的黄色网址，調(diào)查分析了不同林分的枯落物及其持水量，比較了不同林分類型的涵養(yǎng)水源效益看毛毛片网站。

The water conservation benefit of soil for different forests was 277.28%-173.67% higher than that of grass slope, among them, the highest one was birch and larch mixed forest, the followings were larch planted forest, Chinese pine planted forest, birch natural forest, and the lowest one was natural shrub forest.

林地土壤的涵養(yǎng)水源效益比荒草坡高277.28%~173.67%福利精品一区，其中白樺落葉松混交林最高，落葉松人工林欧美性爱大战、油松人工林黄色片子一级片、白樺天然林次之，灌木林最低台湾三级片电影AAAA。

For slender branch sweet vetch which is up to 40.6% only, and analysis of variance proves that sand willow shrub forest reducing close stratum effect of wind speed has obvious advantages fully too. The seventh, there are many aspects of ecological benefit of city forest in arid and semi-arid areas.

第六一级毛片一级毛片免费的啊、根據(jù)多目標灰色關(guān)聯(lián)度評價結(jié)果，適應干旱半干旱風沙區(qū)城鎮(zhèn)庭院綠化的針葉喬木樹種為：云杉欧美性交在线电影、落葉松和樟子松午夜福利照片，其關(guān)聯(lián)度評價值分別達到0.7720、0.7718和0.7622色呦呦在线观看1区2区；落葉闊葉喬木樹種為：山桃欧美性交ααα,AAA、垂柳、垂榆粗大猛烈进出高潮视频大全，其關(guān)聯(lián)度評價值分別達到0.9554欧美淫荡性交免费、0.8631和0.8362；花灌木樹種為：玫瑰在线免费看国产黄、沙地柏和黃刺玫久久精品国产国产精福利，其關(guān)聯(lián)度評價值分別達到0.79162级a片网站免费看、0.7730和0.7492。

dwarf shrub：矮灌叢 矮生灌木

dwarf forest 矮林 矮林 Y | dwarf shrub 矮灌叢 矮生灌木 Y | dwarf shrub heath 矮石南灌叢 矮生石南叢 Y