The stem flow of spruce and larch had acidulation on the soil, but the soil around the bole of spruce didn't present intensive acidity (the lowest pH of water and KCl immersion were 5.13 and 4.79, respectively), so the acidulation of stem flow is not the direct reason of spruce death.

雖然兩樹種樹干徑流對土壤均產(chǎn)生了酸化作用禁止18以下观看在线网站，但由于云杉樹干周圍土壤PH并沒有出現(xiàn)較強的酸性（水浸pH下降到5.13一级作爱视频无遮拦，鹽浸pH下降到4.79），因此城中村按摩一区二区在线观看，還不能認為云杉的衰退死亡與樹干徑流的酸化作用有直接關(guān)系欧美A片一级免费黄色视频。

Since the mid-1970s, about 50 percent, or 1 million acres (400,000 hectares), of the Kenai Peninsula's adult spruce trees have succumbed to the spruce bark beetle.

自從20世紀70年代中期中文字幕精品视频在线观看，大約50％，或100萬英畝（400国产美女精品色好看，000公頃）97网友上传精品免费视频，奇奈半島的成年云杉樹已經(jīng)屈服于云杉樹皮甲蟲。

Forest Service has enlisted spiders in the war against the spruce budworm, the Northeast's most devastating enemy of spruce and fir forests.

在緬因州美女在线A级毛片，美國林業(yè)局的丹尼爾-詹寧斯征募蜘蛛來與云杉芽卷蛾——東北部云杉和冷杉林最兇惡的敵人——作戰(zhàn)超碰公开在线久。

Spruce Tree House is the easiest cliff dwelling to visit. The path curves down into the valley and then up to the ruin.

云杉屋是最容易參觀的崖居，通往云杉屋的道路蜿蜒曲折而下到峽谷日本黄色网站进入入口，然后向上到達這個崖居黄色视频图片一区。

Here,man shan bian ye growing spruce, Picea edulis, Qinling fir, Chinese pine, larch's wave, pine, cypress Parker, Quercus, Birch, Poplar and other trees and peonies,wu jiao feng , herbaceous peony, wild lilac, boxwood, coquelicot, Ma orchids, azaleas and other shrubs more than 700 kinds of Section 50, the distribution of the Ciwujia, Cordyceps sinensis, Coptis, Banxia, Fritillaria, Asarum, rhubarb, etc. more than 100 kinds of medicinal plants, soft Lin Morchella inlaid on the floor, wild mushrooms and other edible fungi.

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Here,man shan bian ye growing spruce, Picea edulis, Qinling fir, Chinese pine, larch's wave, pine, cypress Parker, Quercus, Birch, Poplar and other trees and peonies,wu jiao feng , peony, wild lilac, boxwood, coquelicot, Ma orchids, azaleas and other shrubs more than 700 kinds of Section 50, the distribution of the Ciwujia, Cordyceps sinensis, Coptis, Banxia, Fritillaria, Asarum, rhubarb, etc.

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The enzyme activity in the chrysanthemum alp and couch grass is higher than the one in spruce forest.

總體上看狼色精品人妻在线视频免费，繡線菊茅草灌叢群落、茅草群落的過氧化氫酶国产一级婬片A网站、脲酶和蔗糖酶的酶活性均高于云杉針葉林群落强奸女人毛片；而云杉針葉林群落的過氧化氫酶活性很高，脲酶和蔗糖酶活性較低黄片久久久动漫。

Through the study on the soil microorganism, soil enzyme activity in spruce forest, chrysanthemum alp and couch grass in the subalpine forests in western Sichuan, the result shows that the relativity of the soil microbial quantity is very prominent in the soil. The relation with the quantity of the soil microorganism is microphyte 〉 actinomycete 〉 fungi.

：通過研究川西亞高山云杉林jiizz日本护士老师高潮、繡線菊一茅草群落97大学生情侣酒店自拍亚洲精品、高山柳群落和茅草群落等林地的土壤微生物數(shù)量和酶活性的變化国产一级A片XXXXx，結(jié)果表明：云杉針葉林群落中的土壤微生物數(shù)量最多，繡線菊茅草灌叢群落次之国产麻豆区精品系列在线，茅草群落最少欧美日韩视频在线播放。

When the tree changes from health to weak, the main terpene compounds changed, such as the amount of 3-carene, isolimonene,β-pinene, 4-carene were significantly enhanced, and santolina triene,α-fenchene,β-myrcene,β-phellandrene were declined. It will provide a basis for Monochamus urussovi Fischer to select suitable parasitic Picea jezoensis.

魚鱗云杉樹勢由健康向衰弱轉(zhuǎn)變時，主要烯萜類化合物含量發(fā)生變化亚洲狠狠草视频，3-蒈烯国产综合色一区二区三区、異檸檬烯午夜少妇性私人影院、β-蒎烯、4-蒈烯欧美久久久抽搐视频、α-蒎烯等含量顯著上升野花社区大全免费观看3超碰，而神圣亞麻三烯、α-葑烯欧美三级欧美一级69、β-月桂烯久久夜色精品、β-水芹烯等含量下降，這些烯萜類化合物的變化98精品视频在线，為云杉大黑天牛定位選擇適宜寄生的魚鱗云杉提供了依據(jù)国产又黄又湿又色的免费网站。

After esterification by BTCA Acoustic properties of picea sitchensis Carr.andChamaecyparis Iawsoniana ParI were changed,(treated/untreated ratio):Loss tangentdecreased 10～2424% in the tangential ofpicea sitchensis Carr,9～17% and 10～22% in thetangential and radial directions of Chamaecyparis Iawsoniana ParI.,respectively.Specificdynamic Young's modulesand acoustic radiation coefficient of two wood changedunremarkably,in the tangential direction with increment of ASE.Specific dynamic Young'smodulesincreased 3～9% in the radial direction.tgδ/E of decreased 9～27% intangential of picea sitchensis Carr,7～14% and 10～26% in the tangential and radial directions ofChamaecyparis Iawsoniana ParI.,respectively.

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