However remarkable impacts were observed in the plantation in terms of community physiognomy,community structure,species composition,species richness,and biomass accumulation.1 Planting trees made community structure simple.Betula alnoidis plantation had three layers including a dominant arbor layer,a complex and well developed shrub layer and a poorly developed vine layer.The arbor layer contained few species and had a single layer.The mountain rain forest had 4 layers including the dominant arbor layer,shrub layer,grass layer and vine layer.The vine layer was well developed and very rich in species composition,and the arbor layer contained as many as 38 species that could be grouped into 3 layers.2 Sequenced by the important value,main species for the plantation and the nature forest were totally different,and the plantation had one dominant species while the nature forest contained many dominant species.3 Planting trees changed the community physiognomy.

但是人工種植西南樺林對群落的季相外貌网上可看的欧美日皮大片网站、群落的結(jié)構(gòu)加勒比中文无码在线、物種組成羞羞答答视频在线观看、物種豐富度以及生物量等方面有較大的影響国模视频。1人工造林使得群落結(jié)構(gòu)簡化cao免费视频，西南樺人工林的層次結(jié)構(gòu)有3層三级片黄色成年人a片，以喬木層占優(yōu)勢，并且有種類多而發(fā)達的灌木層国产91色色，同時超碰精品在线免费，藤本植物欠發(fā)達，但是喬木層樹種單一中文字幕强奸视频观看，明顯僅有一層狼友视频在线精品；山地雨林的層次結(jié)構(gòu)有4層，以喬木層占優(yōu)勢日日色综合色色，還有灌木層久久精品视频色、草本層和藤本植物，藤本植物種類多久久久久久久一级毛片，十分發(fā)達操人人看人人摸人人插；喬木層樹種豐富，可達38種A免费网站视频在线观看视频，喬木層還可分為3層黄片毛片你人黄片毛片。2人工造林較大程度地改變了群落的物種組成，根據(jù)重要值的大小排列，人工林和天然林的主要物種組成已經(jīng)完全不同黄片在线免费看啊啊啊；并且人工林單優(yōu)樹種明顯中文字幕欧美亚洲，而天然林就含有較多的優(yōu)勢樹種。3人工造林改變了群落的外貌福利视频免费观看。

The wall of archives storehouse is a compound wall consisting of waterproof layer + protective layer + damp course + thermal insulation layer+ heat accumulation layer + interior decorative surface.

檔案庫房的墻體是一個由防水層+防護層+防潮層+絕熱層+蓄熱層+內(nèi)飾面組成的復(fù)合墻體国产城中村风韵犹存在线播放。

It is concluded that the match of K1 qn 1 source rock and its internal overpressure controls the range of oil accumulation and distribution, the vertical match of overpressure and T2 source fault controls the depth and layer of oil accumulation,the plane match of overpressure and T2 source fault controls the site of oil accumulation in Fuyang oil layer.

具體表現(xiàn)為：①青一段源巖生成油&倒灌&運移區(qū)內(nèi)T2源斷裂發(fā)育的區(qū)塊使扶楊油層油富集；②青一段源巖生成油&倒灌&運移區(qū)內(nèi)欧美视频黄网，距T2源斷裂越近国产精品久久久久久久三级，斷距越小，越有利于扶楊油層油富集播放一级毛片无码免费播放；③青一段源巖生成油&倒灌&運移區(qū)內(nèi)，油主要富集在T2源斷裂的下盤全国产在线。

accumulation layer：積累層

Accumulation region 積累區(qū) | Accumulation layer 積累層 | Active region 有源區(qū)

accumulation layer：聚積層

會計機 accounting machine | 聚積 accumulation | 聚積層 accumulation layer

accumulation layer：積層

"聚積","Accumulation" | "積層","Accumulation layer" | "累積器","Accumulator"