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G.E.Hubb root is from 0.20mm to 0.50mm, and 95% roots, diameter is thinner than 0.40mm. The total surface areas of roots is 10139.68cm^2, and the surface areas of roots is about 2 to 3 times to soil surface areas in the surface layer. Enlacing sod concretion to soil profile of Eulaliopsis binata G.E. Hubb root and the gigantic adsorption to soil grains of root surface are the mechanism why Eulaliopsis binata G.E. Hubb can reduce null and water loss significantly. The monitoring result from 2003 to 2004 indicates that, when the gradient is 12 degrees, the runoff rate of planting Eulaliopsis binata Retz. G.E. Hubb completely after changing slope land to ladder (PECC, so as the follows is only 49.90m^3/hm^2?yr. and the soil loss rate is 155.78kg/hm^2?yr, however, the runoff rate of fanning and being not change slope land to ladder is 314.29m^3/hm^2?yr that is 6.30 times to PECC ,and the soil loss rate is 3322.50 that is 21.33 times to PECC; When the gradient is 24 degrees, the runoff rate of planting eulaliopsis binata G.E, Hubb in the ridge and border slope land after changing slope land to ladder is 248.04m^3/hm^3?yr and the soil loss rate is 612.00kg/hm^3?yr. the runoff rate of PECC is only 42.44m^3/hm^2?yr and the soil loss rate is 153.75kg/hm^2?yr, however, the runoff rate of ENC reaches to 785.73m^3/hm62?yr that is 3.17 times to PERBC and 18.52 times to PECC, and the soil lose rate reaches to 37503m^3/hm^2 yr that is 61.33 times to PERBC and 244.12 times to PECC.
蓑草根系平均直径0.20~0.50mm, 95%的根系平均直径小于0.40mm,根系总表面积10139.68cm^2,在土壤表层根系表面积高达土体表面积的2~3倍,根系表面对土壤颗粒的巨大吸附作用是蓑草显著提高土壤抗侵蚀能力的另一个重要原因。2003~2004年的监测结果表明,在12度坡度情况下,坡改梯后净作蓑草年径流量仅49.90立方公尺/hm^2,年土壤流失量为155.78kg/hm^2,而未坡改梯且农作情况下,年径流量314.29立方公尺/hm^2为前者的6.30倍,年土壤流失量3322.50Kg/hm^2为前者的21.33倍;在24度坡度情况下,坡改梯后土埂及边坡种植蓑草、坡面农作年径流量248.04立方公尺/hm^2,年土壤流失量612.00kg/hm^2,坡改梯后净作蓑草径流量42.44立方公尺/hm^2,土坡流失量l53.75kg/hm^2,而未坡改梯且农作情况下年径流量高达785.73立方公尺/hm^2,分别为处理1的3.17倍,处理2的18.52倍,年土壤流失量高达37503kg/hm^2,分别为处理1的61.33倍,处理2的244.12倍。
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Secondary production of major groups of macrozoobenthos in Lake Donghu was estimated from field data. The number of generaion, P/B coefficients and production of 9 dominant species were as follows: B. aeruginosa, univoltine, 91. 56g WW/m〓. yr, 0.64; S. lacustre, univoltine, 43. 02g WW/m〓. yr, 3. 55; B. sowerbyi, univoltine, 11. 39g WW/m〓. yr, 4. 15; L. hoffmesteri, trivoltine, 7. 09 g WW/m〓. yr, 11. 9; P. choreus, bivoltine, 5. 03g WW/m〓. yr, 10.33; Ch. plumosus, bivoltine, 3. 37g WW/m〓. yr, 9. 10; T. chinensis, univoltine, 3. 76g WW/m〓. yr, 4. 49; T. akamusi, univoltine, 44. 60g WW/m〓. yr, 4. 60; Clinotanypus sugiyamai, univoltine, 0.48g WW/m〓.
较系统地研究了东湖底栖动物九种优势种的生活史、P/B系数和生产量,其结果如下:铜锈环棱螺:一年一代,生产量为91.56g WW/m〓。yr,P/B系数0.64;湖球蚬:一年一代,43.02g WW/m〓。yr,3.55;苏氏尾鳃蚓:一年一代,11.39g WW/m〓。yr,4.15;霍甫水丝蚓:一年三代,7.09 g WW/m〓。yr,11.9;花翅前突摇蚊:一年两代,5.03g WW/m〓。yr,10.33;羽摇蚊:一年二代,3.37g WW/m〓。yr,9.10;中国长足摇蚊:一年一代,3.76g WW/m〓。yr,4.49;大红德永摇蚊:一年一代,44.60gWW/m〓。yr,4.60;褐斑菱跗摇蚊:一年一代,0.48g WW/m〓。yr,7.59。
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From 6860 to 3170 cal.yr BP,semi-desert steppeexpanded,regional montane forest steppe retreated,suggesting a prolonged warm and dryclimate.Between 3170 and 2340 cal.yr BP,regional forest steppe expanded whereassemi-desert steppe retreated,indicating the climate became cool and wet gradually and thehumidity reached the maximum at the end of this stage.During 2340~1600 cal.yr BP,Poaceae steppe dominated whereas wetland meadow expanded and the montane forest stepperetreated,suggesting a cool and wet climate prevailed,wormwood grass steppe prevailed andthe climatic instability increased after 1600 cal.a BEThe climate and environmental reconstructions by pollen were supported by the diatomrecords.A relative high lake level and moister climate prevailed between 8660 and 7230 cal.yr BP as inferred by the dominance of planktonic diatom genera and high planktonic/benthicratio (〉40).low lake level and dry climate sustained during 7230~2330 cal.yr BP assuggested by the low abundance of planktonic diatom and low planktonic/benthic ratio ~20and the lake returned to high level during 2330~930 cal.yr BP as inferred by there-dominance of the planktonic diatom and the high value of palnktonic/benthic ratio.The pollen-based climate reconstruction was also consolidated by the grain size andPediastrum concentration records.
Ugii Nuur湖周围现代孢粉研究表明:松属为空气传播的外来花粉,其含量变化可能指示了远山森林草原发育状况;禾本科具显著低代表性,母体植物建群时含量通常在10%以下:藜科花粉含量可以指示区域气候干旱程度。2、以现代孢粉研究为基础、可靠AMS~(14)C年代为框架,Ugii Nuur孢粉记录高分辨率地重建了蒙古国中部地区过去8660 cal.yr BP以来的植被和气候变化。8660~7800 cal.yr BP研究区植被为禾草草原,湖畔及河谷低地发育苔草草甸,远山发育松属针叶林和森林草原,气候温和略湿润;其中8350~8250 cal.yr BP湿生草甸扩张,旱生植物成分减少,气候凉湿。7800~6860 cal.yr BP旱生成分增加,气候转向暖干。6860~3170 cal.yrBP半荒漠草原扩张,远山森林草原退缩,山地草原和河谷及湖畔湿生草甸退缩,气候持续暖干。3170~2340 cal.yr BP半荒漠草原退缩,远山森林草原扩张,气候转凉变湿,末期湿度条件达最佳。2340~1600 cal.yr BP禾草草原发育,湖畔及河谷低地湿生草甸扩张,远山森林草原略有退缩,气候总体较凉湿。1600 cal.yr BP以来研究区发育禾草-冷蒿草原,气候波动较大。
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There was a good correlation between Ptw,AVCtw,MVOtw,PTV,PUV,UntwR and age.2.Assessment of left ventricular twisting and untwisting of DCM patients19 DCM patients(range 18-80 yr,mean age 50.52±17.52 yr,2 females) and 21 age- and sex-matched normal controls(range18-80 yr,mean age 49.05±16.94 yr,5 females) were enrolled into this study.Then DCM patients were divided into two groups:E/A<2 group and E/A>2 group.The routine echo showed the left ventricle dilated and EF decreased.The results show that LV rotation degree, rotation velocity at baseline and apex were irregular changeable with the cardiac cycle;the rotation direction was clockwise at the base and counterclockwise at the apex,and are combined to yield a systolic counterclockwise twisting as seen from the apex,but the rotation at the basal and apex were the same direction in some patients.
扩心病患者左室扭转及解旋特征的研究选择扩张型心肌病(Dilated Cardiomyopathy,DCM)组患者19例(男性17例,女性2例,年龄18~82岁,平均50.52±17.52岁),健康体检者21例(男性16例,女性5例,年龄18~80岁,平均49.05±16.94岁)作为对照组,扩心病患者按照E/A分为E/A<2、E/A>2两个亚组,结果显示:常规超声显示DCM组LVDd值增大,EF值减小;DCM患者左室心底部与心尖部心肌旋转角度、旋转速度随心动周期变化曲线明显紊乱;与正常组比较,DCM患者左室整体扭转角度和速度分别为(6.49±1.82)°、(67.84±15.60)°/s,较正常人显著减低P<0.01左室舒张末及收缩末扭转角度DCM患者较正常人显著减低(P<0.01,左室舒张末及收缩末时间在DCM-E/A>2组较正常人及DCM-E/A<2组显著缩短P<0.01DCM患者左室解旋速度较正常人亦显著减低(P<0.01,左室功能轻中度减低(DCM-E/A<2)患者解旋率[(0.29±0.07)%]较正常人[(0.42±0.11)%]明显减低,但当左室功能重度减低(DCM-E/A>2)时左室解旋率[(0.63±0.35)%]较正常人反而增加;左室整体扭转角度、舒张末扭转角度、收缩末扭转角度、解旋与左室射血分数未见明显相关性。3。
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A relative low lake level between 8660~6010 cal.yr BPwas reflected by the clayey silt sediment with the median size less than 25μam and the sandcontent less than 4%,and the Pediastrum concentration was normally low.Between 6010 and2250 cal.yr BP,the median size and sand content increased greatly,and the Pediastrumconcentration raised sharply,suggesting a relative low lake level.After 2250 cal.yr BP,boththe median size and the Pediastrum abundance abruptly declined,suggesting the lake returnedto high level and the climate changed to humid.
UG04孔硅藻记录重建的湖泊水位变化基本上支持孢粉重建的古植被和古气候:8660~7230 cal.yr BP硅藻组合以浮游类主导,浮游/底栖比达40以上,指示水位较高,气候略湿润;7230~2330 cal.yr BP浮游类硅藻丰度和浮游/底栖比降低,湖泊处于低水位,气候干旱;2330~930 cal.yr BP浮游类硅藻丰度和浮游/底栖比增加,湖泊水位升高,气候湿润。
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Between 2,500 yr BP and 1,800 yr BP. This was a neo-glacial age with a cold snap. The ice-cap on the King George Island and Ardley Island advanced. Iso -static adjustment lowered the palaeo -first terrace at the edge of Ardley Island under the high tide sea level. This made the rookeries around Y2 lake disappear and Y2 lake changed into a lagoon. The fact of Y2 lake under the sea level was coincident with the radiocarbon age (2180±95 yr BP) of the modern third raised beach terrace with 14m-height above the sea level near Yin ' Ou lake in the Fildes Peninsula.
第二阶段,距今1,800至2,500年,该时期气候骤冷,温度急降,该时期乔治王岛的冰帽有所扩张,同时在阿德雷岛上也出现小规模冰进,由于&地壳均衡&补偿使得该岛边缘古一级阶地处于高潮海平面之下,Y2湖周围的企鹅聚居地消失,该时期 Y2湖沉积表现为泻湖相沉积,与 Y2湖相邻的 Fildes 半岛燕鸥湖边海拔14米的上升海滩的三级阶地14 C 年龄为2180±95yr。
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The Handloom rec'd from you is totally incorrect in both pattern and quality. But anyway, buyer has been approved yr boucle quality at yr submitted proto smpl.
你寄来的手织样在式样和品质上是完全错误的,但是不管怎样,客人确认了你送来的头样的仿呢品质。
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The Handloom rec'd from you is totally incorrect in both pattern and quality. But anyway, buyer has been approved yr boucle quality at yr submitted proto smpl. Pls kindly re-do and re-submit for our buyer approval and advise when can I receive it???
你寄来的手织样在式样和品质上是完全错误的,但是不管怎样,客人会在销售样中确认,请重新做并重新寄来给客人确认,请告知何时寄出?
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7Gm〓 in the 20 yr forest, 1139. 8gm〓 in the 80 yr forest and 912. 4 gm〓 in the climax forest, respectively. However, along with forest succession, the dominant tree species fine root annual production increases, whereas other arboreal and grass fine root annual production decreases.
白桦山杨幼林、白桦山杨成熟林与原始阔叶红松林中,细根年生长量分别为712.7gm〓、1139.8gm〓和912.4gm〓;但是,随着演替的进行,林地主要树种细根的年生产量会逐渐增加,其它木本和草本细根的年生产量则逐渐降低。
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In the 20 yr forest, 304. 6gm〓 C and 11. 6gm〓 N are inputted to the soil. In the 80 yr forest, 502. 3gm〓 C and 17. 2gm〓 N are inputted to the soil. In the climax forest, 430.3gm〓 C and 11. 9gm〓 N are inputted to the soil. Along with forest succession, the C inputted to the soil B layer by fine root increases because of the deepening of root depth distribution.
白桦山杨幼林、白桦山杨成熟林与原始阔叶红松林中,细根每年向林地周转的碳量分别为304.6gm〓、502.3gm〓、430.3gm〓,氮量分别为11.6gm〓、17.2gm〓、11.9gm〓;其中,随着演替的进行,由于根系分布的加深,细根每年向土壤B层周转的碳量会逐渐增加。
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- 推荐网络例句
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As of Tuesday, Google's results were still censored in China.
截至周二,谷歌的搜索结果仍受中国审查。
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In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.
在这一过程中,人的主体性发挥是社会有机体健康发展的灵魂。
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Objective To investigate the relationship between the telomer ase activity and apoptosis in gastric cancer.
目的为了探讨胃癌组织中端粒酶与细胞凋亡的关系。