查询词典 Artemisia

The key species in the pioneer species period is Achillea capillaries, Izeris denticulate, Salsola colliha., than the key species gradually change to Potentilla spp, Heteropappus altaicus, Cleistogenes spp in the species gradually prosperity period, Lespedeza dahurica, Stipa bungeana, Artemisia sacrorum in the species quasi-steady period, Lespedeza dahurica, Artemisia sacrorum in the species relatively steady period, Peri ploca sepium Bunge, Clematis fruticosa turcz, Spiraea spp in the bush pioneer species invasion period.

其中先锋植物物种期以茵陈蒿、苦买菜、猪毛菜为关键种；物种渐繁荣期以委陵菜、阿尔泰狗哇花和隐子草为关键种；物种鼎盛期多物种共存，关键种不明显；物种准稳定期以长芒草、铁杆蒿和达乌里胡枝子为关键种；物种相对稳定期以铁杆蒿、达乌里胡枝子为关键种；灌木先锋物种主要有杠柳、木本铁线莲、绣线菊等。

The dominant species of them were Artemisia halodendron Setaria viridis respectively; The reconverted grazing land and the natural reconverted farmland consisted of herb layer and microbiotic crust layer, but itsmain layer was herb layer. The dominant species of them were Cenchrus calyculatus Artemisia scoparia respectively.

草本片层的现阶段优势种为狗尾草；放牧自然恢复地和退耕自然恢复地均由草本片层和生物结皮片层构成，但其主要片层均为草本片层，该层现阶段优势种分别为黄蒿和光梗蒺藜草。

Thirdly, the ratios of Chenopodiaceae/Artemisia and Betula/Artemisia, which are good indices for moisture, exhibit a significant increase and a sudden decrease, respectively, at ～4.5 Ma.

青藏高原在～4.5Ma发生的隆升可能是导致这次亚洲内陆干旱化的主要驱动因素，高原对暖湿气流的屏障和加强季节性反差可能是导致干旱化的重要途径。

The fossil pollen date showed that vetetation changed from desert steppe dominated by Artemisia in early Holocene, though desert dominated by Chenopodiaceae at 9.0-6.3 ka, desert steppe dominated by Artemisia at 6.3-2.5 ka, to desert dominated by Compositae at 2.5-1.0 ka and Chenopodiaceae after 1.0 ka.

青土湖剖面孢粉分析结果显示，该区9.0ka之前为蒿属为主的荒漠草原，9.0～6.3ka藜科为主的荒漠，6.3～2.5ka蒿属为主的荒漠草原，2.5～1.0ka菊科为主的荒漠，1.0ka之后为以藜科为主的荒漠。

The surface of its seeds is covered by a layer of gum, Artemisia seed polysaccharide. ASP has been found to possess high viscosity which is 1800 times as much as that of gelatin and strong hydroscopicity, for which it can absorb 60 times its self weight of water, and there are aslo a great of oil in its seeds, Artemisia oil.

其种子表面富含一层胶质——ASP，ASP有很多优良的特性，如吸水性——可吸取自身重量60倍的水，高粘度——是明胶的1800倍；同时，沙蒿种子中又含有大量的油脂——沙蒿油，其又有着丰富的亚油酸。

Phragmites Australis, Ael uropus liitoralis, Zoysiamacrostachya, Messerschmidia sibirica, Limonium bicolor were the main vegetation types in the chenier seaside, but in the chenier plain, Artemisia annua, Artemisia mongolica and Herba Heteropappi Altaici occurred frenquently.

通过对无棣贝沙堤植物多样性的分析发现，样方内共出现物种20余种；同时，贝沙堤向海面和贝壳滩脊、向陆一面分别分布着以芦苇、獐茅、大穗结缕草、二色补血草、砂引草以及以青蒿、蒙古蒿、阿尔泰紫菀为优势种的群落。

It showed that the niche breadth and niche overlapping indexes of the enclosed grassland in 2007 are much lower than in 2006 as a whole; The niche breadth of Artemisia ordosica is bigger than other species in the region in 2002. In 2003, the dominant species were Artemisia ordosica and Salsola ruthenica. Their niche breadth indexes were 0.544 and 0.460 respectively. The results of niche overlapping in 2006 and 2007 also showed that the species with big niche breadth didn't always have big niche overlapping, and the niche breadth and niche overlapping did not have a positive direct linear relation.

结果表明：2007年封育区植物种的生态位宽度及种间的生态位重叠指数总体上较2006年有所降低；2006年黑沙蒿生态位宽度最大，达0.768，是06年封育区的优势种；2007年封育区的优势种为刺沙蓬和黑沙蒿，其生态位宽度值分别为0.544、0.460；2006年和2007的生态位重叠结果均表明，生态位宽度大的物种不一定和其他物种有大的重叠指数，较高的生态位宽度和较高的生态位重叠之间并不存在直接的线性关系；2006年、2007年较高的Pianka生态位重叠指数都出现在生态位宽度较小的物种之间。

The results show that the bioaccumulation coefficience in the aboveground of Scnecio vulgaris、Sonchus brachyotus、Znula Britannica、Artemisia scoparia、Artemisia annua、Peucedamum terebinthaceum and Polygonum bungeanum are more l respectively,and the concentration of Cd in the aboveground of plant is more than that in root,which possessed basic characteristics of hype...

结果表明：欧洲千里光、巨荬菜、欧亚旋覆花、猪毛蒿、黄花蒿、石防风和柳叶刺蓼 7种植物对 Cd的富集系数最大，且地上部 Cd的含量大于根部 Cd的含量，具备了重金属超富集植物的基本特征；植物地上部重金属含量与植物上部生物量的大小无关；以杂草为研究对象，有可能筛选出地上部重金属富集量大并且地上部生物量也高的超富集植物。

With methods of limited areas, root systems of plant individuals were limited in a specific range, providing definite spatial boundary and solid basis for calculation of water requirement needed by plant individuals. On the basis of calculation of amount of water requirement, areas needed by every species to ensure enough water requirement are as follows: Populus simonii is 80.3m〓, Ulmus macrocarpa is 35. 4m〓, Artemisia halodendron is 7. 0m〓, Salix gordejvii is 11. 2m〓. Prunus armeniaca is 15. 2m〓, and Caragana microphylla is 15. 6m〓. The corresponding rational density of plantation which can maintain soil water balance and can ensure plantation stability is 125 individuals/ha for Populus simonii, 285 individuals/ha for Ulmus macrocarpa, 625 individuals/ha for Prunus armeniaca, 625 individuals/ha for Caragana microphylla, 833 individuals/ha for Salix gordejvii, and 1428 individuals/ha for Artemisia halodendron, respectively.

运用有限面积法将植物根系限制在明确的边界内，为植物耗水量的计算提供了一个明确的空间边界范围和可靠的基础，探索性和尝试性地得出了近似野外真实状态下植物个体的耗水量，以此为基础计算得出小叶锦鸡儿、山杏、黄柳、差巴嘎蒿、榆树、杨树等树种的水分营养面积分别是15.6m〓、15.2m〓、11.2m〓、7.0m〓、35.4m〓和80.3m〓，与此对应的能够维持林地土壤水分平衡和林分稳定性的各树种人工林的合理密度为：杨树125株/公顷，榆树285株/公顷，杏树625株/公顷，小叶锦鸡儿625株/公顷，黄柳833株/公顷，差巴嘎蒿1428株/公顷。

The Rhizosphere effect of soil bacteria of Artemisia halodendron was the most obvious on shifting sandy land, that of semi- withered Artemisia halodendron was the least on fixed sandy land because it had lost basically physiological active, and the roots had mostly withered.

随着土壤质地的变化流动沙地上差巴嘎蒿根际微生物的根际效应最为明显，而固定沙地濒临死亡的差巴嘎蒿已基本丧失生理活性，根系大部分枯死，根际效应最小。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。