Due to the inclemency of climate and soil conditions and the intense disturbance of human beings,the soil resources heterogeneity in arid and semi arid grassland ecosystems worldwide was gradually increased during the last century.

世界許多干旱日韩网红美女主播自拍视频在线播放、半干旱地區(qū)草地生態(tài)系統(tǒng)逐漸被灌木生態(tài)系統(tǒng)取代黑人性爱黄片，這種取代過程的發(fā)展是由灌木冠幅下土壤中"肥島"的形成和灌木的擴散相互作用直接造成的。

In this paper, as a case of Karamay, we have studied on space-time changement of soil quality in oasis of arid area. We measured quality for different land use types and years in same type by combinativing field sampling for Karamay in Xinjiang and analysis in laboratory, which is directed by former theory of soil quality. Then we did integrated evaluation of soil quality for different land use types, and had drew some conclusions as followed: In four land use types, the soil bulk density of layers(0～15cm) for farmland and tree land is bigger than the other land use types.The organic matter of every layer in manpower Tamarix Bulrush land is bigger; organic matter of Tamarix Bulrush land release efficiency nitrogen which result ration of C/N is higher; total nitrogen of all layers in farmland variety great as being effected by mass use of nitrogen in agriculture; deadwood and defoliation of tree国产全程粗口对白、shrub and bulrush pooled in 5cm layer to result that quick nitrogen is the biggest among all layers. The total salt of nature shrub tree land for every layer being bigger than farmland explain that nature shrub thee land strongly stand salt and farmland for basification in this area; that the nutrient of face layer is bigger than the ground layer may be explained by that vegetation gather nutrient to be stored in deadwood and defoliation.

本文對以克拉瑪依為例美女狂摸尿口动态图GIF，對干旱區(qū)綠洲土壤質(zhì)量的時間空間變化進行研究，在有關(guān)土壤質(zhì)量的研究理論指導(dǎo)下免费看到女人爽到高潮的视频，通過田間調(diào)查取樣和室內(nèi)分析相結(jié)合的方法，對新疆克拉瑪依市農(nóng)業(yè)開發(fā)區(qū)的不同土地利用方式及同一土地利用方式下不同利用年限土樣土壤理化性質(zhì)進行測定亚洲激情小说视频，從而對新墾綠洲不同土地利用類型土壤質(zhì)量進行綜合評價黄视频在线无限免费看，結(jié)果如下：四種土地利用方式中，農(nóng)地一本久道综合在线无码视频、喬木林地表層(0-15cm)土壤容重較大在线观看A网址；各土層人工檉柳蘆葦?shù)氐耐寥烙袡C質(zhì)含量均較大；檉柳蘆葦?shù)氐挠袡C質(zhì)在礦化過程中所釋放出有效氮精品视频在线影院，導(dǎo)致檉柳蘆葦?shù)氐腃/N比例較高乱人伦熟妇中文字幕；受到農(nóng)業(yè)耕作使用大量氮肥的影響，農(nóng)地各土層全氮含量變異較明顯Jizz美女18；喬木亚洲一片二片三片、灌木及蘆葦?shù)目葜β淙~主要集中在5cm范圍之內(nèi)，導(dǎo)致幾種土地利用方式類型下該層土壤速效氮最大日韩无码激情免费网站视频；天然灌木林地的土壤總鹽在各層均較大欧洲性爱免费三级片，其次是農(nóng)地，說明天然灌木林地的高耐鹽能力性爱在线观看，以及該區(qū)農(nóng)業(yè)生產(chǎn)用地的土壤鹽堿化程度較重与子乱互换乱婬视频。

Relating to,resembling,or assuming the form of a shrub ; shrub by.

灌木狀的具有灌木外貌的国产AⅤ熟女乱视频、象灌木的與灌木有關(guān)的；灌木的

Biomass of 10 plant species including Castanopsis fargesii,Pleioblastus amarus, Lindera strychnifolia,Vaccinium bracteatum,Ficus simplicissima(approximately account for 37%of total plant species in shrub layer) account for 84.15%of total biomass in shrub layer.Biomass of Woodwardia japonica and Blechnum orientale account for 93.3%of total biomass in herb layer.

在灌木層中亚洲三级乱伦一区二区，絲栗栲亚洲色图国产专区、苦竹、烏藥福利在线国产、烏飯国产精品一区二区精品视频、三龍爪等10種灌木層植物(約占總灌木層種類的37％)占灌木層總生物量的84.1％；在草本層中老司机午夜免费精品视频在线观看，狗脊和烏毛蕨2種植物占草本層總生物量的93.3％国产www性性，這說明林下灌木層和草本層植物的生物量主要集中在少數(shù)植物種類中。

Except for Phragmites australis community,other communities were mainly the dwarf shrubs,semi-bush. Analyse from the number of plants,Ephedraprzewalskii community,Potaninia mongolica maxim community,Kalidium foliatum community and Leguminose community,all were more than 90 percent;Among Reaumuria community,Caragana community and Zygophyllum xanthoxylum community,Nitraria community,the shrub layer was not dominance in the quantity,but herb layer was most of the smaller annual herb.

群落中除蘆葦群落以外337啪啪肉体，其它各群落以矮化的灌木欧美一级男女插穴视频、半灌木為主；從植株數(shù)量上分析欧美也操也射视频，膜果麻黃群落天天操天天操三级、綿刺群落、鹽爪爪群落和貓頭刺群落的灌木亚洲性交性爱网、半灌木均在90%以上网黄网址免费；而紅砂群落、檸條群落和木霸王群落雖然灌木層在數(shù)量上不占主導(dǎo)優(yōu)勢久久精品视频官网，但草本層大多數(shù)是較小的一年生草本国产精品一区二区视色。

By analyzing soil quality of 4 kinds of land use types in Kalamay agriculture development area according to principal component analysis, we draw the conclusions: nature shrub tree land is affected little by mankind, a great deal of organic matter return to soil every year, and root system can improve soil physical quality, can absorb salt from soil, so the soil quality of nature shrub tree land is the best; the soil quality of farmland is better than the soil quality of manpower Tamarix Bulrush land, which may be reasoned that man make for soil quality by irrigation to exclude salt and fertilizing organic muck in the earlier oasis digging up period. Soil physical qualities of tree land get harden and worsen for flooding irrigation, furthermore climate in Kalamay is dry and rainless , the other irrigation is very long time after the former one, so soil get harden severity and result soil physical quality get worse and worse.

利用主成分分析法分析新疆克拉瑪依農(nóng)業(yè)開發(fā)區(qū)四種土地利用方式下的土壤質(zhì)量，得出：天然灌木林地国产免费吃奶摸下视频在线观看，受人為影響較小新品黄色视频在线观看免费，每年有大量有機物質(zhì)返還土壤，且天然灌木的根系可以很好的改良土壤的物理性質(zhì)欧洲一区视频在线观看，同時所選天然灌木林灌木多是耐鹽堿并且本身又具有吸收積累來自土壤的鹽分情侣黄色网站免费看，土壤質(zhì)量最好；農(nóng)田受到的人為影響最大三级片手机在线视频，但農(nóng)田綜合得分卻好于人工檉柳蘆葦?shù)鼐C合得分亚洲精品国产精品麻豆99，這可能是由于在開墾初期的綠洲農(nóng)田，受到了人們灌水壓鹽及增施各種有機無機肥料等有利于土壤質(zhì)量提高的措施所致男人操女人黄网站；喬木林地亚洲一级片免费视频，由于人們用大水漫灌的方式灌溉，致使林地土壤變得板結(jié)美女不带套日出白浆免费视频，土壤物理性質(zhì)下降三级爽片免费观看黄片，加上克拉瑪依地區(qū)氣候干燥少雨，一次灌溉后較長時間后才有下一次灌溉美国淫色网，致使土壤理化性質(zhì)惡化男女日逼视频，土壤質(zhì)量不高欧美老女人性爱网站。

The analyses of social and economic development indicate that, up to 1998, the total population in Yijinholo County is 143, 949 persons, the population density is 24 persons per square kilometer, large population number results in land exploitation for food and overgrazing in rangeland. The change in temporal and spatial pattern of landuse from 1977 to 1998 demonstrates that mobile sand dunes was replaced by rangeland and woodland and partial shrubland in the middle of study area changed into rangeland and farmland from 1977 to 1987, while mobile sand dunes and rangeland transformed into shrubland and farmland in a small parts from 1987 to 1998, the above-mentioned change is proved by the change of fractal dimension index and fragmentation index at landscape and its element levels.

對近50年來伊旗社會經(jīng)濟發(fā)展的分析結(jié)果表明，雖然人口增長率基本上呈下降趨勢91超碰一区二区三区，但由于人口基數(shù)較大啪在线看，截至1998年底，伊金霍洛旗的人口總數(shù)達(dá)143949人亚洲国产欧美在线人成大黄瓜，人口密度為24人／平方公里亚洲精品国精品久久99热一，較高的人口密度帶來了更多的生存需求，使得大量的草牧場被開墾亚洲可以免费在线观看的黄色网址，而剩余的則嚴(yán)重超載欧美AAAAA黃色。1977-1998年間伊土地利用結(jié)構(gòu)總體格局變化的分析結(jié)果表明，1977-1987時段內(nèi)主要是流動沙地為草牧場和喬木林地所取代福利精品一区，伴隨著中部的部分灌木林地轉(zhuǎn)換為草牧場和農(nóng)地：而1987-1998時段內(nèi)主要是草牧場和流沙地為灌木林地和農(nóng)地特別是灌木林地所取代国产日韩精品腹肌视频迅雷下载，而景觀及各景觀要素的分維度指數(shù)和破碎度指數(shù)的變化也充分證實了這一結(jié)論，雖然在前10年（1977-1987年）中大面積的灌木林被砍伐99reshipin，但土地利用格局的整體變化間接地反映出該時段內(nèi)荒漠化的狀況正在發(fā)生逆轉(zhuǎn)玖色网站。

The feature adaptation of P.rigidula and the evolution of the parasitic shrubs had been discussed. Some of the characteristics based on the superparasitic chains elucidate the evolutionary processi...

討論認(rèn)為，重寄生鏈上的一些漸變特征展現(xiàn)林木上寄生灌木具有 2個演化階段欧美激情偷乱人伦小说，即以自養(yǎng)樹木為寄主的半寄生灌木演化階段5555www，和以樹木上半寄生灌木為直接寄主的重寄生灌木演化階段；重寄生屬植物特殊的生活習(xí)性和形態(tài)結(jié)構(gòu)特征日韩毛片一区二区三区，是與其在寄主桑寄生科半寄生灌木上生活的特殊環(huán)境相適應(yīng)的91网站在线观看精品，是與其寄主、傳播花粉螞蟻類昆蟲和傳播種子鳥類協(xié)同演化的結(jié)果免费黄色在线网站。

In wetter habitats, forbs were more abundant and accounted for the majority of aboveground biomass, whereas grasses became more important in dryer habitats. Shrubs and sub-shrubs increased with decreasing soil water availability and their relative biomass rapidly increased in degraded steppe and sand dune; perennial grasses had significantly higherδ〓C values than other PFGs; the δ〓C values of perennial grasses and forbs increased with decreasing soil water availability, while those of shrubs/sub-shrubs showed an inverse trend.

在較濕潤生境人人爽人人看，多年生雜類草更加豐富并構(gòu)成了群落地上生物量的絕大部分；而在較干旱生境下欧美淫荡性交免费，多年生禾草在群落中起更重要的作用；隨著土壤含水量下降在线免费看国产黄，灌木和半灌木逐漸增多久久精品国产国产精福利，且在退化草地和沙地中其相對生物量迅速增加；多年生禾草δ〓C值顯著高于其它功能群免费无码国产永久；隨著土壤水分可利用性降低日韩性色自拍视频在线观看免费播放，多年生禾草和雜類草的δ〓C值表現(xiàn)出增加的趨勢，而灌木/半灌木則表現(xiàn)出相反的趨勢人人摸人人操人人插。

The effect of wind protection of shrub and half-shrub is the best, and the effect of bush is better than individual shrub's, the that of the trees is the worst.

灌木爱看AV在线官网、半灌木的防風(fēng)效應(yīng)最佳，叢生灌木的防風(fēng)效應(yīng)高于單株灌木的防風(fēng)效應(yīng)欧美官网在线观看，喬木防風(fēng)效應(yīng)最差好叼爽,这里只有精品。

cashew：灌木 腰果

灌木 蜂蜜 honey | 灌木 腰果 cashew | 灌木 生韭蔥 raw shallots

cloves：灌木

灌木 macadamia nut | 灌木 cloves | 灌木 coriander

antonican coffee bean：灌木 安東尼卡咖啡豆

灌木 莫登克橘子 murdunk orange | 灌木 安東尼卡咖啡豆 antonican coffee bean | 灌木 * 發(fā)光的花 glowing flower

rhatany：豆科灌木; 豆科灌木之根 (名)

rhapsody 敘事詩, 狂喜, 狂文 (名) | rhatany 豆科灌木; 豆科灌木之根 (名) | rhathymia 無憂無慮; 安樂的心理 (名)

semishrub：[植]小灌木,亞灌木

hypercylinder 超柱, 超柱面, 超柱體 | semishrub [植]小灌木,亞灌木 | eugranitic 花崗巖狀

shrubbery：灌木/灌木林

shrub /矮樹/灌木/于果汁內(nèi)摻入砂糖和酒的一種飲料/ | shrubbery /灌木/灌木林/ | shrubby /灌木的/灌木一般的/灌木繁茂的/

suffrutex：亞灌木;半灌木

充分性 sufficiency | 亞灌木;半灌木 suffrutex | 似亞灌木的 suffruticulose

fruticose：灌木的;似灌木的;(地衣之)直立而分枝的

"(景天屬的)拉景天亞屬","Fruticisedum" | "灌木的;似灌木的;(地衣之)直立而分枝的","fruticose" | "莖狀地衣;灌木狀地衣","fruticose lichen"

fruticose lichen：莖狀地衣;灌木狀地衣

"灌木的;似灌木的;(地衣之)直立而分枝的","fruticose" | "莖狀地衣;灌木狀地衣","fruticose lichen" | "灌木的","fruticosus"

fruticulose：近於灌木的;矮灌木性的

"灌木的","fruticosus" | "近於灌木的;矮灌木性的","fruticulose" | "小灌木","fruticulus"