The objectives of the study were to: 1 reveal the responses of vegetation and soil to degradation by investigating community characteristics and soil physic-chemical properties; 2 quantify the contributions of human factors and natural factors and the relationship among the factors by analyzing the variation of each factor in past decades; 3 understand the succession of fenced undegraded meadow, artificial pasture, semi-artificial pasture and degraded meadow, and to 4 provide suggestions for restoration and rehabilitation of the degraded rangeland in the region.

本項研究旨在通過對黃河源區(qū)退化高寒草甸的植物群落特征和土壤特征調(diào)查毛片播放网站在线免费，揭示植物和土壤養(yǎng)分對土地退化的響應(yīng)3p性A片免费；對源區(qū)人口及牲畜數(shù)量和國內(nèi)生產(chǎn)總值，氣候變化特點等因子的分析日本永久网站在线观看，量化人為干擾因子和自然因子的貢獻率以及各因子之間的數(shù)量關(guān)系www.luanlunshipin；以及對草地退化驅(qū)動力分析以及原生草地植被封育、人工草地在线免费黄色国产剧情网址、半人工草地的自然演替變化規(guī)律的研究高清性色生活片老熟女，為高寒草甸退化草地恢復(fù)與重建提供科學(xué)依據(jù)男人天堂视频手机在线看。

Fleeing after Pharsalus, Pompey wouldn't have time to send a message otherwise Ptolemy's advisors undoubtably would of sent him away, being in the midst of a succession battle, the last thing they would want is scrutiny from Rome.

法薩盧會戰(zhàn)后，龐培沒時間告知自己的到來又大又粗一级毛片，否則托勒密的培臣毫無疑問會拒絕接納他国产无码黄片，畢竟在與克萊奧帕特拉的王位戰(zhàn)爭期間，招惹羅馬是最不明智的色色色热。

In this paper, based on the characters of the diversity of plants the effects of the flow-broken on the vegetational succession regularity in the region were analyzed.

根據(jù)三角洲植物多樣性的特點久久香蕉不卡毛片，分析了黃河斷流對三角洲森林旱田、普通草甸精品福利一区二区三区、鹽生植被先锋影音资源在线、濕生草甸植物多樣性的影響

From the frequently used way that applying probe vectors for choosing promoter to the using of PCR, there were lots of ways for promoter cloning. Afterwards, a series of techniques based on PCR for promoter cloning such as I-PCR, P-PCR, SSP-PCR, YADE, TAIL-PCR were developed in succession. They offered more reliable and reasonable ways of cloning the promoter.

著重介紹了啟動子克隆的方法，從常用的利用啟動子探針型載體篩選啟動子到PCR方法的應(yīng)用日日艹干日，及此后相繼出現(xiàn)的一些基于PCR法的克隆啟動子技術(shù)95视频高潮喷水，像I-PCR， P-PCR特黄男女交性A片激情视频三， SSP-PCR日韩瓯美一级a片网， YADE， TAIL-PCR等A片黄aaaAB，為克隆啟動子提供了更可靠免费看AAA级毛片，更合理的方法。

The result is in fruit ripe season, adjacent county uses the " of " inferior goods that urges fruit agent in succession with high price successful work off, and the yangtao with this county good quality is " instead desolate pommelled horse is rare before the door ".

基于保護市場的考慮国产迷在线，周至縣政府于去年投入大量的人力財力禁止果農(nóng)使用催果劑欧美A级拍拍拍高潮喷水。結(jié)果在果熟季節(jié)，鄰縣使用催果劑的&劣質(zhì)品&紛紛以高價順利售出激情漫画家庭婷婷，而該縣品質(zhì)優(yōu)良的獼猴桃反而是&門前冷落鞍馬稀&MSAV欧美在线播放。

The contract was signed, the paragraph also begins to arrive in succession Zhang, think 4.8 million yuan already are the YOK of the content in bursa, begin to taking wife to make a sightseeing tour.

合同簽了，款也開始陸續(xù)到賬黄色电影免费片日本大片，以為480萬元已是囊中之物的YOK黄色精品视频免费观看，開始帶著老婆游山玩水。

In order to evaluate the influence of zokor's consuming and excavating on pasture, the vegetation on zokor mounds was studied by index of grassland quality. The result indicates that,with the succession, the index of grassland quality increases strikingly.

為了評估鼢鼠覓食掘洞行為對草地牧草質(zhì)量的影響黄色视屏在线你懂的，采用草地質(zhì)量指數(shù)分析了鼢鼠土丘植被狀況美女黄色视频污污版网站，結(jié)果表明：隨著演替的進行，鼢鼠土丘草地質(zhì)量指數(shù)顯著增加xxxxx黄片在线免费观看。

Region industry economy is the child that region economy grows to be united in wedlock with mandarin orange of process of industrial structure succession, it is the only way that market economy grows certain level.

區(qū)域產(chǎn)業(yè)經(jīng)濟是地域經(jīng)濟成長與產(chǎn)業(yè)結(jié)構(gòu)演替進程柑結(jié)合的產(chǎn)物美女黄色h网站网址，是市場經(jīng)濟發(fā)展到一定階段的必由之路。

Along with forest succession, the percentage of C and N turnover through fine root to the root, soil and the belowground increases gradually and then decreases.

隨著演替的進行亚洲天堂日韩无码，細(xì)根每年周轉(zhuǎn)的碳午夜两性免费视频、氮量在根系、土壤和林地地下的碳亚洲小说区、氮貯量中所占比例為先增加后減小久久亚州黄色视频。

Along with forest succession, the percentage of C and N turnover through fine root to the root, soil and the belowground increases gradually and then decreases.

由高海拔到低海拔根系生物量逐漸增加国产黄色视频免费关看，而細(xì)根的生物量則沒有明顯的變化規(guī)律，細(xì)根占根系總生物量的范圍為11％～24％3p国产精品一区。