The major factors which hinder the sustainable management of Chinese fir plantation include not only the vulnerable subtropical red soil ecosystem which Chinese fir grow in, but also the unitary community structure and the biological characteristic of this artificial forest community. Additionally, the traditional culture system of Chinese fir including controlled burning lead to the degradation of soil ferti-lity.

影響杉木人工林可持續(xù)經(jīng)營的因素是多方面的亚洲精品性爱视频，主要和杉木人工林所處亞熱帶紅壤區(qū)生態(tài)系統(tǒng)的脆弱性和杉木人工林群落的單一性及杉木生物學(xué)特性等有關(guān)视频91自拍，而傳統(tǒng)杉木林培育過程中采取一系列傳統(tǒng)的營林措施則加劇了林地地力衰退亚洲啪啪网站。

The island is home to 350 ethnic Malays, the descendants of the original plantation workers.

這個島上住了350位馬來族人欧美www视频在线观看，全部都是當(dāng)初來此地開墾栽種的勞工后裔。

The results showed that the species richness,the speciesdiversity and its biomass of understorey vegetation decreased with the stand age in-creasing.There was the most significant negative-linear relationship between thiskind of changes and age.It is possible that the certain shading condition may benefit to understorey growing better.The richness,diversity index and biomass of thevegetation in eucalypt plantation decreased with CPR increasing,however,after ro-tating by watermelon one rotation,the richness,the diversity index and biomass ofunderstorey in CP stand increased,this result will provide the possibility of therestoration and reestablishment of vegetation in eucalypt plantations.The nutrientstorage of understorey decreased in accord with the productivity decreased withCPR increasing,this is the result which the stand enviroment became worse and thestand stratum competed with the vegetation for the water and fertility of soil.

結(jié)果表明国产情侣短片AV在线，隨著年齡的增長，桉樹林下植被物種豐富度降低一级一级毛片毛片，多樣性減少免费一级A片男女牲交无遮挡，生物量下降，這種變化趨勢與年齡存在極顯著的負線性關(guān)系狼人狠狠干；隨著造林密度的增加物種豐富度降低亚洲国模大胆私拍久久av，多樣性也下降，但林下植被生物量尚有增加精品国产欧美在线观看不卡，可能是一定程度的庇蔭有利于桉樹林下植被的生長日韩图片自拍视频在线播放；隨連栽代次的增加，桉樹林下植被豐富度降低亚洲一区二区国产精品一区二区，多樣性指數(shù)下降免费在线免费在线看a片，生物量減少；但在輪作一茬西瓜后的林地美女裸体露双乳黄a免费网站，物種豐富度提高欧美视频专区一，多樣性指數(shù)升高，生物量增加欧美暴力性爱，為桉樹林下植被的恢復(fù)與重建提供了可能性免费一级A级高清毛片人妻；隨連栽代次增加精品免费人成视频网站app，林下植被養(yǎng)分總量逐代下降，與生產(chǎn)力下降一致自拍av在线，這是林分環(huán)境惡化后上層喬木和林下植被對水肥競爭的結(jié)果91一区二区日本在线观看www。

His father's carriage house in Charleston, South Carolina, and his nearby plantation were in the line of Sherman's march.

他父親的馬車房在南卡羅來納州的查爾斯頓，他種植的莊稼則在謝爾曼將軍的行軍路線上欧美操逼视频网站免费看。

His sugar plantation brought him reasonable wealth, and he found himself among the best society of Bridgetown on the island of Barbados .

他的糖料種植園給他帶來可觀的財富日韩女性黄色性视频，令他立身于巴巴多斯島并成為布里奇頓上流社會的一員。

Saguenay lost the "one team with ships" thing. Now each player gets a random econ building: Mill, Plantation, Market or Pen (everyone in the game gets the same thing, but it varies game to game).

沙格奈河（一直不是喜歡大兵團人們的最愛）丟掉了&一個團隊有船&的特性日韩在线观看网红自拍视频，現(xiàn)在每個玩家都有一個隨機的經(jīng)濟建筑：磨坊成年人在线网站、農(nóng)場、市場或者牲畜圈（每個游戲中的玩家都有同樣的東西亚洲美女你懂的，但每局游戲都不同）福利在线看。

In Recife, a group of 40 slaves rebelled against their master, killed all the white employees, and burned the plantation house.

在海息飛，一個40名奴隸組成的團體反叛了他們的奴隸主人人操人人干干人人操人人，殺死了所有的白人雇員强伦姧人妻一区二区，還放火燒了種植園的房舍。

The range of architectural designs in Tennessee is astonishing to the newcomer, including as it always does, Plantation Style, Federal, Greek Revival, Traditional, Farmhouse, Contemporary, Ranch, and so others.

在建筑設(shè)計的范圍是驚人的田納西新人毛片一级AB毛片一级，包括一向人工林風(fēng)格聯(lián)邦国产女秘书免费视频、希臘復(fù)興傳統(tǒng)農(nóng)舍、當(dāng)代国产h视频在线观看免费、牧場等別人偷拍无码日韩丝袜视频。

The 51-yr-old Japanese cedar Cryptomeria japonica (L. f. D. Don plantation forest in Taiping mountain area was selected as the monitoring site for forest thinning experiment.

本研究以太平山區(qū)51年生柳杉人工林作為疏伐試驗監(jiān)測樣區(qū)，探討不同疏伐度(分為對照組0%亚洲国产综合无码一区、25%在线无码免费网站、28%、30%WWW.97人人操.COM、33%国产精品免费午夜在线a、37%、38%及53%疏伐度)對枯落物分解及土壤養(yǎng)分釋放的影響欧美午夜操b视频。

At which time, amongst other recreations, we exercised our arms, many of the Indians coming amongst us, and among the rest their greatest King Massasoit, with some ninety men, whom for three days we entertained and feasted, and they went out and killed five deer, which they brought to the plantation and bestowed on our governor, and upon the captain and others.

那時欧美一级做一级a做一级，在其他消遣中，我們鍛煉我們的雙臂黄色的网站在线视频，因為在我們當(dāng)中很多印度人都會來久久激情日韩精品视频。在我們休息的期間，他們偉大的君主Massasoitaⅴ876视频，帶著大概90個人來臨了国产www77爽777，而這些人就是我們款待了三天的。他們到外面殺了五只鹿A片视频免费观看在线，他們帶那五只鹿回了農(nóng)場贈與我們當(dāng)?shù)氐慕y(tǒng)治者等人黄片黄片黄片黄片黄片黄片黄片黄片黄片。