Relative abundance of trees was positively correlated with soil organic matter and the distance to old-growth forest, which had the highest distribution in the secondary forest stands.

喬木的相對多度與土壤有機質(zhì)和離老齡林的距離成正相關(guān)夜夜狠狠青草伊人中文字幕，在采伐后恢復的山地雨林次生林中的分布最高偷拍精品一区。

In the space of 30 years the old-growth chestnut forest in North America lost every specimen of a species -- the mighty chestnut -- that formerly constituted a significant hunk of the forest's mass.

在30年的生長中，北美的板栗林失去了物種——高大的栗樹——的每個標本飘花电影院午夜伦天堂，這是以前板栗林中非常重要的一塊欧美偷拍性爱小视频。

Liu Yanshui, with his keen technical skill and savvy, places the landscape imagery of the ancients in the contemporary cultural context in order to conduct dialogue in a different space, just like a modern day person narrating for another a story of ancient times. Clouds Go, Clouds Come; Secluded Valley Scene; Picture of Jade Tree on Mountain; Peaceful Mountain Forest Scene; Brook and Mountain are Endless; Play in Forest Spring, Love of Lake and Mountain – these works are all like this.

劉彥水以靈敏的技術(shù)以及悟性，將古人的山水意象置於當下的文化語境中以便進行不同空間的對話，仿如一個現(xiàn)代人對另一個現(xiàn)代人講述著古老的故事欧美性爱三级在线观看，《云去云來》《幽谷圖》《湖山碧樹圖》《林巒清幽圖》《溪山無盡》《游林泉愛湖山》等等作品都是如此欧美在线高清。

Currently, there are 12 state-level scenic areas, including Huangguoshu Grand Waterfall, Dragon Palace, Hongfeng Lake, Zhijin Cave, etc; 6 state-level natural protection zones, including Mt.Fanjing, Maolan Karst Forest, Xianning Sea of Grass,etc; 19 state-level key culture protection relics, including the site of Zunyi Meeting; Anshun Fuwen Temple, etc; 7 state-level forest parks, including Sea of Bamboo, Mt.

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The soil nutrient content of spruce forest with small canopy density was lower, compared with that of spruce forest with great canopy density.

具體表現(xiàn)為郁閉度較大的云杉林立地土壤養(yǎng)分含量總體高于郁閉度小的云杉林。

The reclamation mode of Qidashan iron mine is combination of the forest, garden, shrub, grass and fishery, which can be concluded concisely as follows: the flat field as garden and forest, the convenient water and traffic as meadow, the sloping field as shrub and grass, the low land as fishing pool.

齊大山鐵礦廢棄地的復墾模式為林免费大片又粗又大在线播放、園影音先锋a片导航、灌、草久久XX久久免费视频、漁相結(jié)合av免费网页，可以精煉地概括為：平為園林，水利為牧黄色人成影院一级，坡為灌草精品福利99，低為漁塘。

Under the framework of sustainable development, this paper dealt with biodiverdity assessment for sustainable forest management in the Korean pine broadleaved forest region. An indirect assessment system and method was proposed.

本文以可持續(xù)發(fā)展為指導思想5月婷婷综合网，針對闊葉紅松林區(qū)森林可持續(xù)經(jīng)營中的生物多樣性保護問題美女99黄网免费视频，提出了一套生物多樣性間接評價的體系和評價方法。

The proportion of seedling in larger size washigher in ecotone than in broadleaved forest and coniferous forest.

華北落葉松林和闊葉林形成的交錯帶內(nèi)幼苗密度和幼苗豐富度略低于闊葉林东南亚黄色毛视频，卻明顯高于華北落葉松林800AV久久久凹凸精品。

The secondary popular and birch forest is the pioneer community after the Broadleaved Korean pine forest.

楊樹和樺樹都是生長速度快的強陽性樹種，闊葉紅松林一經(jīng)破壞人人超碰人人爽人人添，它們首先占據(jù)采伐和火燒跡地免费看乱伦毛片，迅速成林。

Soil conservation capacity of forest is an important part of forest ecosystem.

森林的保土功能是其生態(tài)功能的重要體現(xiàn)毛片网毛片官方网。