The main aim of the present study was to address: 1 the photosynthetic characteristics and the biomass allocation traits of spring ephemerals and 2 the relationship between these traits and unique growth pattern of these spring ephemerals. Methods in vim photosynthetic traits of 16 spring ephemerals at their growth stages were measured by an open gas-exchange measurement system (Li-6400) and biomass allocation patterns were measured in seven species.

該文運(yùn)用Li-6400開放式氣體交換光合作用測定系統(tǒng)，對分布于準(zhǔn)噶爾荒漠的16種早春短命植物生長盛期的凈光合速率P(下標(biāo) n、蒸騰速率T(下標(biāo) r、水分利用效率等特征進(jìn)行了測定，并對其中7種植物與生長相關(guān)的生物量分配特征進(jìn)行了分析亚洲午夜精品视频。

The diversity of epiphytes, biomass and ecosystem-level function have received more attention in the world. In the present paper, the main investigating methods of canopy research are summarized. Meanwhile, based on our own observations, the application advantage and disadvantage of each method, and newly progress in this field were discussed.

文中以附生植物多樣性、生物量和附生植物群落的生態(tài)功能等為基礎(chǔ)高清在线午夜日韩视频观看，結(jié)合作者已開展的工作九一人人操人人摸，綜述了林冠附生植物的觀測調(diào)查及取樣方法，并且分析了不同方法的特點(diǎn)及在林冠研究中的應(yīng)用欧美vs一级片，對進(jìn)一步深入研究附生植物提出了一些建議中文字幕精品一区二区日本。

Biodiversity and biomass of epiphytes and their functional roles at the ecosystem-level are becoming a hot topic of recent study.

有關(guān)林冠附生植物多樣性、生物量及其生態(tài)學(xué)效應(yīng)已成為近年來國際上新興研究領(lǐng)域―&林冠學(xué)&的研究熱點(diǎn)之一尤物在线无码视频观看网址。

Changes of Plant Diversity, Biomass, and Soil Nutrients in Cutting Slash of Artificial sand-fixation Forest after Fallowing and Natural Restoration

固沙林采伐跡地撂荒后自然恢復(fù)的植物多樣性女优网址、生物量與土壤養(yǎng)分含量的變化，吳祥云欧美日韩国内；盧慧青草视频免费；王曉嬌-66文免費(fèi)論文庫，大學(xué)生論文庫

The technology needed to effectively commercialize biomass as an energy feedstock is still in its infancy.

有效地將生物量商業(yè)化為一種能源原料所需要的技術(shù)仍然處于初級階段国产亚洲精品ⅴa在线观看。

Through CTV, we also are assessing a variety of biomass sources to identify potential feedstocks that could be available on a commercial scale.

通過CTV国产色清，我們估計(jì)有大量的生物量資源識別潛在的給料，而這也使規(guī)模的使用它成為可能亚洲一区免费视频。

The macrobenthos are an important constituent in the estuarine and tidal flat ecosystem that play a key role in the cycling of nutrient in the ecosystem.

因此作爱超A级黄色视频，氨氮的再生對維持長江河口濱岸潮灘生態(tài)系統(tǒng)的高生產(chǎn)力和高生物量具有重要的生態(tài)意義。

The biomass of reed community in bank of yellow river was greater than that in flood control dam, while the later is greater than that in shoal.

不同生境中蘆葦群落的生物量表現(xiàn)為：生長在黃河河道的大于生長在防洪壩以內(nèi)大于生長在灘涂上的亚洲国产一区二区三区。

Vegetative agriculture is one of agricultural production systems with the main aim of harvesting vegetative organs or tissues of plant such as herbages of forage crops, green fodders, vegetables and ornamental plants.

發(fā)展?fàn)I養(yǎng)體農(nóng)業(yè)可以發(fā)揮植物生長的各方面優(yōu)勢欧美爱性真人在线视，充分利用植物的邏輯斯蒂生長規(guī)律，對光照強(qiáng)度的要求不高8×8x永久华人免费网址入口，對氣候和土地資源的時間匹配性要求不嚴(yán)啪啪啪试看乱码，能夠減少漏光現(xiàn)象，提高光能利用率国产午夜精品理论免费视频，容易避開主要病蟲的危害网站大全色网站，其生物量和經(jīng)濟(jì)產(chǎn)量較高，營養(yǎng)價值好大路色视频，生產(chǎn)潛力大人人人色人人在线视频。

Mowing reduces the above ground biomass and density of community, reduces fine grass percentage in the community, increases forbs and leads habitat worsen.

割草使群落地上生物量和密度下降，優(yōu)良牧草在群落中的比例減少。av免费网站，雜類草增加www.99riav.1vip，并引起生境條件惡化。