platycladus 中文意思是什麼

In different phases of development, vegetation systems in this region have changed from pioneer herbage species initially recovering in abandoned cropping lands ( bothriochloa ischemum, artenmisia giradii and stipa bungeana, artenmisia sacrorum, spodiopogen sibiricus and sophora flavecens, themeda japonica, and arundinella anomala ) to secondary shrubs ( hippophae rhamnoides, sophora viciifdia, and ostryopsis davidiana ), early forest community ( populus davidiana, betula platyphylla and platycladus orientalis with arbors or shrub assembling ), and finally liaotungesis community as the mature forest. in this study, soil profiles ( 0 - 5, 5 - 15, 15 - 25, 25 - 35, 35 - 50 cm soil layers ) were selected from typical vegetation systems representing for vegetation successions in the region

該區北部目前還保存有空間上完整的植被正向演替系列，即棄耕地先鋒群落草本群落（白羊草bothriochloaischemum 、茭蒿artenmisiagiradii +長茅草stipabungeana 、鐵桿蒿artenmisiasacrorum 、大油芒spodiopogensibiricus +苦參sophoraflavecens 、黃菅草themedajaponica或野古草arundinellaanomala ）灌叢群落（沙棘hippophaerhamnoides 、狼牙刺sophoraviciifdia 、虎榛子ostryopsisdavidiana ）早期森林群落（喬灌群聚、山楊populusdavidiana 、白樺betulaplatyphylla 、側柏platycladusorientalis 、 ）遼東櫟群落（ quercusliaotungensis ） 。

Effects of fertilization methods on seedling growth and drought tolerance of platycladus orientalis under different water conditions

不同水分條件下施肥對側柏苗木生長及抗旱性的影響

The results show that compared to salix psammophila barrier, ecomat cover does decrease surface sand transportation rate ( sstr ), increase surface soil nutrient, and enhance growth of platycladus orientalia to the extent, undoubtedly ecomat is one of surface cover materials for sand - fixation and revegetation ; compared to two other ecomat part - cover types ( banded and chessboard ), the all - cover type can also decrease sstr, increase surface soil nutrient significantly, growth condition of platycladus orientalia, however, is not good as expected, which may attributes to lower infiltration rate of slight rainfall ; as for two part - cover types, chessboard type is better than banded type in increasing of sstr and enhancement of platycladus orientalia growth

研究結果表明，與沙柳沙障相比，生態墊確實可以降低近地表的輸沙率，提高生態墊下土壤的養分含量，一定程度上提高檸條的地徑和高度，可見生態墊是一種很好的促進流沙固定和植被恢復的地表覆蓋材料；與其它兩種生態墊鋪設方式（品字狀和帶狀）相比，全鋪可以顯著降低近地表的輸沙率，提高其下土壤的養分含量，但檸條的生長狀況卻略差，這可能與全鋪降低了小雨入滲的可能性有關；就兩種部分鋪設的方式而言，無論從降低近地表的輸沙率還是促進檸條的生長土來看，品字狀都明顯優于帶狀。

The results showed that the drought resistant capability decreased in order of tamarix ramosissima ldb., platycladus orientalis and sympegma regelii

結果表明， 3樹種抗旱性大小順序依次為：紅柳側柏合頭草。

Effect of drought stress on hydraulic architecture characteristics of pinus tabulaeformis and platycladus orientalis seedlings

乾旱脅迫對油松側柏苗木水力結構特徵的影響

Seed zones of chinese forest trees - seed zones of platycladus orientalis franco

中國林木種子區側柏種子區

Response of ring width and ring density of platycladus orientalis to climate change in beijing

側柏年輪寬度和年輪密度對氣候變化的響應

1. forests drought resistance the roots of pinus tabulaeformis, platycladus orientalis and robinia pseudoacacia were wrapped by plastic film, then the dry environment was made. the tests showed that the photosynthetic rate of p. orientalis was higher than that of p. tabulaeformis, but the transpiration was opposite. after one year of treating, photosynthetic rate of p. tabulaeformis reduced 55. 1 %, p

測定結果表明，在相同乾旱的條件下，側柏的凈光合速率始終大於油松，而蒸騰速率則相反，在乾旱脅迫的第2年，油松光合速率比第一年降低了55 . 1 ，側柏降低了45 . 6 ，刺槐降低了56 . 2 。