沙生群落 的英文怎麼說
中文拼音 [shāshēngqúnlà]
沙生群落
英文
psammon-
Effects of artificial sand - fixation communities on soil nutrients and biological properties in horqin sandy land
科爾沁沙地不同人工植物群落對土壤養分和生物活性的影響Compared with straw - barriers or wooden barriers, clay - barriers may well be in favor of the settlement of plant species at first, in the long run, however, they will hold back the development of leymus secalimus population, so that it will take much longer time for the plant community to restore to its climax stage
與草木沙障相比，粘土沙障設置初期可能有利於植物的定居；但是會對賴草種群的發育產生不良影響。所以，從長遠看來，粘土沙障不利於沙地植物群落的恢復。Biomass of agriophyllum squarrosum community and its function on mobile sand dune in horqin sandy land
科爾沁沙地流動沙丘沙米群落生物量特徵及其防風固沙作用The structures and dynamic changes of the artifical sand - fixing vegetation were studied based on the follow views : components of vegetation community, plant diversity, life - forms of vegetation, trends of plant growth, characteristics of the vertical and horizontal structure of vegetation, relationship between the vegetation community and environment ( including soil moisture temperature etc. ), relationship between the vegetation community and characteristics of plant physiological activities. some results were showed as follow : 1. components, diversity and life style of artificial vegetation in shapotou region the marked changes of artificial vegetation have taken place during more than 40 years, since the establishment of sand - fixing vegetation
本文以騰格里沙漠東南緣寧夏中衛縣沙坡頭地區人工固沙植被作為研究對象，採用傳統生態學的野外調查方法，從植被群落的組成、多樣性、生活型、群落生長動態、垂直結構特徵、水平結構特徵、群落結構與周圍環境（土壤含水量、溫度）相互關系及其與植物自身生理生態適應特徵關系等多個角度研究了人工植被群落的結構及其動態變化，取得了如下研究結果： 1 、植被群落組成、多樣性及生活型：沙坡頭地區人工植被經過近50年的演變，從流動沙丘到固定沙地，沙地植被的動態變化經歷了從人工植被到人工?自然植被的轉變，從人工植被建立初期的少數幾種引種植物到現有30多種植物，隨著固定沙地時間的延長，植物種類日趨豐富，並且人工植被在15 25年、 40 50年兩個階段，物種的周轉速率最大，即群落結構變化最大。Special seed germination and seedling survival mechanism in artemisia ordosica, eragrostis poaeoides and bassia dasyphylla ensured the maintenance and replacement of their populations in accordance with local environmental conditions. at o ld artificial vegetation of shapotou area, c. korshinskii is expected to disappear in the future of 50 years or so
沙坡頭人工固沙區植被隨時間推進，老固沙區中的檸條種群將在50年或稍長的時間內消失，形成以油蒿種群為主，花棒種群為輔的多年生群落。Study on biodiversity of protozoa community in the lagoons of shaying in autumn and in winter
沙營氧化塘秋冬季原生動物群落多樣性變化的研究In original and jamming slightly vegetation, because dead roots, branch and leaves back to soil, soil organic matter higher, soil available phosphorus higher, too ; chemical and physical characters of soil were stabilization. the reason were original vegetation have more species and structure of community was stable. the degradation of fertility and structure of soil in secondary vegetation was influenced by change with structure and form of community
在人為干擾小的原生性森林，植物種類豐富，群落結構穩定，植物死根系和枯枝落葉全部回歸土壤，土壤有機質含量高，養分呈有機態為多，故有效磷較高，土壤理化性質較穩定；次生植被群落土壤結構和肥力的退化是由於群落組成和結構的改變導致枯枝落葉成分和土壤發規白山地還小問沙消民俗一非定俗地征王卿喬忡旺w比收財育環境差異而引起，次生植被土壤的退化狀態隨植被退化程度不同而有差異。Woods, hill streams, mangroves, intertidal mudflats, sandy shores, rocky shores and coral communities and vivid photographic records of a rich array of flora and fauna in hong kong. glossary and game card hard and soft copies
11張全彩色，圖文並茂的展板，闡述香港自然環境的變化，內容包括介紹高地灌叢風水林河溪紅樹林潮澗帶泥灘沙灘巖岸及珊瑚群落等生態環境。Gradually, with the more and more transpiration of the vegetation, and with the reduction of the deep soil moisture, in the end, a kind of balance of soil moisture will appeared and be kept for ever between the precipitation and the transpiration of vegetation, and the manual sand - fixing vegetation will be transformed consequently into its natural climax stage completely, in which the dominant plant is leymus secalimus, and in which the plant species richness is not too low, but the plant species evenness is the lowest
設置機械沙障和生物沙障的初期，植物的物種豐富度、物種均勻度會有一個暫時的提高；但是在人工固沙植被的發育盛期，物種豐富度會降低；隨植物群落蒸騰耗水量的不斷增大，人工植被不斷地衰退，最後發展到賴草土壤頂極群落，此時的物種豐富度並不低，但是物種均勻度很低。分享友人