沙丘組 的英文怎麼說
中文拼音 [shāqiūzǔ]
沙丘組
英文
dune formation-
Pukapuka - also known as danger island - is the most isolated atoll in the cooks group, and comprises three islets and a sandbank 1150km northwest of rarotonga
也叫危險島? ?是庫克群島中最孤立的一個島嶼,由三個小島和一座沙丘組成,距離拉羅湯加島1150公里。The save the dunes council of northwest indiana is one of the oldest grassroots conservation organizations in us
描述:西北印第安那拯救沙丘委員會是美國最早的民間保護組織之一。The soil physical composition, organic matter, total nitrogen, total phosphorus, total potassium and ph of salix psammophila ccheckerboard and contrast sand of dalate county were investigated in 2005, the effects of salix psammophila checkerboard on physical and chemical characteristics of sandy soil were analyzed
摘要本試驗於2005年在達拉特旗測定了設置沙柳沙障的沙丘和對照樣地(未設沙障)的土壤機械組成、有機質、全氮、全磷、全鉀、酸堿度等理化指標,對比分析沙柳沙障對土壤理化性質的影響。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。Root distribution and canopy structure parameters of s. godejevii in different sandy land habitats ( semi - fixed sand dunes, fixed sand dunes and inter - dunes low land ), as well as species composition and their frequency in the herb layer of the scrubs, were compared the results were as follows : the population hi the semi - fixed sand dunes had the most developed root systems, followed by he population in the fixed sand dunes, and that hi the inter - dunes low land was the last
為了更有效地利用這一重要植物資源,本文對分佈於渾善達克沙地三種不同沙地生境(半固定沙丘、固定沙丘、丘間低地)黃柳灌叢的根系分佈,冠層特徵進行了研究,同時測定了灌叢下草本層植物種類組成及頻度,結果表明:半固定沙丘上的黃柳根系最發達(根系分佈深,數量大) ,固定沙丘的黃柳明顯不及前者,而丘間低地的黃柳根系最不發達。By investigating and analyzing typical watershed on gully and rolling loess region, and gullied loess plateau, the paper preliminarily defines the measure and combination of comprehensive harnessing ways of soil and conservation
摘要通過對黃土高塬多沙粗沙區涉及較多的黃土丘陵溝壑區和黃土高塬溝壑區幾條典型小流域和現有治理模式的調查分析,初步確定了多沙粗沙區兩個主要侵蝕類型區的水土保持措施組合方案。分享友人