中国农学通报
中國農學通報
중국농학통보
CHINESE AGRICULTURAL SCIENCE BULLETIN
2013年
22期
62-66
,共5页
沙葱种群%生态特征%荒漠区%种群结构%空间分布格局
沙蔥種群%生態特徵%荒漠區%種群結構%空間分佈格跼
사총충군%생태특정%황막구%충군결구%공간분포격국
Allium mongolicum populations%ecological characteristics%desert area%population structure%spatial distribution pattern
为了弄清民勤荒漠区沙葱种群的生态特性,更好地保存和合理开发利用其种质资源,通过实地调查的方法,利用植物生态学种群理论,在民勤沙葱种群分布区,选取有代表性的野生沙葱种群为研究对象,进行沙葱群落的生境特征、种群构成和数量特征、种群空间分布格局的研究,分析了民勤沙葱分布区的土壤类型、土壤养分和盐分、并对沙葱的种群结构和空间分布格局进行研究。结果表明:民勤沙葱不同分布区,土壤类型有灰棕漠土和风沙土2类;土壤均较瘠薄,且均为碱性土壤。民勤沙葱种群构成相对简单,共10科21属25种。从植被地理成分看,主要是典型的戈壁荒漠和草原化荒漠区系植物占优势,还有部分古地中海成分和荒漠特有种构成。在空间分布格局上,民勤大部分分布区均为均匀分布,只有少部分为随机分布。
為瞭弄清民勤荒漠區沙蔥種群的生態特性,更好地保存和閤理開髮利用其種質資源,通過實地調查的方法,利用植物生態學種群理論,在民勤沙蔥種群分佈區,選取有代錶性的野生沙蔥種群為研究對象,進行沙蔥群落的生境特徵、種群構成和數量特徵、種群空間分佈格跼的研究,分析瞭民勤沙蔥分佈區的土壤類型、土壤養分和鹽分、併對沙蔥的種群結構和空間分佈格跼進行研究。結果錶明:民勤沙蔥不同分佈區,土壤類型有灰棕漠土和風沙土2類;土壤均較瘠薄,且均為堿性土壤。民勤沙蔥種群構成相對簡單,共10科21屬25種。從植被地理成分看,主要是典型的戈壁荒漠和草原化荒漠區繫植物佔優勢,還有部分古地中海成分和荒漠特有種構成。在空間分佈格跼上,民勤大部分分佈區均為均勻分佈,隻有少部分為隨機分佈。
위료롱청민근황막구사총충군적생태특성,경호지보존화합리개발이용기충질자원,통과실지조사적방법,이용식물생태학충군이론,재민근사총충군분포구,선취유대표성적야생사총충군위연구대상,진행사총군락적생경특정、충군구성화수량특정、충군공간분포격국적연구,분석료민근사총분포구적토양류형、토양양분화염분、병대사총적충군결구화공간분포격국진행연구。결과표명:민근사총불동분포구,토양류형유회종막토화풍사토2류;토양균교척박,차균위감성토양。민근사총충군구성상대간단,공10과21속25충。종식피지리성분간,주요시전형적과벽황막화초원화황막구계식물점우세,환유부분고지중해성분화황막특유충구성。재공간분포격국상,민근대부분분포구균위균균분포,지유소부분위수궤분포。
In order to clarify the ecological characteristics of the Allium mongolicum populations in Minqin desert area, and better preserve and rationally develop and utilize the germplasm resources. Through field survey methods, using the theory of plant ecology populations, selecting the wild Allium mongolicum populations as the research object, the author carried on the study of Allium mongolicum’s characteristics, population composition, quality characteristics and population spatial distribution pattern, and analyzed the soil type, soil nutrients and salt of the distribution of Allium mongolicum in Minqin. The results showed that:in different distribution area, there were two kinds of soil, gray-brown desert soil and wind sand. Soils were relatively barren, and all for alkaline soil. The population structure of Allium mongolicum was relatively simple, in total of 10 families, 21 genera and 25 kinds. From the vegetation geographical elements, the dominant plants were typical gobi desert and grassland of the dessert plant, and part of the ancient Mediterranean ingredients and desert endemic constitute. On the spatial distribution pattern, most of Minqin area were uniformly distributed, only a small part of was random distribution.