CAJ | 학술논문

选择民勤境内4种主要荒漠植物群落,从生境条件和生态位2个方面进行了对比研究.结果表明:1)沙蒿Artemisia arenaria、白刺Nitraria tangutorum、麻黄Ephedra przewalskii和梭梭Haloxylon ammodendron 4种群落的土壤机械组成差异主要表现在＞0.05 mm的土壤颗粒上,沙蒿和麻黄0.25～1.00 mm的粗砂均较多,麻黄土壤中≥1.0 mm的石砾含量最多,白刺土壤中0.05～0.25 mm的细砂粒最多,梭梭林地的全氮含量普遍高于其他3种群落;2)群落中优势种的生态位宽度最大,在4个优势种中,梭梭的生态位宽度最大,其次是麻黄,白刺的生态位宽度最小;3)沙蒿、沙米Agriophyllum squarrosum、沙拐枣的生境条件大致相同,五星蒿Bassia dasyphylla、沙米、盐生草Halogeton arachnoideus与白刺的生境条件大致相同,盐生草、刺蓬Salsola ikonnikovii、白刺、沙米与梭梭生境相近,泡泡刺与麻黄的生境相近.
선택민근경내4충주요황막식물군락,종생경조건화생태위2개방면진행료대비연구.결과표명:1)사호Artemisia arenaria、백자Nitraria tangutorum、마황Ephedra przewalskii화사사Haloxylon ammodendron 4충군락적토양궤계조성차이주요표현재＞0.05 mm적토양과립상,사호화마황0.25～1.00 mm적조사균교다,마황토양중≥1.0 mm적석력함량최다,백자토양중0.05～0.25 mm적세사립최다,사사임지적전담함량보편고우기타3충군락;2)군락중우세충적생태위관도최대,재4개우세충중,사사적생태위관도최대,기차시마황,백자적생태위관도최소;3)사호、사미Agriophyllum squarrosum、사괴조적생경조건대치상동,오성호Bassia dasyphylla、사미、염생초Halogeton arachnoideus여백자적생경조건대치상동,염생초、자봉Salsola ikonnikovii、백자、사미여사사생경상근,포포자여마황적생경상근.
The study selected 4 kinds of main eremophytes communities in Minqin and conducted comparative research in terms of habitat and niche. The results indicated that 1)differences of soil composition mainly demonstrated in >0.05 mm soil particle of 4 kinds of communities such as Artemisia arenaria, Nitraria tangutorum, Ephedra przewalskii and Haloxylon ammodendron. 0.25~1.00 mm coarse sand were rich in A. arenaria and E. przewalskii communities, ≥1.0 mm gravel was dominant in E. przewalskii soil, 0.05～0.25 mm fine sand were the most in N. tangutorum soil. Total Nitrogen content was higher in H. ammodendron than other 3 communities. 2) The niche breadth of the dominant species was the biggest in the community, the niche breadth of H. ammodendron was the biggest, followed by E. przewalskii, N. tangutorum had the smallest. 3) The habitat conditions of A. arenaria and A. squarrosum and Calligonum ongolicum were approximately the same, Bassia dasyphylla, Agriophyllum squarrosum, Halogeton arachnoideus and N. tangutorum had similar habitat, and the habitat conditions were close in N. sphaerocarpa and E. przewalskii.