本文選題：克氏針茅草地 + 植物群落��； 參考：《草業(yè)科學(xué)》2014年04期

【摘要】：對(duì)錫林郭勒克氏針茅(Stipa krylovii)草原5個(gè)典型聚居區(qū)的放牧草地,在2003、2007和2010年的冬春季和夏秋季放牧地定期進(jìn)行植物群落調(diào)查。結(jié)果表明,圍欄放牧草地常見植物有60種,草地建群種克氏針茅和羊草(Leymus chinensis)的優(yōu)勢(shì)度在冬春季和夏秋季兩季草地中均保持遞增,而草地沙化退化指示種豬毛菜(Salsola collina)優(yōu)勢(shì)度始終遞減。隨著放牧草地內(nèi)牲畜平均占有草地面積的增加,克氏針茅、羊草等地帶性植物種的優(yōu)勢(shì)度迅速增大,豬毛菜的優(yōu)勢(shì)度迅速減小,至每個(gè)牲畜平均占有草地面積大于3.5hm2的3年后,豬毛菜退出草地植物群落的優(yōu)勢(shì)物種行列。錫林郭勒克氏針茅草原放牧草地植物群落的30年演替歷程與由政府主導(dǎo)的一系列草地歸屬權(quán)改革引發(fā)放牧方式的變更動(dòng)態(tài)相關(guān),同時(shí)短期演替過程與牲畜草地資源占有量相關(guān)。
[Abstract]:The herding grassland of Stipa krylovii (Stipa krylovii) steppe was investigated regularly in winter, spring and summer and autumn in 2003 / 2007 and 2010. The results showed that there were 60 species of common plants in fenced grazing grassland, and the dominance of Stipa krsinensis and Leymus chinensis were increased in winter, spring and summer and autumn. However, the dominance of Salsola Collina, an indicator of grassland desertification degradation, was always decreasing. With the increase of the average area occupied by livestock in grazing grassland, the dominant degree of zonal plant species such as Stipa krjabini and Leymus chinensis increased rapidly, and the dominance of porcine cabbage decreased rapidly, until the average area of grassland occupied by each animal was more than 3.5hm2 3 years later. Porcine leaves the dominant species of grassland plant community. The 30-year succession process of herding grassland community in Stipa Sinensis was related to the dynamic change of grazing mode caused by a series of grassland ownership reform led by the government, and the short-term succession process was related to the amount of livestock grassland resources.
【作者單位】： 內(nèi)蒙古師范大學(xué)地理科學(xué)學(xué)院;寧夏大學(xué)農(nóng)學(xué)院;
【基金】：內(nèi)蒙古自然科學(xué)基金資助重點(diǎn)項(xiàng)目(2009Zd10)
【分類號(hào)】：S812.8

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本文編號(hào)：1971896