Influence of climatic and edaphic factors on the distribution of Eragrostis lehmanniana Nees in Arizona, USA.
Influence of climatic and edaphic factors on the distribution of Eragrostis lehmanniana Nees in Arizona, USA.
复制标题
气候和土壤因素对美国亚利桑那州画眉草分布的影响。
DOI：
10.1080/02566702.1986.9648027
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发表时间：
1986
影响因子：
1.4
通讯作者：
G. Ruyle
中科院分区：
文献类型：
--
作者：
J. R. Cox;G. Ruyle
摘要 画眉草 (Eragrostis lehmanniana Nees) 于 1932 年从南非引入美国亚利桑那州，此后在美国西南部和墨西哥北部种植。该物种在亚利桑那州东南部得到了很好的适应，已播种面积超过 69,115 公顷，并通过种子传播到另外 76,040 公顷。莱曼爱情草占主导地位并蔓延的地区，表层土壤为沙质，夏季降雨量大于或等于 200 毫米，冬季气温很少低于 0°C。在亚利桑那州东南部，导致莱曼爱情草蔓延的因素包括火灾、放牧和干旱。
Abstract Lehmann lovegrass (Eragrostis lehmanniana Nees) was introduced into Arizona, USA, from South Africa in 1932 and has since been sown throughout the southwestern USA and Northern Mexico. The species is well adapted in southeastern Arizona where it has been sown on over 69 115 ha and has spread by seed to an additional 76 040 ha. Where Lehmann lovegrass predominates and spreads, surface soils are sandy, summer rainfall is greater than or equal to 200 mm and winter temperatures rarely fall below 0° C. Factors contributing to the spread of Lehmann lovegrass in southeastern Arizona include fire, cattle grazing and drought.