黄河首曲沙化草地恢复重建模式研究

通过对青草沙障、草方格 山生柳Salix oritrepha密植扦插 种草、羊粪生物结皮 种草、卵石方格 种草、遮荫网 种草、山生柳密植扦插6种草地恢复重建模式研究,结果表明:效果由大到小依次为草方格 山生柳密植扦插 种草模式、羊粪生物结皮 种草促进恢复重建模式、卵石方格 种草模式、遮荫网 种草模式、青草沙障、山生柳密植扦插模式。草方格 山生柳密植扦插 种草模式,山生柳插穗成活率为92.3%,保存率为83.1%,平均生长量为12.4 cm,平均草高12 cm,覆盖度为78%,此模式值得推广。羊粪生物结皮 种草模式,各种草平均生长量为5.3 cm,覆盖度为43%~48%,是玛曲沙化草地最有前途的恢复重建模式之一,山生柳密植扦插效果最差,此模式难以推广。

Study on restoration pattern of degraded grassland in First Tune of Yellow River

Six patterns of degraded grassland restoration were studied,including grass barrier,straw pane Salix oritrepha forage planting, sheep dung biological crust forage planting,pebble pane forage planting,overshadowing net forage planting,and S.oritrepha cuttings.The result showed that the second pattern was the most effective;the living percentage and survival rate of S.oritrepha cutting was 92.3%and 83.1%,with 12.4 cm average growth and 78%coverage,and was valuable for extension.The third pattern gave 5.3 average growth and 43%-48% coverage.The last pattern was the most ineffective.