Rain-fed Recovery of Degenerated Artificial Haloxylon ammodendron Population in Minqin
Based on the experiment of population renewal, dwarf stumping and forest crust reform of artificial Haloxylon ammodendron population in Minqin, the key technical measures were investigated for rain-fed recovery of degenerated artificial H. ammodendron population . The results indicated that the population renewal of artificial H. ammodendron population at the semi-fixed sand dune and sandy progressed well, in which the average density of renewal seeding was 1 130～2 280 plants·hm~(-2), but the preserving rate of annual seeding was very low, ranging from 20.6% to 53.3%, effected mainly by the rainfall and wind-erosion. Full-stumping significantly promoted the growth of sprout and shooting, with the annual average height of 58.9 mm, average new-branch length 27.0 cm and average number of second branch 16.9, which were 1.1, 1.6 and 1.3 times of half-stumping. Hole-shape damage of H. ammodendron forest crust could accelerated rainfall water infiltration with the infiltration depth of 70 cm, on the other hand, zonal and flake damage of on the crust could produce interception to rainfall with the infiltration depths of 50～70 cm.
国家科技期刊平台
NSTL
万方数据
维普
