摘要
通过盐池北部６个乡沙漠化土地综合治理，对林业治理技术措施，进行分析总结，提出生态经济型固沙林体系建设。其内容包括生态经济型固沙林体系含义，沙漠化土地类型划分及其治理生态型，将沙漠化土地划分成４个利用型、１９个类型及其相应的治理生态型。并提出生态经济型固沙林和灌草型饲料林的营造、管护、利用和更新等配套技术。
The sand fixation forest system of ecology economy type, based on the characters of climate, surface relief, landform, site type, land utilization and the condition of social economy, rationally distributes forest type and plant species, and is a multi storied as well as multi purpose biological community with stable biology; also is a synthesis of man made ecosystem with high benefits of ecology, social, and economy. The bases of selecting ecology economy type sand fixation plant species are that: living in the sand, easy to breed, fastly growing, resistant to wind erosion and sand covering, large shrub, strong sand controlling ability, high biological productivity, high yield of fodder and fuelwood, livestocks like to eat, combustible, high utilization ratio of forage, strong shoot ability, keep living under overgrazing, resistant to drought and poor condition, stable growth and long life. The rule of disposing species is that species keep suitable to local conditions. Their forms are decided by site type of forestation. Planting techniques are moving dry sand, deep planting 40￣60 cm in wet sand and then recovering with dry sand. To change the close sand fixation forest to the open, the utilization of it should be season rotation grazing and regular rotation grazing (2￣3 years interval). Site types suitable for fodder forest of shrub grass type are flooded sandy land, rocky land, thin sand coverd hill slop, and sand coverd ridge land. The species are Caragana intermedia and Kuang et Hu.C.Fu., and the favorable density is 1 200￣1 350 plant/hm 2 which is not only good for the growth of shrub, but also for herb, and then hightens the whole biomass of grass land. Soil is tillaged for one or two times before planting, deep ploughed to down 30 cm, and planted in the Spring. Directed seeding forestation should be practised in the rainy season. Reqular rejuvenation must be done, and the suitable stump time is in the last ten day period of March in sand area. Stump period was decided by the biol
出处
《中国沙漠》
CSCD
北大核心
1999年第1期51-55,共5页
Journal of Desert Research
关键词
固沙林体系
生态经济型
复壮更新
沙化土地防治
Sand fixation forest system\ Ecology economy type\ Establishment\ Rejuvenation
