Xiao Jianming,Shi Changchun,Wei Daowei,et al.毛乌素沙地退化防护林成因分析与修复改造建议[J].灌溉排水学报,0,():-.
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肖建明1, 石长春2, 魏道伟1, 常苗苗1, 付斌1, 关利峰3
关键词:  退化防护林;修复改造;抚育;退化成因
Analysis of cause of degradation shelterbelt and suggestions for restoration in Mu Us Sandy Land
Xiao Jianming1, Shi Changchun2, Wei Daowei1, Chang Miaomiao1, Fu Bin1, Guan Lifeng3
1.Yulin Forestry Research Institute;2.Shaanxi Academy of Forestry Sciences;3.Yuyang Forestry Seedling Station
Significant achievements have been made in the management of Mu Us sandy land in Yulin, but the shelter forest in the sandy area has been degraded in a large area due to environmental and human factors. This paper investigates the causes of the degradation of shelter forest, and puts forward some suggestions for transformation. The degradation protection forest mainly includes artificial arbor forest and shrub forest. The lack of water resources and low soil fertility are the main causes of forest land degradation, and the physiological over maturity of forest stand, human disturbance and natural disasters are also important factors leading to degradation. By introducing evergreen tree species Pinus sylvestris var. mongolica and Sabina vulgaris, the degraded forest in the sandy area was transformed into a stable ecosystem with the combination of trees, shrubs and grasses, coniferous and broad-leaved mixture, which has both protective effect and economic benefit. The restoration and transformation of degraded protective forest should pay attention to all links from planting to later management and protection, and increase the tending strength, which can not only effectively prevent and repair the degraded forest stand, but also prevent the occurrence of diseases, pests and fires.
Key words:  Degraded Shelterbelt; Restoration and Transformation; Tending; Causes of Degradation