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| DOI：10.13522/j.cnki.ggps.2021572 |
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| Analysis of Cause of Degradation Shelterbelt and Suggestions for Restoration in Mu Us Sandy Land |
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XIAO Jianming, SHI Changchun, WEI Daowei, CHANG Miaomiao, FU Bin, GUAN Lifeng
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1.Yulin Forestry Research Institute, Yulin 719000, China; 2.Shaanxi Academy of Forestry Sciences, Yulin 719000, China;
3. Yuyang Forestry Seedling Station, Yulin 719000, China
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| Abstract: |
| 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 |
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