本文選題：高寒沙區(qū) + 植被類型��； 參考：《土壤通報(bào)》2016年01期

【摘要】：以沙珠玉治沙試驗(yàn)林場(chǎng)內(nèi)人工植被恢復(fù)的長(zhǎng)期定位監(jiān)測(cè)為基礎(chǔ),通過分析30 a生的6個(gè)植被類型區(qū)(青楊、檸條、烏柳、沙棘、檉柳、賴草)以及2個(gè)對(duì)照區(qū)(農(nóng)田、流動(dòng)沙區(qū))0~30 cm土壤機(jī)械組成、p H值、有機(jī)質(zhì)及主要養(yǎng)分等理化性質(zhì)指標(biāo),明確了高寒沙區(qū)不同植被類型對(duì)土壤改良的效果差異。結(jié)果表明:(1)各類型區(qū)在植被恢復(fù)30 a后,土壤質(zhì)地得到極大改良,土壤養(yǎng)分含量顯著提高(P0.05),但表層土壤的p H變異性較小,0~5 cm表層土壤的恢復(fù)效果明顯好于5~30 cm層;(2)植被對(duì)土壤改良順序?yàn)闄帡l青楊沙棘賴草烏柳檉柳;(3)檸條和沙棘林適宜在高寒沙區(qū)推廣種植,并且可以采取適當(dāng)撫育管理措施,以實(shí)現(xiàn)高寒沙區(qū)林場(chǎng)的可持續(xù)發(fā)展。
[Abstract]:Based on the long-term monitoring of artificial vegetation restoration in Shazhouyu sand control forest farm, six vegetation types (Populus korshinskii, Caragana korshinskii, Salix korshinskii, Hippophae rhamnoides, Tamarix chinensis, Leymus chinensis) and two control areas (farmland) were analyzed. The physical and chemical properties of soil mechanical composition (pH), organic matter and main nutrients in 30 cm soil in mobile sand area were determined, and the effects of different vegetation types on soil improvement in alpine sand region were determined. The results showed that: (1) after vegetation restoration for 30 years, the soil texture was greatly improved. The soil nutrient content was significantly increased (P0.05), but the soil pH variability of surface soil was significantly better than that of 5cm soil layer (P 0.05). (2) the order of vegetation to soil improvement was Caragana korshinskii, Hippophae rhamnoides and Tamarix chinensis; (3) Caragana korshinskii and Sands. The spinous forest is suitable for planting in alpine and sandy areas. In order to realize the sustainable development of forest farm in alpine sand area, appropriate tending and management measures can be taken.
【作者單位】： 中國林業(yè)科學(xué)研究院荒漠化研究所;
【基金】：國家“十二五”科技支撐課題(2012BAD16B0105)資助
【分類號(hào)】：S156
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本文編號(hào)：2102808