科爾沁沙地植被恢復(fù)及其對(duì)土壤的改良效應(yīng)-資料下載頁
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【正文】 yme activities to monitor soil quality in natural and improved fallows in semiarid tropical regions[J]. Appied Soil Ecology, 2001, 18: 229238.[14] 章家恩, 劉文高, 胡剛. 不同土地利用方式下土壤微生物數(shù)量與土壤肥力的關(guān)系[J]. 土壤與環(huán)境, 2002, 11(2): 140143.Zhang Jiaen, Liu Wengao, Hu Gang. The relationship between quantity index of soil microorganisms and soil fertility of different land use systems [J]. Soil and Environment Sciences, 2002, 11(2): 140143.[15] 曹成有, 朱麗輝, 富瑤, 等. 科爾沁沙質(zhì)草地沙漠化過程中土壤生物活性的變化[J]. 生態(tài)學(xué)雜志, 2007, 26(5): 622627. Cao Chengyou, Zhu Lihui, Fu Yao, et al. Changes of soil biological activity in the process of desertification in Horqin Sandy Grassland[J]. Chinese Journal of Ecology, 2007, 26(5): 622627.Vegetation restoration and its effects on soil improvement in Horqin sandy landJiang Deming1, Cao Chengyou2, Li Xuehua1, Zhou Quanlai1,3, Li Ming1,31. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China。 2. College of Sciences, Northeastern University, Shenyang 110004, China。 3. Graduate School of Chinese Academy of Sciences, Beijing 100049, ChinaAbstracts: Horqin sandy land, located in the transition zone of Northeast plain and Inner Mongolian plateau, is the typical ecotone of farming and grazing in northeastern China. In this region, arid climate and unreasonable human activities leads to severe desertification, which is an important ecological problem in east region of Inner Mongolia. Here, we discussed the biological and engineering technologies that fixed the mobile and semimobile sand dunes. The responses of soil improvement to vegetation restoration in Horqin sandy land were also analysed. The results showed that: (1) Planting seeds of Caragana microphylla in m m size straw checkboards could achieve the better sandstablizing effect and the mobile sand dune could be fixed in 2 years. (2) The restoration effects of artificial sandfixed munity after enclosure would be showed in 2 or 3 years. (3) The soil nutrients of artifical sandfixed munity increased with the development of Caragana microphylla munity, the organic matter, available K, N, P and total N, P in soil depth (0~30 cm) showed the same tendency: fixed sand dune have been fixed for 11 years fixed sand dune have been fixed for 6 yearsmobile sand dune。 the building of artificial munity could improve the soil microbe biomass, and the content of microbe C, N, P increased with the development of caragana microphylla shrubs. Key words: mobile sand dune。 straw checkboard。 caragana microphylla。 enclosure。 artificial sandfixed munity。 vegetation restoration。 soil improvement。 Horqin sandy land
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