| 生物土壤与生态 |
|
|
|
|
| Characteristics of Soil Seed Bank along Desertification Gradient in Lower Reaches of Tarim River |
| WANG Zeng-ru1,2, XU Hai-liang1, YIN Lin-ke1, LI Ji-mei1, ZHANG Zhan-jiang3, LI Yuan1 |
| 1.Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 2.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 3.Agronomy College of Xinjiang Agriculture University, Urumqi 830052, China |
|
|
|
|
Abstract Over the past 50 years the desert riparian vegetation in the lower reaches of the Tarim River in western China degraded due to irrational management regimes. Little is known about the effect of vegetation degradation level on the structure and performance of soil seed bank in desert riparian vegetation. A field experiment was established to test this effect. The results showed that the density (892.6 seeds\5m-2) and species number(11 species) of soil seed banks in the moderate-desertification transects are relatively high. With the increase of desertification level the species abundance, density and biodiversity index of soil seed bank decrease. There is no significant effect of desertification intensity on the vertical density distribution of soil seed bank. However, over 70% of seeds were concentrated in the upper oil layer (0~2 cm). Plots at extreme desertification level showed a greater proportion of annual herbs compared to plots at heavy or moderate desertification levels, whereas perennial herbs and shrubs followed the inverse trend. These results indicate that the potential of the natural vegetation to restore naturally decreases with the increase of desertification level.
|
|
Received: 22 April 2008
Published: 07 September 2009
|
|
|
[1]Roberts H A.Seed banks in the soils[C]//Advances in Applied Biology.London:Academic Press,1981:1-55.
[2]李秋艳,赵文智.干旱区土壤种子库的研究进展[J].地球科学进展,2005,20(3):350-358.
[3]Pake C E,Venable D L.Seed banks in desert annuals:Implications for persistence and coexistence in variable environments[J].Ecology,1996,77(5):1427-1435.
[4]Bakker J P,Poschlod P,Strykstra R J,et al.Seed banks and seed dispersal:Important topics in restoration ecology[J].Acta Botanica Neerlandica,1996,45(4):461-490.
[5]Holmes P M,Cowling R M.Diversity,composition and guild structure relationships between soil-stored seed banks and mature vegetation in alien plant-invaded South African fynbos shrublands[J].Plant Ecology,1997,133(1):107-122.
[6]赵文智,白四明.科尔沁沙地围封草地种子库特征[J].中国沙漠,2001,21(2):204-208.
[7]赵哈林,苏永中,张华,等.灌丛对流动沙地土壤特性和草本植物的影响[J].中国沙漠,2007,27(3):385-390.
[8]Wang S M,Zhang X,Li Y,et al.Spatial distribution patterns of the soil seed bank of Stipagrostis pennata (Trin.) de Winter in the Gurbantonggut Desert of North-west China[J].Journal of Arid Environments,2005,63(1):203-222.
[9]Asselin H,Fortin M J,Bergeron Y.Spatial distribution of late-successional coniferous species regeneration following disturbance in southwestern Quebec boreal forest[J].Forest Ecology and Management,2001,140(1):29-37.
[10]Steinhardt T,Selig U.Spatial distribution patterns and relationship between recent vegetation and diaspore bank of a brackish coastal lagoon on the southern Baltic Sea[J].Estuarine Coastal and Shelf Science,2007,74(1-2):205-214.
[11]Thompson K,Band S R,Hodgson J G.Seed size and shape predict persistence in soil[J].Functional Ecology,1993,7(2):236-241.
[12]苏延桂,李新荣,张景光,等.生物土壤结皮对土壤种子库的影响[J].中国沙漠,2006,26(6):997-1001.
[13]Bakker J P,Berendse F.Constraints in the restoration of ecological diversity in grassland and heathland communities[J].Trends in Ecology & Evolution,1999,14(2):63-68.
[14]Satterthwaite W H,Holl K D,Hayes G F,et al.Seed banks in plant conservation:Case study of Santa Cruz tarplant restoration[J].Biological Conservation,2007,135(1):57-66.
[15]Vecrin M P,Grevilliot F,Muller S.The contribution of persistent soil seed banks and flooding to the restoration of alluvial meadows[J].Journal for Nature Conservation,2007,15(1):59-69.
[16]Lopez R P,Valdivia S.The importance of shrub cover for four cactus species differing in growth form in an Andean semi-desert[J].Journal of Vegetation Science,2007,18(2):263-270.
[17]Banerjee M J,Gerhart V J,Glenn E P.Native plant regeneration on abandoned desert farmland:Effects of irrigation,soil preparation,and amendments on seedling establishment[J].Restoration Ecology,2006,14(3):339-348.
[18]Li F R,Zhao L Y,Zhao X Y,et al.The relative importance of pre-and post-germination determinants for recruitment of an annual plant community on moving sandy land[J].Annals of Botany,2005,96(7):1182-1191.
[19]赵丽娅,李锋瑞,王先之.草地沙化过程地上植被与土壤种子库变化特征[J].生态学报,2003,23(9):1745-1756.
[20]赵丽娅,李兆华,赵锦慧,等.科尔沁沙质草地放牧和围封条件下的土壤种子库[J].植物生态学报,2006,30(4):617-623.
[21]Feng Q,Liu W,Si J H,et al.Environmental effects of water resource development and use in the Tarim River basin of Northwestern China[J].Environmental Geology,2005,48(2):202-210.
[22]杨玉海,陈亚宁,李卫红.塔里木河下游土壤特性及荒漠化程度研究[J].水土保持学报,2007,21(1):44-49.
[23]孙永强,王德忠,尹林克,等.塔里木河下游环境退化的因子分析[J].中国水土保持科学,2005(03):22-26.
[24]张金屯.数量生态学[M].北京:科学出版社,2004:87-92.
[25]Nicol J,Muston S,Santos P,et al.Impact of sheep grazing on the soil seed bank of a managed ephemeral wetland:implications for management[J].Australian Journal of Botany,2007,55(2):103-109.
[26]Kinloch J E,Friedel M H.Soil seed reserves in arid grazing lands of central Australia.Part 1:Seed bank and vegetation dynamics[J].Journal of Arid Environments,2005,60(1):133-161.
[27]Kinloch J E,Friedel M H.Soil seed reserves in arid grazing lands of central Australia.Part 2:availability of ‘safe sites’[J].Journal of Arid Environments,2005,60(1):163-185.
[28]詹学明,李凌浩,李鑫,等.放牧和围封条件下克氏针茅草原土壤种子库的比较[J].植物生态学报,2005,29(5):747-752.
[29]赵丽娅,李兆华,李锋瑞,等.科尔沁沙地植被恢复演替进程中群落土壤种子库研究[J].生态学报,2005,25(12):3204-3211.
[30]Leck M A,Simpson R L.Ten-year seed bank and vegetation dynamics of a tidal freshwater marsh[J].American Journal of Botany,1995,82(12):1547-1557.
[31]Liu Z G,Zhu J J,Yuan X L,et al.On seed rain and soil seed bank of Larix olgensis in montane regions of eastern Liaoning Province,China[J].Acta Ecologica Sinica,2007,27(2):579-587.
[32]Uesugi R,Nishihiro J,Tsumura Y,et al.Restoration of genetic diversity from soil seed banks in a threatened aquatic plant,Nymphoides peltata[J].Conservation Genetics,2007,8(1):111-121.
[33]Johnson E A.Buried seed populations in the subarctic forest east of Great Slave Lake,northwest territories[J].Canadian Journal of Botany,1975,53:2933-2941.
[34]Vandervalk A G,Davis C B.The role of seed banks in the vegetation dynamics of prairie glacial marshes[J].Ecology,1978,59:322-335.
[35]Richter R,Stromberg J C.Soil seed banks of two montane riparian areas:Implications for restoration[J].Biodiversity and Conservation,2005,14(4):993-1016.
[36]Satterthwaite W H,Holl K D,Hayes G F,et al.Seed banks in plant conservation:Case study of Santa Cruz tarplant restoration[J].Biological Conservation,2007,135(1):57-66.
[37]Piper J K,Schmidt E S,Janzen A J.Effects of species richness on resident and target species components in a prairie restoration[J].Restoration Ecology,2007,15(2):189-198.
[38]Augusto L,Dupouey J L,Picard J F,et al.Potential contribution of the seed bank in coniferous plantations to the restoration of native deciduous forest vegetation[J].Acta Oecologica-international Journal of Ecology,2001,22(2):87-98. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2009, Vol. 29 
