北方农牧交错带土地利用类型对土壤养分分布的影响

应用生态学报 ›› 2005, Vol. 16 ›› Issue (10): 1849-1852.

北方农牧交错带土地利用类型对土壤养分分布的影响

刘全友, 童依平

中国科学院生态环境研究中心, 北京 100085

收稿日期:2004-11-30 修回日期:2005-04-08 出版日期:2005-10-15 发布日期:2005-10-15
通讯作者: 刘全友,男,1950年7月生,副研究员.主要从事环境地球化学与农业生态研究,发表论文60余篇.E-mail:QYLiu@mail.rcees.ac.cn
基金资助:
国家自然科学基金资助项目(40173034).

Effects of land use type on soil nutrient distribution in northern agro-pasture ecotone

LIU Quanyou, TONG Yiping

Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

Received:2004-11-30 Revised:2005-04-08 Online:2005-10-15 Published:2005-10-15

摘要/Abstract

摘要： 对北方农牧交错带多伦县5种土地利用类型进行118个土壤样点分析表明,农田土壤养分含量最低,草地含量处中等,林地含量最高.分别对4种不同土地利用类型在4种＞15.坡的小流域进行布点采样,研究不同土地利用结构对土壤有机质、速效磷、速效氮和全氮的影响.结果表明,在垂直方向上,由坡底到坡中到坡顶,对应的耕地-草地-林地土壤养分要比对应草地-林地-耕地这一土地利用类型中土壤营养元素含量高出1倍左右,说明此种土地利用类型具有较好的土壤养分保持能力,从而优化出最适合当地的土地利用类型,为改善生态环境、提高当地经济效益提供科学依据.

关键词: 北方农牧交错带, 土地利用结构, 土壤养分, 土壤侵蚀

Abstract: Soil samples under five land use types were collected from Duolun County in the northern agro-pasture ecotone.Chemical analysis showed that soil nutrient content was the lowest in farmland,medium in grassland,and the highest in woodland,indicating that reclamation accelerated the decomposition of soil organic matter and the further loss of soil nutrients.To investigate the effects of land use type on soil organic matter,available phosphors,available nitrogen and total nitrogen,soils from four different land use types in the catchments with slopes steeper than 15? were sampled and analyzed.Vertically,the content of soil nutrients from slope bottom to its top was two times higher in land use type cropland-grassland-woodland than in grassland-woodland-cropland.Such a difference indicated the positive effects of the former land use type on soil nutrient retention.Therefore,selecting this optimal land use type in studied area could improve local eco-environment and economic benefits.

Key words: Northern agro-pasture ecotone, Land use type, Soil nutrient, Soil erosion

中图分类号:

Q142.3

刘全友, 童依平. 北方农牧交错带土地利用类型对土壤养分分布的影响[J]. 应用生态学报, 2005, 16(10): 1849-1852.

LIU Quanyou, TONG Yiping . Effects of land use type on soil nutrient distribution in northern agro-pasture ecotone[J]. Chinese Journal of Applied Ecology, 2005, 16(10): 1849-1852.

参考文献

[1] Aguilar R, Kelly EF, Heil RD. 1988. Effects of cultivation on soils in northern Great Plains rangeland. Soil Sci Soc Am J, 52:1081～1085
[2] Bai Y-F(白永飞),Xu Z-X(许志信).2002.On the small scale spatial heterogeneity of soil moisture, carbon and nitrogen in stipa communities of the Inner Mongolia Plateau. Acta Ecol Sin (生态学报), 22(8): 1215～1223(in Chinese)
[3] Chapin FS, Tom MS, Tateno M. 1996. Principles of ecosystem sustainability. Amer Nat, 148:1016～1037
[4] Chen G-S(陈广生),Zeng D-H(曾德慧),Chen F-S(陈伏生), et al. 2003. A research review on "fertile islands" of soils under shrub canopy in arid and semi-arid regions. Chin J Appl Ecol (应用生态学报), 14 (12): 2295～2300 (in Chinese)
[5] Chen F-S(陈伏生),Zeng D-H(曾德慧),Chen G-S(陈广生), et al. 2003. Comparative analysis on spatial patterns of soil moisture under different land use types in Keerqin sandy land. Chin J Ecol (生态学杂志), 22(6) :43～48(in Chinese)
[6] Chen F-S(陈伏生),Zeng D-H(曾德慧),Chen G-S(陈广生).2004. Effect of land use change on spatial distribution pattern of soil total nitrogen in Keerqin sandy land. Chin J Appl Ecol(应用生态学报), 15 (6): 953～957 (in Chinese)
[7] Ettershank GJ, Ettershank MB, Whitford WG. 1978. Effects of nitrogen fertilization on primary productivity in a Chihuahuan Desert ecosystems. J Arid Environ, 1:131～139
[8] Fu BJ, Gulinck H, Masum MZ. 1994. Loess erosion in relation to land use changes in the Ganspoel Catchment, Central Belgium.Land Degrad Rehabilit, 55 (4): 261～270
[9] Fu B-J(傅伯杰). 1995. The spatial pattern analysis of agricultural landscape in the Loess area. Acta Ecol Sin(生态学报), 15(2):113～120(in Chinese)
[10] Fu B-J(傅伯杰), Chen L-D(陈利顶). 1996. Landscape diversity types and their ecological significance. Acta Geogr Sin (地理学报), 51 (5): 454～462 (in Chinese)
[11] Fu B-J(傅伯杰), Chen L-D(陈利顶), Ma K-M(马克明). 1999.The effect of land use change on the regional environment in the Yangjuangou catchment in the Loess Plateau of China. Acta Geogr Sin (地理学报), 54(3) :241～246(in Chinese)
[12] Han X-G(韩兴国), Li L-H(李凌浩), Huang J-H(黄建辉). 1999.An Introduction to Biogeochemistry. Beijing: China Higher Education Press. 197～244(in Chinese)
[13] Jiang F-Q(姜凤岐),Cao C-Y(曹成有),Zeng D-H(曾德慧), et al. 2002. Degradation and Restoration of Ecosystems on Keerqin Sandy Land. Beijing: China Forestry Press. (in Chinese)
[14] Liu Q-Y(刘全友), Tong Y-P(童依平), Li J-Y(李继云), et al.2000. Factors influencing the availability of nutrients in the soil of Duolun County in mixed area of agriculture and pasturing. Acta Ecol Sin (生态学报), 20(6): 1034～1037(in Chinese)
[15] Ludwig JA, Whitford WG, Cornelius JM. 1989. Effects of water,nitrogen and sulfur amendments on cover, density and size of Chihuahuan desert ephemerals. J Arid Environ, 16:35～42
[16] Mooney HA, Vitousek PV, Matson PA. 1987. Exchange of materials between terrestrial ecosystems and the atmosphere. Science,238: 926～932
[17] McConnell SG, Quinn ML. 1988. Soil productivity of four land use systems in southeastern Montana. Soil Sci Soc Am J, 52: 500～506
[18] Robertson GP. 1987. Geostatistics in ecology: Interpolating with known variance. Ecology, 68: 744～748
[19] Tamm CO. 1992. Nitrogen in Terrestrial Ecosystems: Questions of Productivity, Vegeational Changes, and Ecosystem Stability. Ecological Studies 81. Berlin: Springer-Verlag.
[20] Vans RD, Ehleringer JR. 1993. A break in the nitrogen cycle of aridlands: Evidence from 15N of soils. Oecologia, 94:314～317
[21] West NE, Klemendson JO. 1978. Structural distribution of nitrogen in desert ecosystems. In: West NE, Skujins JJ, eds. Nitrogen in Desert Ecosystems. Hardcover:van Nostrand Reinhold. 1～16
[22] Zhang X-C(张兴昌), Shso M-A(邵明安), Huang Z-B(黄占斌),et al. 2000. An experimental research on soil erosion and nitrogen loss under different vegetation cover. Acta Ecol Sin (生态学报), 20(6): 1038～1044(in Chinese)