Abrams P.A. 1995. Monotonic or unimodal diversity-productivity gradients: what does competition theory predict? Ecology 76: 2019–2027.
Google Scholar
Aiba S. and Kitayama K. 1999. Structure, composition and species diversity in an altitude-substrate matrix of rain forest tree communities on Mount Kinabalu, Borneo. Plant Ecology 140: 139–157.
Google Scholar
Alard D. and Poudevigne I. 2000. Diversity patterns in grassland along a landscape gradient in northwestern France. Palmer, Journal of Vegetation Science 11: 287–294.
Google Scholar
Alard D., Bance J.F. and Frileux P.-N. 1994. Grassland vegetation as indicator of the main agro ecological factors in a rural landscape: consequences for biodiversity and wildlife conservation in Central Normandy (France). Journal of Environmental Management 42: 91–109.
Google Scholar
Balent G. and Stafford Smith D.M. 1991. Conceptual model for evaluating the consequences of management practices on the use of pastoral resources. In: Proceedings of the fourth International Rangeland Congress., Montpellier, France, pp. 1158–1164.
Barrera M.D., Frangi J.L., Richter L.L., Perdomo M.H. and Pinedo L.B. 2000. Structural and functional changes in Nothofagus pumilio forests along an altitudinal gradient in Tierra del Fuego, Argentina. Journal of Vegetation Science 11: 179–188.
Google Scholar
Bastow W.J., John B.S., Warren Mc G.K. and Habiba G. 1999. The effect of spatial scale on evenness. Journal of Vegetation Science 10: 463–468.
Google Scholar
Braakhekke W.G. and Hooftman A.P. 1999. The resource balance hypothesis of plant species diversity in grassland. Journal of Vegetation Science 10: 187–200.
Google Scholar
Brown J.H. 2001. Mammals on mountainsides: elevational patterns of diversity. Global Ecology & Biogeography 10: 101–109.
Google Scholar
Che K.J., Fu H.E. and He H.Y. 1994. A study on mechanism of water resource conservation of forest in north slope of Qilian mountains. In: Long term research on China's forest ecosystems. Northeast Forestry University Press, Haerbin, pp.280–287.
Google Scholar
Che K.J., Fu H.E. and Wang J.Y. 1998. Study on the structure and function of forest in Qilianshan Mountain. Scientia Silvae Sinicae. 34: 29–37.
Google Scholar
Chen Q.C. 1966. Observetions on the morphology and ecology of some apline plant in the eastern section of the northern Qilianshan mountain, Gansu, China. Chinese bullitin of plant ecology and geo-botany. Beijing: Science Press, Beijing, (in Chinese).
Google Scholar
Chen Q.C. and Zhou G.Y. 1957. General features of the vegetation in the middle and lower Shule River, Gansu, China. Chinese bulletin of plant ecology and geo-botany. Beijing: Science Press, Beijing, (in Chinese).
Google Scholar
Cody M.L. 1991. Niche theory and plant growth form. Vegetatio 97: 39–55.
Google Scholar
DeBano L.F. and Schmidt L.J. 1990. Potential for enhancing riparian habitats in the southwestern United States with watershed practices. Forest Ecology and Management 33/34: 385–403.
Google Scholar
Diaz S. and Cabido M. 1997. Plant functional types and ecosystem function in relation to global change. Journal of Vegetation Science 8: 463–473.
Google Scholar
Fu H.E. 1990. Preliminary study on the function of forest in the northern slope of Qilianshan Mountain. Journal of Lanzhou University 26: 17–28.
Google Scholar
Fu H.E. 1994. Preliminary studies on relation among climatic changes, water resources and forests in Qilian mountains. In: Long term research on China's forest ecosystems. Northeast Forestry University Press, Haerbin, pp. 288–291.
Google Scholar
Galan de Mera A., Hagen M.A. and Vicente Orellana J.A. 1999.Aerophyte, a new life form in Raunkiaer's classification? Journal of Vegetation Science 10: 65–68.
Google Scholar
Greig-Smith P. 1983. Quantitative Plant Ecology. In: Anderson J.A., Greig-Smith P. and Pitelka F.A. (eds), Studies in Ecology. 3rd edn. Blackwell Scientific Publications.
Grime J.P. 1979. Plant strategies and vegetation processes. John Wiley and Sons, Chichester.
Google Scholar
He H.Y., Che K.J., Fu H.E. and Zhang X.L. 1994. A preliminary study on water and soil erosion in Sidalong forest region, Qilian mountains, China. In: Long term research on China's forest ecosystems. Northeast Forestry University Press, Haerbin, pp. 300–309.
Google Scholar
Heaney L.R. 2001. Small mammal diversity along elevational gradients in the Philippines: an assessment of patterns and hypotheses. Global Ecology and Biogeography 10: 15–39.
Google Scholar
Hu R.D. and He Y.H. 1958. The natural landscape of Hexi corridor, Gansu, China. Journal of Lanzhou University 1: 24–30.
Google Scholar
Huang D.S. 1996. Gansu vegetation. Gansu scientific and technological Press, Lanzhou, (in Chinese).
Google Scholar
Huang J.H., Gao X.M., Ma K.P. and Chen L.Z. 1997. A comparative study on species diversity in zonal forest communities. Acta Ecologica Sinica 17: 611–618.
Google Scholar
Huston M.A. 1994. Biological diversity: the coexistence of species on changing landscapes. Cambridge University Press, New York.
Google Scholar
Kang X.C. 1992. Probe into the climate change over the historical period. Quarterly of the Institute of Lanzhou Glacial and Frozen Soil, CAS. Vol. 7. Science Press, Beijing, (in Chinese) Pp. 54–63.
Google Scholar
Kassen R., Buckling A., Bell G. and Rainey P.B. 2000. Diversity peaks at intermediate productivity in a laboratory microcosm. Nature 406: 508–512.
Google Scholar
Kitayama K. 1992. An altitudinal transect study of the vegetation on Mount Kinabalu, Borneo. Vegetatio 102: 149–171.
Google Scholar
Lande R. 1982. A quantitative genetic theory of life history evolution. Ecology 63: 607–615.
Google Scholar
Lieberman D., Lieberman M., Peralta R. and Hartshorn G. 1996. Tropical forest structure and composition on a large-scale altitudinal gradient in Costa Rica. Journal of Ecology 84: 137–152.
Google Scholar
Liu Y.X. 1982. Study on the origin of desert flora from China. Acta Phtytotaxonnomica Sinica 20: 131–141.
Google Scholar
Liu C.H. and Song G.P. 1992. The prediction and change trend of glacial in Qilianshan Mountain. Quarterly of the Institute of Lanzhou Glacial and Frozen Soil, CAS. Vol. 7. Science Press, Beijing, Pp. 1–9. (in Chinese).
Google Scholar
Lomolino M.V. 2001. Elevarion gradients of species-density: historical and prospective views. Global Ecology & Biogeography 10: 3–13.
Google Scholar
Mabry C., Ackerly D. and Gerhardt F. 2000. Landscape and species-level distribution of morphological and life history traits in a temperate woodland flora. Journal of Vegetation Science 11: 213–224.
Google Scholar
Marrs R.H., Proctor J., Heaney A. and Mountfied M.D. 1988. Changes in soils, nitroten mineralization and nitrification salong an altitudinal transect in tropical rain forest in Coata Rica. Journal of Ecology 76: 466–482.
Google Scholar
Martin D., Odd E., Eli F., Jonas E.L. and Erik A. 1999. Beech forest communities in the Nordic countries-a multivariate analysis. Plant Ecology 140: 203–220.
Google Scholar
Maximowicz C.J. 1889. Flora Tangutica. Typis Academiae Imperialis Scientiarum Petropolitanae, Petropoli.
Md. Nor S. 2001. Elevational diversity patterns of small mammals on Mount Kinabalu, Sabaha, Malaysia. Global Ecology and Biogeography 10: 41–62.
Google Scholar
Moore D.R.J. and Keddy P.A. 1989. The relationship between species richness and standing crop in wetland: the importance of scale. Vegetatio 79: 99–106.
Google Scholar
Noble I.R. and Gitay H. 1996. A functional classification for predicting the dynamics of landscapes. Journal of Vegetation Science 7: 329–336.
Google Scholar
Palmer M.W. 1992. The coexistence of species in fractal landscapes. American Naturalist 139: 375–397.
Google Scholar
Pausas J.G. 1994. Species richness patterns in the understorey of Pyrenean Pinus sylvestris forest. Journal of Vegetation Science 5: 517–524.
Google Scholar
Pausas J.G. and Austin M.K. 2001. Patterns of plant species richness in relation to different environments: An appraisal. Journal of Vegetation Science 12: 153–166.
Google Scholar
Pendry C.A. and Proctor J. 1996. The causes of altitudinal zonation of rain forests on Bukit Belalong, Brunei. Journal of Ecology 84: 407–418.
Google Scholar
Rey Benayas J.M. 1995. Patterns of diversity in the strata of boreal forest in British Columbia. Journal of Vegetation Science 6: 95–98.
Google Scholar
Rickart E.A. 2001. Elevational diversity gradients, biogeography, and the structure of montane mammal communities in the intermountain region of North America. Global Ecology and Biogeography 10: 77–100.
Google Scholar
Stevens G.C. 1992. The elevational gradient in altitudinal range: an extension of Rapoport's latitudinal rule to altitude. American Naturalist 140: 893–911.
Google Scholar
Szaro R.C. 1989. Riparian forest and scrubland community types of Aricona and New Mexico. Desert Plants 9: 69–138.
Google Scholar
Teng S.C. 1947. The forest regions of Kansu and their ecological aspects. Botanica Bulletin Academica Sinica 1: 187–200.
Google Scholar
ter Braak C.J.F. 1990. CANOCO-A FORTRAN program for canonical community ordination by (partial) (detrended) (canonical) correspondence analysis, principal components analysis and redundancy analysis (update notes version 3.1). TNO Institute of Applied Computer Science, Wageningen.
Google Scholar
Vazquez García J.A. and Givnish T.J. 1998. Altitudinal gradient in tropical forest composition. Structure, and diversity in the Sierra de Manantlan. Journal of Ecology 86: 999–1020.
Google Scholar
Walker B.H. 1992. Biodiversity and ecological redundancy. Conservation Biology 6: 18–23.
Google Scholar
Wang G.H. and Lian Y.S. 1997. An analysis on the flora and geography of gymnosperm from Gansu province. Acta Botanica Boreali-Occidentalia Sinica 17: 399–404.
Google Scholar
Wang G.H., Che K.J. and Wang J.Y. 1995. A study on the flora of the northern slope of Qilianshan mountain. Journal of Gansu Agricultural University 30: 249–255.
Google Scholar
Wang G.H., Ren J.Z. and Zhang Z.H. 2001. A study on the population diversity of plant community in Hexi mountain-oasisdesert area. I. General features. Acta Prataculturae Sinicae 10: 1–11.
Google Scholar
Wei K.Q. 1990. The conservation of forest in the northern slope of Qilianshan Mountain. Journal of Lanzhou University 26: 2–8.
Google Scholar
Weiher E. 1999. The combined effects of scale and productivity on species richness. Journal of Ecology 87: 1005–1011.
Google Scholar
Whittaker R.H. 1972. Evolution of measurement of species diversity. Taxon 21: 213–251.
Google Scholar
Wu Z.Y. 1980. China vegetation. Science Press., Beijing, (in Chinese).
Google Scholar
Xu H.G., Wang S.Q. and Xue D.Y. 1999. Biodiversity conservation in China: legislation, plans and measures. Biodiversity and Conservation 8: 819–837.
Google Scholar
Yang Z.L. 1992. Water equilibrium and resource in the drainage area of Heihe river. Quarterly of the Institute of Lanzhou Glacial and Frozen Soil, CAS. Vol. 7. Science Press, Beijing, (in Chinese), Pp.133–147.
Google Scholar
Zhang Y.J. and Li M.S. 1958. A survey on the saline plant in the north-west of China. Journal of Lanchou University 1: 4–24.
Google Scholar
Zimmerman J.C., DeWald L.E. and Rowlands P.G. 1999. Vegetation diversity in an interconnected ephemeral riparian system of north-central Arizona, USA. Biological Conservation 90: 217–228.
Google Scholar