1. Gao-Lin W.U.Wei L.I. Ling-Ping Z. and Zhi-Hua S. 2011. Artificial Management Improves Soil Moisture, C, N and P in an Alpine Sandy Meadow of Western China. Soil Science Society of China, 21 (3): 407-412. 2. Leps, J and Smilauer, P. 2005. Multivariate Analysis of Ecological Data using CANOCO. Cambridge University Press. UK, 269 Pp. 3. Martin L.M. Moloney K.A. and Wilsey B.J. 2005. An assessment of grassland restoration success using species diversity components. Journal of Applied Ecology, 42: 327-336. 4. Mc Cann, K. S., 2000. The diversity-stability debate, Nature, 405: 228-233. 5. Mekuria, W., Veldkamp, E., Haile, M., Nyssen, J., Muys, B., & Gebrehiwot, K., 2007. Effectiveness of exclosures to restore degraded soils as a result of overgrazing in Tigray, Ethiopia. Journal of Arid Environments 69:270–284. 6. Razavi, S. M. 2011. Chemical composition and some allelopathic aspects of essential oils of (Prangos ferulacea L.) Lindl at different stages of growth. Journal of Agricultural Science and Technology, 14(2): 349-356. 7. Vogat, K.A., Gordon, J.G., Wargo, j.P., Vogt, D.J., Asbjornsen, H., Palmiotto, P.A., Clark, H.J., Ohara, J.L., Keeton, W.S., Weynand, T.P., & Witten, E. 1997. Ecosystems: Balancing science with management. New York. 470. 8. Wilson, S.D., & Tilman, D. 2002. Quadratic variation in old-field species richness a long gradient of disturbance and nitrogen. Journal of Ecology. 83: 492-504. 9. Zhang, J.-T., 2005. Succession analysis of plant communities in abandoned croplandsin the Eastern Loess Plateau of China. J. Arid Environ. 63 (2), 458–474.
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