Xie G D, Lu C X, Leng Y F, et al . Ecological assets valuation of the Tibetan Plateau. Journal of Natural Resource, 2003, 18(2): 189-196.
[2]
Zhong X H, Liu S Z, Wang X D, et al . A research on the protection and construction of the state ecological safe shelter zone on the Tibetan Plateau. Journal of Mountain Science, 2006, 24(2): 129-136.
[3]
Wang J B, Zhang D G, Cao G M, et al . Regional characteristics of the alpine meadow degradation succession on the Qinghai-Tibetan Plateau. Acta Prataculturae Sinica, 2013, 22(2): 1-10.
[4]
Liu X Y, Wang W. Evaluation of rangeland ecosystem sustainability of the Northern Tibetan Region,China. Journal of Natural Science, 2013, 28(7): 1209-1220.
[5]
Li Y Y, Dong S K, Li X Y, et al . Effect of enclosure on vegetation photosynthesis and biomass of degraded grasslands in headwater area of Qinghai-Tibetan Plateau. Acta Agrestia Sinica, 2012, 20(4): 622-625.
[6]
Liu X M, Nie X M. Effects of enclosure on the quantitative characteristics of alpine vegetation. Pratacultural Science, 2012, 29(1): 112-116.
[7]
Miao F H, Guo Y J, Miao P F, et al . Influence of enclosure on community characteristics of alpine meadow in the Northeastern edge region of the Qinghai-Tibetan Plateau. Acta Prataculturae Sinica, 2012, 21(3): 11-16.
[8]
Li C, Zhai G Q, Xu F, et al . Resources in grassland of Northern Tibet and its evolutionary trend- a case study of the Zainza area. Geological Bulletin of China, 2003, 22(11): 991-998.
[9]
Wang J S, Zhang X Z, Zhao Y P, et al . Spatio-temporal pattern of climate changes in Northern Tibet’s Qiangtang Plateau. Resources Science, 2008, 30(12): 1852-1858.
[10]
Huang C Y. Soil Science[M]. Beijing: China Agriculture Press, 2000: 98-118.
[11]
Ma K P, Liu Y M. Methods of measuring community diversity. Chinese Biodiversity, 1994, 2(4): 231-239.
[12]
Cheng J M, Zou H Y, Akio H. Effects of protective growing cutting and grazing on the vegetation of grassland. Research of Soil and Water Conservation, 1998, 5(1): 36-54.
[13]
Wang Z W, Xing F, Zhu T C, et al . The responses of functional group composition and species diversity of Leymus chinese grassland to flooding disturbance on Songnen Plain, Northern China. Acta Phytoecologica Sinica, 2002, 26(6): 708-716.
[14]
Bai Y F, Chen Z Z. Effects of long-term variability of plant species and functional groups on stability of a Leymus chinensis community in the Xilin River Basin, Inner Mongolia. Acta Phytoecologica Sinica, 2000, 24(6): 641-647.
[15]
Hector A, Schmid B, Beierkuhnlein C, et al . Plant diversity and productivity experiments in European grasslands. Science, 1999, 286: 1123-1127.
[16]
Li W H, Zhao X Q, Zhang X Z, et al . Change mechanism in main ecosystems and its effect of carbon source/sink function on the Qinghai-Tibetan Plateau. Chinese Journal of Nature, 2013, 35(3): 172-178.
[17]
Shao Q Q, Liu J Y, Huang L, et al . Integrated assessment on the effectiveness of ecological conservation in Sanjiangyuan National Nature Reserve. Geographical Research, 2013, 32(9): 1645-1656.
[18]
Liu J Y, Shao Q Q, Fan J W. Ecological construction achievements assessment and its revelation of ecological project in Three Rivers Headwaters Region. Chinese Journal of Nature, 2013, 35(1): 40-46.
[19]
Li F R, Zhao L Y, Wang S F, et al . Effects of enclosure management on the structure of soil seed bank and standingvegetation in degraded sandy grasslands of eastern Inner Mongolia. Acta Prataculturae Sinica, 2003, 12(4): 90-99.
[20]
Ma Y S, Lang B N, Wang Q J. Review and prospect of the study on ‘Black Soil Type’ deteriorated grassland. Pratacultural Science, 1999, 16(2): 5-9.
[21]
Zhou H K, Zhou L, Zhao X Q, et al . Degradation process and integrated treatment of “black soil beach” grassland in the source regions of Yangtze and Yellow Rivers. Chinese Journal of Ecology, 2003, 22(5): 51-55.
[22]
Liu G, Zhang K B, Li R, et al . Studies on the management of the enclosed pasture-Taking Yanchi county of Ningxia as an example. Research of Soil and Water Conservation, 2007, 14(2): 252-254.
[23]
Meissner R A, Facelli J M. Effect of sheep enclosure on the soil seed bank annul vegetation in chenopod shrub lands of South Australia. Journal of Arid Environment, 1999, 42: 117-128.
[24]
Middleton N J, Thomas D S G. World Atlas of Desertification (2nd edition)[M]. London: Edward Amold, 1998: 5-12.
[25]
Du Y T, Zhang D J. Effect of enclosure and grazing prohibition on the improvement of deteriorated grassland in alpine area. Pratacultural Science, 2007, 24(7): 22-24.
[26]
Han T H, Zhao Z, Wang A L, et al . Studies community composition and productivity in eastern edge of Qinghai-Tibetan Stipa aliena grassland. Acta Prataculturae Sinica, 2007, 16(6): 62-66.
[27]
Li Y Z, Fan J W, Zhang L X, et al . The impact of different land use and management on community composition, species diversity and productivity in a typical temperate grassland. Pratacultural Science, 2013, 22(1): 1-9.
[28]
Zuo W Q, Wang Y H, Wang F Y, et al . Effects of enclosure on the community characteristics of Leymus chinensis in degenerated steppe. Pratacultural Science, 2009, 18(3): 12-19.
[29]
Wang H, Guo Z G, Xu X H, et al . Response of vegetation and souls to desertification of alpine meadow in upper basin of the Yellow River, China. New Zealand Journal of Agricultural Research, 2007, 50:491-501.
[30]
Wang S, Wilkes A, Zhang Z, et al . Management and land use change effects on soil carbon in northern China’s grassland; a synthesis. Agriculture, Ecosystems & Environment, 2011, 142: 329-340.
[31]
Elton C S. Ecology of Invasions by Animal and Plant[M]. London: Chapman and Hall, 1977: 50-72.
[32]
Odum E P. Fundamentals of Ecology[M]. Philadelphin: Saunders, 2004: 132-157.
[33]
Wang S P, Wang Y F, Chen Z Z. Effect of climate change and grazing on populations of Cleistogenes squarrosa in Inner Mongolia steppe. Acta Phytoecologica Sinica, 2003, 27(3): 337-343.
[34]
Han W J, Chun L, Hou X Y, et al . Species composition of a Leymus chinensis +frobs community and standing biomass under over-grazed environment. Pratacultural Science, 2009, 26(9): 195-199.
[35]
Wang X, Song N P, Yang X G, et al .The response of grassland plant diversity to soil factors under grazing disturbance. Pratacultural Science, 2013, 22(5): 27-36.
[36]
Shan G L, Xu Z, Ning F, et al . Influence of enclosure year on community structure and species diversity on a typical steppe. Acta Prataculturae Sinica, 2008, 17(6): 1-8.
[37]
Xin Y J, Du T Y, Xin Y C. The evaluation of carrying capacity of grassland in Qinghai. Qinghai Prataculture, 2011, 20(4): 13-22.
[38]
Pi N L. Energy dynamics of the population of sheep in the alpine meadow ecosystemⅠ.Measurement of daily dry matter intake and excreta of Tibetan sheep. Alpine Meadow Ecosystem[M]. Lanzhou: Gansu People’s Publishing House, 1982:67-72.
