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[1]WEI Zhan-xiong,GUO Lian-yun,XIE Wei-dong.The Characteristics of Climate Change on Alpine Pasture Growing Season and the Impacts to the Length of Herbage Growth of the 3-River Sources, Qinghai Province[J].Research of Soil and Water Conservation,2011,18(04):170-174,178.

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The Characteristics of Climate Change on Alpine Pasture Growing Season and the Impacts to the Length of Herbage Growth of the 3-River Sources, Qinghai Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 04 Page number: 170-174,178 Column: Public date: 2011-08-20

Title:: The Characteristics of Climate Change on Alpine Pasture Growing Season and the Impacts to the Length of Herbage Growth of the 3-River Sources, Qinghai Province

Author(s):: WEI Zhan-xiong¹, GUO Lian-yun², XIE Wei-dong³; 1. Three Rivers Office in Xinghai County of Qinghai Province, Xinghai, Qinghai 813300, China;
2. Meteorological Bureau in Hainan State of Qinghai Province, Gonghe, Qinghai 813000, China;
3. Meteorological Bureau in Xinghai County, Xinghai, Qinghai 813300, China

Keywords:: climate warming; Stipa sareptana var.krylov Ⅱ; development stage; the 3-Rivers Source; Xinghai County

CLC:: S812;Q142.2

DOI:: -

Abstract:: Data for this study included development materials of Stipa sareptanavar. krylovⅡ from 1999 to 2010, and meteorological records from 1961 to 2010, which were both collected at the standard weather station of Xinghai County, Qinghai Province, Analysis of the forage growing season, climate change and its effect on the length of herbage growth. The results showed that: (1) The average temperature (from April to Septemper) increased with 0.36 ℃ every 10 years, precipitation significantly increased with 148.6 mm every 10 years, sunshine hours in every 10 years, a weak increase at the rate of 7.7 h, the general climate trends show a warming feature, it’s very favorable to alpine pasture on the growth and development; (2) Stipa sareptanavar. krylovⅡ length of each growth period, 0℃-number of days turning green, turning green-the number of days heading stage, flowering-maturity days, mature-number of days showed wilting shortened year by year trend, which mature-wilting significantly reduced number of days. Heading-number of days the flower trend was gradually extended; (3) For Stipa sareptanavar. krylovⅡ 0℃-number of days turning green, February precipitation, January average temperature, total sunshine hours were affected most;next spring-heading days, greater impact on the cumulative rainfall;On the heading-number of days flowering in early July precipitation and sunshine hours accumulated a great impact;mature-the wilting of the greatest number of days the climate factor is August, in mid-September the average temperature, ≧5℃ day daily average temperature days and the cumulative precipitation and cumulative sunshine hours. Flowering-maturity has a greater impact on the number of mid-July and late August and the average temperature and accumulated in early temperature.

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