The relation of vegetation growth indexes and meteorological factors on alpine grassland

doi:10.11924/j.issn.1000-6850.casb18100027

Abstract

Abstract: In order to further find the climate models of the grassland vegetation phenological phases between growth indexes and meteorological factors on alpine region, This paper was based on meteorological and nearly 11 a pasture observation data, and used curve estimation analysis method to discuss the characteristics of different interannual grassland vegetation phenological phases growth indexes changes and the relation patterns of the meteorogical factors. The results showed that different annual temperature and precipitation had no significant difference, the growth indexes of grassland vegetation phenological phases performed not the same in different interannual. the grassland vegetation heights of 2005 and 2010 was significantly higher than in 2015, and there was no significant difference among vegetation coverages in the different annual. The tendency of the grassland vegetation yields were in common with vegetation heights. In addition, the largest grassland vegetation variation coefficient of each parameter index in 2014, was 85%, 55% and 94%, respectively; But the minimal variation in 2015, was 48%, 32% and 64%, respectively. Moreover, annual average temperatures had nothing to do with heights in different interannual vegetation phenological periods on alpine meadow, and between coverages and yields were a line functions; Average annual rainfalls with the heights and yields were all line functions. Thus, seasonal precipitation was a driven dominant factor to high altitude meadow vegetation heights, coverages, and the yields.

李文辉 and 赵恒和. The relation of vegetation growth indexes and meteorological factors on alpine grassland[J]. Chinese Agricultural Science Bulletin, 2019, 35(22): 117-122.

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