草业科学2017，Vol.34Issue(10)：1991-1998,8.DOI:10.11829/j.issn.1001-0629.2017-0252
青海省兴海县天然草地牧草生长发育与气候条件的关系
The relations of natural grassland vegetation growth and climate conditions in Xinghai of Qinghai Province
吴让 1韩炳宏 2韩通 1周秉荣 2李博 3牛得草 2傅华1
作者信息
- 1. 青海省海南州兴海县气象局 青海兴海813399
- 2. 青海省防灾减灾重点实验室,青海西宁810001
- 3. 甘肃省白银市气象局,甘肃白银730900
- 折叠
摘要
Abstract
To understand the relationship between natural grassland vegetation growth and meteorological conditions in Xinghai,Qinghai Province,the present study was based on 11 meteorological and grass observation materials that analyzed the relationship of turning green,growth height,yield characteristics,and hydrothermal factors systematically.The results showed that the turning green period for grass during the spring rain was 38 d greater than during the spring drought years.The grass turning green period was in advance or delay,which related with the time of ≥0 ℃,the rainfall of March to April of the measured year and rainfall of September to November of the previous year during 2005-2015.In addition,precipitation was the best climate model to obtain a linear regression equation for the period of the grass turning green.Grass height growth amounts were positively correlated to precipitation during all stages;however,were negatively correlated to temperature.Moreover,precipitation increased 6～10 mm during the forage growth stage,and new herbage yields added 225 kg per hectare.Thus,precipitation was a major meteorological factor that limited the period of grass turning green,and its growth and development.关键词
兴海县/牧草返青/生长发育/牧草高度/牧草产量/气候条件Key words
Xinghai/the periods of turn green/the growth and development/grass height/grass yields/the conditions of meteorology分类
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吴让,韩炳宏,韩通,周秉荣,李博,牛得草,傅华..青海省兴海县天然草地牧草生长发育与气候条件的关系[J].草业科学,2017,34(10):1991-1998,8.
