| 王建兵,李晓媛,王振国.青藏高原东北部农牧交错区气候变化及其对草场植被的影响[J].干旱地区农业研究,2007,(6):216~219 |
| 青藏高原东北部农牧交错区气候变化及其对草场植被的影响 |
| The climate varieties of agro-pastoral zone in the northeastern Qinghai-Xizang Plateau and their impact on grass land vegetation |
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| DOI：10.7606/j.issn.1000-7601.2007.06.43 |
| 中文关键词: 农牧交错区 气候变化 草场植被 |
| 英文关键词:agro-pastoral zone climate varieties grassland vegetaion |
| 基金项目:甘肃省退牧还草科技支撑项目“甘肃省退牧还草效益遥感监测研究”(甘退牧200301) |
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| 中文摘要: |
| 利用青藏高原东北部12个地面气象站1961~2000年的降水、气温资料,分析了区域内近40 a来气候的变化及其对牧草的影响。结果表明,青藏高原东北部农牧交错区从20世纪80年代末开始有明显的暖干化趋势,受气候暖干化,以及超载过牧、草地鼠虫害、滥挖乱垦等因素共同影响,区域内牧草产量下降,牧草群体结构平均密度明显减少,导致草场植被稀疏,草场退化现象日趋严重。 |
| 英文摘要: |
| Based on the preciption and temperature data of 12 weather stations of the northeastern Qinghai-Xizang plateau from 1961～2000,the climate varieties of agro-pastoral zone in the northeastern Qinghai-Xizang Plateau and their impact on vegetation were analised.The results show that from the end of 1980s the climate changing character shows a warm-drying trend in this area.Because of the climatic warm-drying,over pasturing,damage by wild rat,inscet pest and over exploiting,the yield of grassland and the average density of pasturing grass has apparently decreased,the grass land vegetaion is sparsing and degeneration trend is severe. |
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