| 西北干旱半干旱区生态系统影响因子初探 |
| |
| 引用本文： | 康凤琴,张杰,王静.西北干旱半干旱区生态系统影响因子初探[J].灾害学,2007,22(3):49-52,62. |
| |
| 作者姓名： | 康凤琴 张杰 王静 |
| |
| 作者单位： | 中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,甘肃,兰州,730020 |
| |
| 基金项目： | 甘肃省气象局十人计划;甘肃省西部之光访问学者计划 |
| |
| 摘 要： | 通过分析百年尺度上中国西北降水空间分布规律和沙漠界线、农牧交错带界线的演变规律,认为:①干旱、半干旱是西北地区的主要气候特征;②生态系统非常敏感和脆弱;③在维持温饱和经济利益驱动下建立的农、牧业产业结构,是造成西北环境恶化的最主要的原因。
|
| 关 键 词： | 生态系统 降水 种植结构 中国西北 |
| 文章编号： | 1000-811X（2007）03-0049-04 |
| 修稿时间： | 2007-02-10 |
The Influential Factors of the Arid and Semi-Arid Area on the Ecosystem in the Northwestern China |
| |
| Kang Fengqin,Zhang Jie,Wang Jing.The Influential Factors of the Arid and Semi-Arid Area on the Ecosystem in the Northwestern China[J].Journal of Catastrophology,2007,22(3):49-52,62. |
| |
| Authors: | Kang Fengqin Zhang Jie Wang Jing |
| |
| Institution: | Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province, Key Open Laboratory of Arid Climate Change and Reducing Disaster, China Meteorology Administrator, Lanzhou Institute of Arid Meteorology, China Meteorology Administrator, Lanzhou 730020, China |
| |
| Abstract: | By analyzing the change laws of the spatial-temporal distribution of precipitation,the desert borderlines and the ecotone between agriculture and pasture,it is suggested that the arid and semi-arid is the main climatic characteristic in northwest China.The ecosystem is very sensitive and weak.The structure of agriculture and pasture established aiming at keeping the people having adequate food and clothing and driven by economic interests is the main cause of worsening ecosystem and environment. |
| |
| Keywords: | ecosystem precipitation plant structure northwestern China |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
