甘肃省张掖市土地荒漠化发展动态及成因探析  

Causes and Developmental Dynamic of Land Desertification in Zhanye, Gansu Province

作　　者：王金叶 马永俊[2] 江泽平[3] 

机构地区：[1]甘肃省祁连山水源涵养林研究院,甘肃张掖734000 [2]浙江师范大学旅游学院城市规划系,浙江金华321004 [3]中国林业科学研究院林业研究所,北京100091

出　　处：《中国沙漠》2005年第3期427-432,共6页Journal of Desert Research

基　　金：国际科技合作重点项目(2002DF000021);国家高技术研究发展计划子课题(2002AA2Z4011)共同资助

摘　　要：张掖市土地荒漠化的面积由新中国成立初到1993年增加了一倍,1999年比1993年增加59265hm2;土地荒漠化的发生与发展是自然和人为因素综合作用的结果,自然因素是土地荒漠化发生与发展的客观原因,但在具体的时间和空间范围内,人为因素是导致土地荒漠化发生、发展和加剧的最直接、最主要因素。对于客观原因形成土地荒漠化的作用,人类在有限的发展过程中很难改变,人类能做的仅仅是在认识土地荒漠化形成的人为原因的基础上,通过改变自身的行为来抑制土地荒漠化进程,恢复退化的自然植被。人为因素的作用体现在人口激增、不合理的生产活动和政府决策失误三个方面,不合理的生产活动表现为超载过牧、过度垦荒、过度樵采、水资源利用不当等方面。The area of land desertification had increased one time from the foundation of People’s Republic of China to 1993, and had increased (59 265) hm 2 from 1999 to 1993. There are two reasons that caused land desertification: the nature factors and the artificial factors. The nature factors were objective and were very difficult to change in a short time; the artificial factors, such as population explosion, unreasonable human activity and policy default etc., were the most important and direct factors in a certain time and place. So the only way that people can do to delay and prevent the progress of land desertification and recover the vegetation was to recognize the artificial causes that lead land desertification and to change the behavior of human-self.

关 键 词：土地荒漠化 发展动态 自然因素 人为因素 张掖市 甘肃 成因分析 生态环境 

分 类 号：S157[农业科学—土壤学] S288[农业科学—农业基础科学]