摘要
对立统一于干旱区的绿洲—荒漠生态系统在降水等自然因素和人类活动等人为因素的影响下不断进行着演化.从长期看,这一演化过程具有不可预测性,短期内却有细微可预见性.现如今在绿洲扩展同时,荒漠也在扩展,整体趋势仍是荒漠在扩展.为维持绿洲的稳定性,促使绿洲—荒漠系统处于一种稳定的发展趋势,本文从分析绿洲-荒漠这对对立统一的生态系统入手,在探讨引起这对生态系统演化的自然因素和人为因素的基础上,确定了自然因素中的降水和人为因素中的政府调控行为为演化的主导因素,初步探索了促使这对生态系统统演化的主导因素作用所具有的非线性关系,这对维持绿洲的稳定性,抑制荒漠扩展有一定的实际意义.
Oasis-desert ecosystem is being evolved by natural factor, such as precipitation, and factitious factor as human activity. The evolutional process can＇t be foreseen, but it can be predicted short terms. However, today＇s trend is that desert is expanding while oasis is developing. In order to maintain the stability of oasis, and to make the evolution of oasis-desert toward stable tendency, we analyze oasis-desert ecosystem, discuss how natural factor and contrived factor cause its evdution, and ascertained precipitation and governmental regulation are leading factor This has practical significance in restraining desert from stretching, and in sustaining oasis stability.
出处
《西南民族大学学报（自然科学版）》
CAS
2007年第5期1075-1080,共6页
Journal of Southwest Minzu University(Natural Science Edition)
基金
国家重点基础研究发展规划(G1999043503)和(G1999043508)资助
中德合作项目"新疆塔里木胡杨林自然保护区胡杨林植被现状与持续土地利用"中子课题"芦苇的生理与生态研究"
德国大众汽车公司基金会赞助.
关键词
绿洲
荒漠
演化因素
线性
oasis
desert
factor of evolution
linear
