CAJ | 학술논문

为促进区域土地生态安全,探寻土地安全利用的有效途径,在甘肃省庄浪县以土地利用变更数据以及其他相关社会经济数据为依据,利用压力-状态-响应(PSR)模型构建了庄浪县土地生态安全动态评价指标体系,对该县1999~2010年土地利用生态安全状况进行了评价.结果表明：庄浪县土地生态安全水平整体较低,平均值仅为0.367,处在较差状态；在时间梯度上,庄浪县土地生态安全值不因压力指标安全趋向的改变而呈下降趋势,决定其生态安全的主要因素是土地生态安全现状和对土地生态安全压力的响应,权重份额分别占到了0.49和0.28；在一定的社会经济基础上,当所有压力指标起正作用时,生态安全水平呈上升趋势；当所有压力指标起负作用时,生态安全状况持续下降.
위촉진구역토지생태안전,탐심토지안전이용적유효도경,재감숙성장랑현이토지이용변경수거이급기타상관사회경제수거위의거,이용압력-상태-향응(PSR)모형구건료장랑현토지생태안전동태평개지표체계,대해현1999~2010년토지이용생태안전상황진행료평개.결과표명：장랑현토지생태안전수평정체교저,평균치부위0.367,처재교차상태；재시간제도상,장랑현토지생태안전치불인압력지표안전추향적개변이정하강추세,결정기생태안전적주요인소시토지생태안전현상화대토지생태안전압력적향응,권중빈액분별점도료0.49화0.28；재일정적사회경제기출상,당소유압력지표기정작용시,생태안전수평정상승추세；당소유압력지표기부작용시,생태안전상황지속하강.
In order to promote regional land ecological security,and explore the effective ways of the safe utilization of land,the evaluation index system of ecological was constructed based on PSR model,and considered fully the effects of different ecological safety trend of the pressure index on land eco-security. Land ecological security status were evaluated during 1 999 to 2010 according to the data of land use change and related social economic data from Zhuanglang.The results showed that the whole level of land ecologi-cal security whole was low,mean value was only 0.376,which was in a poor state.Ecological safety did not due to the change of the pressure index security trends and showed a descending trend with time.Land eco-logical security status and response were the main decision factors,and weight share were respectively over 0.49 and 0.28.When all the pressure indexes were positive,ecological security level showed a rising trend, opposite,ones were negative,ecological security situation continued to decline.