农业工程学报
農業工程學報
농업공정학보
2014年
5期
220-227
,共8页
曹琦%陈兴鹏%师满江%姚勇
曹琦%陳興鵬%師滿江%姚勇
조기%진흥붕%사만강%요용
土地利用%结构%回归分析%人文因素%驱动力
土地利用%結構%迴歸分析%人文因素%驅動力
토지이용%결구%회귀분석%인문인소%구동력
land use%structure%regression analysis%human dimensions%driving force
为探讨人文因素在黑河中游绿洲土地利用/覆盖变化过程中的驱动作用,以张掖市甘州区为例,首先分析了在人文因素作用下,研究区2002-2011年各土地利用类型面积变化的速度和幅度以及土地利用/覆盖程度综合指数;其次,在明确各类型土地利用变化趋势的基础上,建立人文因素指标体系,模拟人文因素与土地利用/覆盖变化之间的多元线性关系;最后通过灰色关联分析,提取影响不同用地类型的关键人文因素指标。分析结果表明:2002-2011年甘州区土地利用/覆盖整体结构中,建设用地加速扩张,农用地资源减少,土地利用结构非农化趋势明显;人文因素对甘州区主要用地类型的LUCC(land use/cover change)过程的驱动作用达到90%以上,且在不同类型用地变化过程中各人文因素贡献率不同;采用灰色关联分析法得出,文章评价指标体系中,农业人口数量下降,农业科技人员数量上升以及电机井总数量持续增加分别是2002-2011年甘州区城乡建设用地、交通水利建设用地、耕地变化的主导人文因素指标。
為探討人文因素在黑河中遊綠洲土地利用/覆蓋變化過程中的驅動作用,以張掖市甘州區為例,首先分析瞭在人文因素作用下,研究區2002-2011年各土地利用類型麵積變化的速度和幅度以及土地利用/覆蓋程度綜閤指數;其次,在明確各類型土地利用變化趨勢的基礎上,建立人文因素指標體繫,模擬人文因素與土地利用/覆蓋變化之間的多元線性關繫;最後通過灰色關聯分析,提取影響不同用地類型的關鍵人文因素指標。分析結果錶明:2002-2011年甘州區土地利用/覆蓋整體結構中,建設用地加速擴張,農用地資源減少,土地利用結構非農化趨勢明顯;人文因素對甘州區主要用地類型的LUCC(land use/cover change)過程的驅動作用達到90%以上,且在不同類型用地變化過程中各人文因素貢獻率不同;採用灰色關聯分析法得齣,文章評價指標體繫中,農業人口數量下降,農業科技人員數量上升以及電機井總數量持續增加分彆是2002-2011年甘州區城鄉建設用地、交通水利建設用地、耕地變化的主導人文因素指標。
위탐토인문인소재흑하중유록주토지이용/복개변화과정중적구동작용,이장액시감주구위례,수선분석료재인문인소작용하,연구구2002-2011년각토지이용류형면적변화적속도화폭도이급토지이용/복개정도종합지수;기차,재명학각류형토지이용변화추세적기출상,건립인문인소지표체계,모의인문인소여토지이용/복개변화지간적다원선성관계;최후통과회색관련분석,제취영향불동용지류형적관건인문인소지표。분석결과표명:2002-2011년감주구토지이용/복개정체결구중,건설용지가속확장,농용지자원감소,토지이용결구비농화추세명현;인문인소대감주구주요용지류형적LUCC(land use/cover change)과정적구동작용체도90%이상,차재불동류형용지변화과정중각인문인소공헌솔불동;채용회색관련분석법득출,문장평개지표체계중,농업인구수량하강,농업과기인원수량상승이급전궤정총수량지속증가분별시2002-2011년감주구성향건설용지、교통수리건설용지、경지변화적주도인문인소지표。
Land-Use and Land-Cover Change (LUCC) is a core program supported by the International Geosphere-Biosphere Program (IGBP) and the International Human Dimensions Program on Global Environmental Change (IHDP). Analyzing anthropogenic influence impacting on LUCC is one of key frontier domains supported by IGBP and IHDP, which requires differentiating and analyzing impact by anthropogenic factors on LUCC, and tightly combining LUCC with social, political, and economic issues. LUCC reflects the most direct and most close relationship between humanity and nature in the interaction. It is a process of adjusting all kinds of land use constantly in order to meet the need of social and economic development, and give expression to the development tendency that humans utilize land to be working and living. <br> Due to the effect of the restriction of the special natural conditions, resources and the environment system in a continental river basin in an arid zone are especially affected by anthropogenic influences. Some scholars pointed out that, if the effective strength of human activities exceeds 37%, the river surface runoff process shits from its natural state to giving priority to an anthropogenic disturbance, Therefore, affecting the middle and lower reaches of the oasis area size would directly impact on the process of the middle reaches of land -use and land-cover change. In order to understand the current problem of the land, we needed to identify the key human influencing factors, discuss its regulatory mechanism, and evaluate its effect on land-use and land-cover change, on basis of which we sought countermeasures to solve the problem. There are many attempts at related research on an anthropogenic driving effect on land -use and land-cover change by quantitative analysis. However, the anthropogenic influence during the course of basin scale land change has not been extensively researched. <br> In order to investigate the driving effect by anthropogenic influence on land use and land cover change in the Heihe Middle Reaches, this paper took Ganzhou District as an example. First, this article analyzed the velocity and amplitude of various land use types and a comprehensive index of LUCC in the study area under anthropogenic influence from the year 2002 to 2011. Secondly, based on specifying the trend of various types of land use change, this article established a humanistic factors index system, and simulated multiple linear relationships between humanities factors and LUCC. Finally, it extracted key humanity factors that affected different land use types through Grey Relational Analysis. The results of the analysis were as follows:1) In the overall structure of land use/cover of the Ganzhou area from 2002 to 2011, construction land expanded at an accelerating pace, agricultural land resources were being reduced, and the non-agricultural trend of land use structure was evident. 2) Population, poverty and wealth conditions, social economy, technology, policy and cultural concepts resulted in resultant forces to promote regional land use/cover change. The contribution rates of different anthropogenic influences were different in the process of land use change of different types. 3) Using a grey correlation analysis method in the evaluation index system, we found that the agricultural population declined, agricultural science and technology personnel rose, and the amount of motor-pumped well electricity continuing to grow were the dominant cultural factors index respectively to the change of urban and rural construction land, transportation and water conservancy, construction land and cultivated land in 2002-2011.