摘要
基于土地资源承载力和土地资源承载力指数模型,从区域、县域、镇域三个角度全面分析2000—2015年丹江口库区河南辖区土地资源承载力和土地资源限制度的空间格局与演变规律。结果表明:(1)区域尺度:16年来,土地资源承载力呈现波状变化,整体略有提高,人口长期处于超载状态,人粮关系矛盾明显;2000年以来,基于人口分布的土地资源限制度由35.74%下降到24.23%,基于人口分布的资源限制度在逐渐下降。(2)县域尺度:16年来,除2015年的内乡县出现粮食盈余,其他各县始终处于人口超载状态;2000年以来,淅川县、内乡县和卢氏县的土地资源限制度呈现持续降低的趋势,西峡县和邓州市的土地资源限制度持续增加,而栾川县的土地资源限制度呈现起伏变化。(3)镇域尺度:16年来,粮食盈余的乡镇个数逐渐增多,人粮关系整体向缓和方向转变;2000年以来,不受人口限制的乡镇个数逐年增加,限制度在40%以上区域的人口比例依然高达37.89%,基于人口分布的土地资源压力依然比较严重。
Based on the land resource carrying capacity and the land resource carrying capacity index model,we comprehensively analyzed the spatial pattern and evolution laws of the land resource carrying capacity and the land resource limitation degree in the Danjiangkou Reservoir District of Henan Province from 2000 to 2015.The results show that:(1)Region scale:The land resource carrying capacity showed a wavy change and the overall scale enhanced in the past 16 years,but the population had been overloaded for a long time,and the human-food relationship had been obviously contradictory.Since 2000,the land resource limitation degree in population distribution had decreased from 35.74%to 24.23%,so it had been gradually decreasing.(2)County scale:For the past 16 years,except for the Neixiang County in 2015 which had a grain surplus,the other counties were always been overloaded.Since 2000,the land resource limitation degree in Xichuan County,Neixiang County,and Lushi County had been continuing to descend,while Xixia County,Dengzhou City had been increasing and Luanchuan County had fluctuated.(3)Township scale:In the past 16 years,with the number of grain surplus towns gradually increasing,the human-food relationship was shifting to relaxation.Although the towns number that were not subject to population restrictions had been increasing year by year since 2000,the population proportion of the towns which the limitation was above 40%were still as high as 37.89%,so the pressure on land resources in the population distribution was still serious.
作者
何仁伟
谢磊
李立娜
HE Renwei;XIE Lei;LI Lina(City Situation Survey Research Center,Beijing Academy of Social Sciences,Beijing 100101,China;School of Accounting,Guangdong University of Finance and Economics,Guangzhou Guangdong 510320,China;School of Resources and Environment,Xichang College,Xichang Sichuan 615013,China)
出处
《生态经济》
北大核心
2020年第9期142-150,共9页
Ecological Economy
基金
国家自然科学基金项目“山区农户生计与贫困、生态环境问题研究”(41461040)。
关键词
丹江口库区河南辖区
人粮关系
土地资源承载力
土地资源限制度
Danjiangkou Reservoir Area in Henan Province
human-food relationship
land resource carrying capacity
land resource limitation
