城镇化进程对沙漠化逆转趋势影响的动态计量分析——以宁夏盐池县为例

doi:10.7522/j.issn.1000-694X.2016.00060

摘要/Abstract

摘要： 以典型沙漠化逆转区宁夏盐池县为例，对2003-2013年城镇化与沙漠化逆转趋势进行综合测度，利用ADF单位根检验、Granger因果检验、脉冲响应函数及方差分解模型就城镇化进程对沙漠化逆转趋势的动态影响进行分析。结果表明：（1）2003年以来，盐池县城镇化水平逐步提高，沙漠化逆转综合指数基本保持在0.3以上。（2）作为人文驱动因素，城镇化综合水平虽不直接对沙漠化逆转趋势产生作用，但其分量指标却对沙漠化逆转趋势及逆转压力的产生、状态的表现和响应的形成产生冲击。（3）从长期预测来看，沙漠化逆转趋势及分量指标受自身冲击的影响随时间的推移而逐渐减小，城镇化对沙漠化逆转的解释能力正在逐步提升，人口迁移、经济增长、社会进步和城镇化发展对逆转趋势、压力、响应和状态的冲击影响分别维持在78%、58%、13%和9%的水平上。未来盐池县城镇化的发展应当以人口城镇化、经济城镇化作为关键突破点，以促进农户非农生计的可持续性，提高城镇化对生态环境的促进作用。

关键词: 城镇化, 沙漠化逆转趋势, Granger因果检验, VAR模型, 盐池县

Abstract: There was complex relationship between urbanization subsystem and ecological environment subsystem in different regions and different phases. This paper explores the interactive process and quantitative mechanism of urbanization and desertification reversal trend during 2003-2013 in Yanchi, a typical area of desertification reversed of Ningxia, China. The paper measures the comprehensive level and dimension of urbanization and desertification reversal with entropy method, examines causal relationships between sub-indexes with ADF stationary test and Granger causality test, and analyzes the dynamic process during 2003-2013 with impulse response and variance decomposition of VAR model. Results showed that:(1) The urbanization level in Yanchi had been gradually increasing since 2003, meanwhile the desertification reversal index remained at more than 0.3. (2) The comprehensive index of urbanization did not directly affect the desertification reversal trend, but its component indicators impacted the desertification reversal trend, pressure, status and response. (3) The explanatory power of urbanization to desertification reversal was gradually improving. Population migration, economic growth, social progress and urbanization development impact on desertification reversal trend, pressure, state, response were maintained at the level of 78%, 58%, 13% and 9%, respectively. As an effective way to improve the ecological environment of inland arid area, the population urbanization and society urbanization should be regarded as the key breakthrough to enhance the urbanization's positive effect to ecological environment in Yanchi County.

Key words: urbanization, desertification reversal trend, Granger causality test, VAR model, Yanchi County

中图分类号:

F529.1

王娅, 周立华, 路慧玲, 陈勇, 安祎玮. 城镇化进程对沙漠化逆转趋势影响的动态计量分析——以宁夏盐池县为例[J]. 中国沙漠, 2017, 37(5): 867-877.

Wang Ya, Zhou Lihua, Lu Huiling, Chen Yong, An Yiwei. Dynamic Econometric Analysis of the Relationship between Urbanization and Desertification Reversal Trend:a case of Yanchi, Ningxia, China[J]. JOURNAL OF DESERT RESEARCH, 2017, 37(5): 867-877.

参考文献

[1] 孙平军,修春亮,张天娇.熵变视角的吉林省城市化与生态环境的耦合关系判别[J].应用生态学报,2014,25(3):875-872.
[2] 张乐勤,张勇.安徽省城镇化演进边际生态环境效应的测度与分析[J].水土保持通报,2014,34(4):208-214.
[3] 乔标,方创琳,李铭.干旱区城市化与生态环境交互胁迫过程研究进展及展望[J].地理科学进展,2005,24(6):31-41.
[4] Portnov B,Safriel N.Combating desertification in the Negev:dryland agriculture vs dryland urbanization[J].Journal of Arid Environments,2004,56(4):659-680.
[5] 郑宇,冯德显.城市化进程中水土资源可持续利用分析[J].地理科学进展,2002,21(3):223-229.
[6] 龙爱华,徐中民.河西走廊绿洲城市化及可持续对策[J].中国人口资源与环境,2002,12(5):57-59.
[7] Vernon H.The urbanization process and economic growth:the so-what question[J].Journal of Economic Growth,2003,8(1):47-71.
[8] 刘艺书.关于我国城市发展模式的争论[J].城市问题,1999,90(4):12-14.
[9] Fang C L.The Ecological Economic Corridor of West China[M].Beijing,China:Commercial Press,2004:184-197.
[10] 陈怀录,姚致祥,苏芳.中国西部生态环境重建与城镇化关系研究[J].中国沙漠,2005,25(3):356-363.
[11] 樊胜岳,周立华,马永欢.宁夏盐池县生态保护政策对农户的影响[J].中国人口资源与环境,2005,15(3):124-128.
[12] 马兵,周立华,路慧玲,等.基于意愿价值评估法的禁牧政策生态补偿定量分析——以宁夏盐池县为例[J].中国沙漠,2015,35(3):800-807.
[13] 路慧玲,周立华,陈勇,等.基于农户视角的盐池县退牧还草政策可持续性分析[J].中国沙漠,2015,35(4):1065-1071.
[14] 程彦培,陈立,张琳,等.盐池县沙漠化土地动态变化影响因素分析[J].中国水土保持,2010(11):34-37.
[15] 要永在,李庆和,杨光.基于ⅡDD的盐池县土地荒漠化动态变化研究[J].内蒙古农业大学学报,2013,34(1):61-65.
[16] 罗能生,李佳佳,罗富政.中国城镇化进程与区域生态效率关系的实证研究[J].中国人口资源与环境,2013,23(11):53-60.
[17] 王长建,张小雷,杜宏茹,等.近30 a新疆城市化与生态环境互动关系的动态计量分析[J].中国沙漠,2012,32(6):1794-1802.
[18] 孜比布拉·司马义,苏力叶·木沙江,帕夏古·阿不来提.阿克苏市城市化与生态环境综合水平协调度评析[J].地理研究,2011,30(3):496-503.
[19] 张秀娟,周立华,陈勇.沙漠化逆转生态经济效益的非市场价值评估——以宁夏盐池县为例[J].中国沙漠,2013,33(1):271-279.
[20] 赵哈林,周瑞莲,赵学勇,等.科尔沁沙地沙漠化正、逆过程的地面判别方法[J].中国沙漠,2008,28(1):8-15.
[21] Liu N,Zhou L H,Chen Y.et al.Identification and evaluation of desertification reversal in China:indicators and methods review[J].Sciences in Cold and Arid Regions,2014,6(3):190-200.
[22] Bakr N,Weindorf D C,Bahnassy M H,et al.Multi-temporal assessment of land sensitivity to desertifaction in a fragile agro-eccosystem:enviromental indicators[J].Ecological Indicators,2012,15(1):271-280.
[23] Seper A,Hassanli A M,Ekhtesasi M R,et al.Quantitative assessment of desertification in south of Iran using MEDALUS method[J].Environmental Monitoring & Assessment,2007,134(1/2/3):243-254.
[24] Mohamed E.S.Spatial assessment of desertification in north Sinai using modified MEDLAUS model[J].Arab Journal of Geosciences,2013,6(12):4647-4659.
[25] 王富喜,毛爱华,李赫龙,等.基于熵值法的山东省城镇化质量测度及空间差异分析[J].地理科学,2013,33(11):1323-1329.
[26] 王娅,刘发跃,窦学诚,等.基于VAR模型的甘肃省区位塌陷问题研究[J].中国农学通报,2014,30(14):87-91.
[27] 侯阳,张宇清,吴斌,等.沙区城镇化过程的生态环境影响[J].水土保持通报,2013,33(1):97-102.
[28] 杨志海,刘雪芬,王雅鹏.县域城镇化能缩小城乡收入差距吗?——基于1523个县(市)面板数据的实证检验[J].华中农业大学学报:社会科学版,2013,106(4):42-48.
[29] 周立华,朱艳玲,黄玉邦.禁牧政策对北方农牧交错区草地沙漠化逆转过程的定量评价[J].中国沙漠,2012,32(2):308-313.