北方土石山区的土地压力及其缓解途径
收稿日期: 2009-08-20
修回日期: 2010-01-30
网络出版日期: 2010-04-25
基金资助
国家自然科学基金项目(40671009)
Land Pressure and Its Alleviating Approaches for the Mountainous Region of Northern China
Received date: 2009-08-20
Revised date: 2010-01-30
Online published: 2010-04-25
Supported by
National Natural Science Foundation of China, No.40671009
以北方土石山区27个小流域样本数据为基础,针对流域粮食生产、经济发展和生态保护对土地的需求,构建了土地压力定量评估方法,评估了各流域的土地压力,并将其与实际土地生产力进行了比较,进而从各小流域的经验事实中提取出使两者平衡的有效途径。结果表明,土地压力在空间上具有非均衡性,但相对于土地生产力的相对土地压力则存在空间均衡化的趋势。2000年前后,只有76%的样本小流域能够支撑人均300 kg/a的粮食生产压力,只有约20%的样本小流域能够支撑其经济发展压力,但这些小流域的土地压力最终都得到了有效缓解。劳动力转移、发展经济林果和特色产业等是缓解上述压力的主要途径。
朱会义 . 北方土石山区的土地压力及其缓解途径[J]. 地理学报, 2010 , 65(4) : 476 -484 . DOI: 10.11821/xb201004009
The mountainous region of northern China including mountain areas in the Haihe and Huaihe drainage basins covers an area of 28×104 km2,where soil erosion is the overwhelming environment issue.Since the 1950s,soil and water conservation projects,such as those based on small watersheds,have partly improved the situation of soil erosion,but there is still 13.47×104 km2 of eroded area due to land use and land cover changes under the pressures of both population growth and economic development.Therefore,to alleviate regional land pressure becomes more important in the restoration of regional environment.In this paper,we evaluate the grain production pressures,economic development pressures and soil conservation pressures for 27 sample watersheds listed in those soil conservation projects,and then compare their land pressures and actual production abilities to find out which alleviating approaches were adopted and which approach performed the most important.Empirical analysis reveals that land pressure was spatially non-balanced,but there was a balancing trend between land pressure and production ability.If none of alleviating approaches had been adopted,only 76% of the watersheds could bear grain production of 300 kg/a per capita,another 24% of the watersheds could only bear grain production of 225 kg/a per capita,while about 18% of the watersheds could bear their economic development pressure that is equal to average labors\' alternative cost.Out-migration of labors,fruit production and locally specified tour were the major approaches to alleviate land use pressures,and labors migration performed the most important.Those approaches alleviated not only grain production pressures and economic development pressures of the watersheds,but also soil conservation pressures.
[1] Jing Ke, Wang Wanzhong, Zheng Fenli. Soil Erosion and Environment in China. Beijing: Science Press, 2005: 278-281. [景可, 王万忠, 郑粉丽. 中国土壤侵蚀与环境.北京：科学出版社2005: 278-281.]
[2] Jonathan A Foley, Ruth DeFries, Gregory P Asner et al. Global consequences of land use. Science, 2005, 309: 570-574.
[3] Cai Yunlong, Meng Jijun. Ecological reconstruction of degraded land: A social approach. Scientia Geographica Sinica, 1999, 19(3): 198-204. [蔡运龙, 蒙吉军. 退化土地的生态重建: 社会工程途径. 地理科学, 1999, 19(3): 198-204.]
[4] Chen Baiming. An outline of the research method of the project “The productivity and population carrying capacity of the land resource in China”. Journal of Natural Resources, 1991, 6(3): 197-205. [陈百明. “中国土地资源生产能力及 人口承载量”项目研究方法概论. 自然资源学报, 1991, 6(3): 197-205.]
[5] Masahiro Umezaki, Yukio Kuchikura, Taro Yamauchi et al. Impact of population pressure on food production: An analysis of land use change and subsistence pattern in the Tari Basin in Papua New Guinea Highlands. Human Ecology, 2000, 28(3): 359-381.
[6] Verburg P H, Veldkamp T, Bouma J. Land use change under conditions of high population pressure: The case of Java. Global Environmental Change, 1999, (9): 303-312.
[7] Getimis P, Spanidis N. Land-use pressure indicators (preliminary and complementary reports). Working Group 1.5 Land-use Pressure, Report for Stockholm, February 1999.
[8] Fu Bojie, Chen Liding, Ma Cheng. The index system and method of land sustainable use evaluation. Journal of Natural Resources, 1997, 12(2): 113-118. [傅伯杰, 陈利顶, 马诚. 土地可持续利用评价的指标体系与方法. 自然资源学报, 1997, 12(2): 113-118.]
[9] Chen Baiming. Design and evaluation of indicator system of regional land for sustainable use. Progress in Geography, 2002, 21(3): 204-205. [陈百明. 区域土地可持续利用指标体系框架的构建与评价. 地理科学进展, 2002, 21(3): 204-205.]
[10] Xie Gaodi, Cheng Shengkui, Ding Xianzhong. A study on global land use change under the pressure of population growth. Journal of Natural Resources, 1999, 14(3): 193-199. [谢高地, 成升魁, 丁贤忠. 人口增长胁迫下的全球土地利 用变化研究. 自然资源学报, 1999, 14(3): 193-199.]
[11] Cai Yunlong, Fu Zeqiang, Dai Erfu. The minimum area per capita of cultivated land and its implication for the optimization of land resource allocation. Acta Geographica Sinica, 2002, 57(2): 127-134. [蔡运龙, 傅泽强, 戴尔阜. 区 域最小人均耕地面积与耕地资源调控. 地理学报, 2002, 57(2): 127-134.]
[12] Feng Zhiming, Shi Dengfeng. Chinese food consumption and nourishment in the latest 20 years. Resources Science, 2006, 28(1): 2-8. [封志明, 史登峰. 近20 年来中国食物消费变化与膳食营养状况评价. 资源科学, 2006, 28(1): 2-8.]
[13] Li Lite. Need-supply analysis of food and agriculture management in China. Food and Nutrition in China, 2006, (11): 8-10. [李里特. 中国食物供需分析与农业经营. 中国食物与营养, 2006, (11): 8-10.]
[14] Han Jun. Grain need in the meaning of food safety. Outlook Weekly, 2005, (27): 56-57. [韩俊. 多少粮食才安全. 瞭望 新闻周刊, 2005, (27): 56-57.]
[15] Zhu Huiyi. Land use advantage of different regions in China and its evolvement mechanism. Acta Geographica Sinica, 2007, 62(12): 1318-1326. [朱会义. 中国土地利用的分区优势极其演化机制. 地理学报, 2007, 62(12): 1318-1326.]
[16] Ellis F. Hu Jingbei trans. Peasant Economics: Farm Households and Agrarian Development. Shanghai: Shanghai People's Publishing House, 2006: 135-158. [弗兰克.艾利思. 胡景北译. 农民经济学: 农民家庭农业和农业发展. 上海: 上海人民出版社, 2006: 135-158.]
[17] Mankiw N G. Principles of Economics. USA: Dryden Press, 1998: 18-55.
[18] Xiao Duning, Chen Wenbo. On the basic concepts and contents of ecological security. Chinese Journal of Applied Ecology, 2002, 13(2): 354-358. [肖笃宁, 陈文波. 论生态安全的基本概念和研究内容. 应用生态学报, 2002, 13(2): 354-358.]
[19] Acs S, Hanley N, Dallimer M et al. The effect of decoupling on marginal agricultural systems: implications for farm incomes, land use and upland ecology. Land Use Policy, 2010, 27: 550-563.
[20] Shi Minjun, Wang Tao. An application of bio-economic household model to analysis on man-land relationship behavior in ecologically fragile land of China. Acta Geographia Sinica. 2005, 60(1): 165-174. [石敏俊, 王涛. 中国生态 脆弱带人地关系行为机制模型及应用. 地理学报, 2005, 60(1): 165-174.]
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