Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS

Resear ch on Gr adation Evaluation of Cultivated Land Conservation in Suzhou City

  • ( 1.Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, China; 2.Department of
    Urban Planning, Tsinghua University, Beijing 100084, China)

Received date: 2007-02-03

  Revised date: 2007-03-03

  Online published: 2007-05-15


Under the background of globalization and informatization of the world economy, the rapid economic growth and process of urbanization in Suzhou city in future will aggravate the conservation pressure on cultivated land.It is time to consider and redefine the connotation of current cultivated land conservation concept. ( 1)Based on domestic and foreign related researches and the framework of PSR( Pressure-State-Response)model, this paper proposes the gradation evaluation indicator system of cultivated land conservation in Suzhou city among which the Pressure indicator is the environment pressure of cultivated land, and the State indicator is the soil quality and land fragmentation, and the Response indicator is per unit area yield of grain.( 2) Individual indicator evaluation results show that the environment pressure of cultivated land caused by rapid population and economic growth, urban sprawl and freeway networks infrastructure construction is very outstanding; the soil quality of cultivated land is very good, and the land is fertile; the fragmentation is evident because of the division of urban, transport land, lakes, rivers and highland terrain; the unit production ( 6683kg/ha) is higher than that of Jiangsu Province ( 5954kg/ha) and the whole country ( 4399kg/ha) .( 3) The correlative analysis of these individual indicators show that the correlative coefficient is very small, and the various relationships between indicators are performed according to different regional characteristics, and accordingly their weights are difficult to be defined.Based on the research result of correlative analysis of indicators, the paper adopts the Hierarchical Cluster Analysis method for the general gradation evaluation of cultivated land conservation.The results show that the ratio of the area of the 4 ranks is 33.6 ∶32.4 ∶26.7 ∶7.3.The cultivated land of rank S1 is located in the rural areas outside urbanization region and lake areas where four indicators are very good.The cultivated land of rank S2 is located in the Yanjiang plains and the urbanized marginal areas where the soil quality is good, and the level of food production is high.The cultivated land of rank S3 is scattered in the urbanized marginal area and lake-hilly areas where four indicators are common. The cultivated land of rank S4 is scattered in the areas around big cities and lakes hilly areas. ( 4) Then on the basis of regional characteristics and indicators relationships of each cultivated land conservation rank, the gradation system of the 4 ranks is subdivided into 9 ranks, and some conservation measures about cultivated land for each rank are also pointed out.

Cite this article

SU Wei-zhong1, YANG Gui-shan1, GU Chao-lin2 . Resear ch on Gr adation Evaluation of Cultivated Land Conservation in Suzhou City[J]. JOURNAL OF NATURAL RESOURCES, 2007 , 22(3) : 353 -360 . DOI: 10.11849/zrzyxb.2007.03.004


[1] 杨桂山.长江三角洲近50 年耕地变化及其驱动机制研究[J].自然资源学报,2001,16(2):111~117.[YANG Gui-shan.Theprocess and driving forces of change in arable land area in the Yangtze River Delta during the past 50 years.Journal ofatural Resources,2001,16(2):111- 117.] [2] Richard P G.Threat to high market value agricultural lands from urban encroachment:A national and regional perspective[J].Social Science Journal,1995,32(2):137- 156. [3] 陈海燕,彭补拙.耕地保护的一般原则与模式研究[J].南京大学学报(自然科学),2001,37(3):303~310.[CHEN Hai-yan,PENG Bu-zhuo.The general principles and model of cultivated land protection.Journal of Nanjing University (NaturalSciences),2001,37(3):303- 310.] [4] 庞英,张全景,叶依广.中国耕地资源利用效益研究[J].中国人口·资源与环境,2004,l4(5):32~36.[PANG Ying,ZHANGQuan-jing,YE Yi-guang.Study on the utilization benefit of cultivated land in China.China Population,Resources andEnvironment,2004,14(5):32- 36.] [5] 李兆富,杨桂山.苏州市近50 年耕地资源变化过程与经济发展关系研究[J].资源科学,2005,27(4):50~55.[LI Zhao-fu,YANG Gui-shan.Correlation analysis between cultivated land use change and economic development in Suzhou city overthe past 50 years.Resources Science,2005,27(4):50- 55.] [6] 檀满枝,陈杰,张学雷.基于RS 和GIS 苏州市近20 年来城镇扩展对土壤资源的影响研究[J].土壤,2004,36(6):621~625.[TAN Man-zhi,CHEN Jie,ZHANG Xue-lei.RS- and GIS-based assessment of impact of urbanization on soil resources inSuzhou city in the last 20 years.Soils,2004,36(6):621- 625.] [7] 高中贵,彭补拙,喻建华,等.经济发达区土地利用变化对土壤性质的影响———以江苏省昆山市为例[J].自然资源学报,2005,20 (1):44~51.[GAO Zhong-gui,PENG Bu-zhuo,YU Jian-hua,et al.Effect of land use changes on soil conditions inthe developed areas:a ease of Kunshan in Jiangsu province.Journal of Natural Resources,2005,20(1):44- 51.] [8] 孔祥斌,张凤荣,姜广辉,等.国外农用地保护对北京市耕地保护的启示[J].中国土地科学,2005,19(5):50~54.[KONGXiang-bin,ZHANG Feng-rong,JIANG Guang-hui,et al.Inspiration of foreign experience on arable land protection of Beijing.China Land Science,2005,19(5):50- 54. ] [9] 陈百明,张凤荣.中国土地可持续利用指标体系的理论与方法[J].自然资源学报,2001,16(3):197~203.[CHEN Bai-ming,ZHANG Feng-rong.Theory and methodology for sustainable land use indicator system in China.Journal of NaturalResources,2001,16(3):197- 203.] [10] Tisdell C.Economic indicators to assess the sustainability of conservation farming projects:an evaluation[J].Agriculture Ecosystemsand Environment,1996,(57):117- 131. [11] Berroteran J,Zinck A.Criteria and Indicators of Agricultural Sustainability at National Level.Geo-Information for Sustainable LandManagement[Z].ISSS/ITC,Enschede, Netherlands,1997. [12] Steiner F.The rise of the agricultural land evaluation and sit assessment system in the malted state [J].Landscape and UrbanPlanning,1987,(14):l83- 199. [13] 倪绍祥.近10 年来中国土地评价研究的进展[J].自然资源学报,2003,18(6):672~683.[NI Shao-xiang.Progress in theresearch on land evaluation in the last ten years.Journal of Natural Resources,2003,18(6):672- 683.] [14] 傅伯杰.土地可持续利用评价的指标体系与方法[J].自然资源学报,1997,12(2):112~118.[FU Bo-jie.Indicator system andevaluation method of sustainable land use.Journal of Natural Resources,1997,12(2):112- 118.] [15] FAO.FESLM:An international framework evaluating sustainable land management[R].World Soil Resources Report 73.1993. [16] 冷疏影,李秀彬.土地质量指标体系国际研究的新进展[J].地理学报,1999,54(2):177~181.[LENG Shu-ying,LI Xiu-bin.New progress of international study on land quality indicators (LQIs).Acta Geographica Sinica,1999,54(2):177- 181.]