Resources Science ›› 2015, Vol. 37 ›› Issue (10): 1953-1961.

• Orginal Article • Previous Articles     Next Articles

Effect of ecological construction projects on land use/cover changes in the Poyang Lake area

SUN Chuanzhun1,2(), ZHEN Lin2(), WANG Chao2,3, DU Bingzhen4, HU Jie2,3, LI Peng2   

  1. 1. College of Public Administration,South China Agricultural University,Guangzhou 510642,China
    2. Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China
    3. Graduate University of Chinese Academy of Sciences,Beijing 100049,China
    4. Holland Wageningen University,Wageningen 6700 HB, Holland
  • Received:2014-04-16 Revised:2015-06-01 Online:2015-10-25 Published:2015-10-25

Abstract:

Ecological construction projects can quickly change land use and cover (LUC)to a large extent. This paper took three typical villages in Poyang Lake area as our research objects and used high-resolution remote sensing images for land use and cover field study. We shaped the village LUC map for the years 2000 and 2013,before and after ecological construction projects. Based on this information and household questionnaires we analyzed land use/cover change (LUCC)in the three typical villages via LUCC indexes,such as land use degree Index,LUCC importance Index,and the forest and grass cover rate index. Our results shows that from 2000-2013 under a context of ecological construction projects and farmland abandonment,the land use degree decreased and the forest and grass cover rate increased. Different types of ecological projects had different impacts on LUCC. The LUCC importance index caused by returning farmland to lake is relatively high,and this project had a big influence on land use degree index and the forest and grass cover rate index. The LUCC importance index caused by the One Big Target and Four Little Target project is also high; the single One Big Target and Four Little Target project had little impact on land use degree and forest and grass cover rate. However,the combination of this project and returning farmland to lake made the land use degree decrease and forest and grass cover rate increase. The LUCC importance index caused by retuning farmland to forest is relative low,but it had a big influence on land use degree decline and the forest and grass cover rate.

Key words: land use/cover change, remote sensing survey in villages, household questionnaire, Poyang Lake area