JOURNAL OF NATURAL RESOURCES ›› 2016, Vol. 31 ›› Issue (12): 2005-2020.doi: 10.11849/zrzyxb.20160073

• Resource Ecology • Previous Articles     Next Articles

Impact of the Grain for Green Project on the Land Use/Cover Change in the middle Yellow River

LI Yan-zhong1, 2, 3, LIU Chang-ming1, 2, LIU Xiao-mang1, 2, LIANG Kang1, 2, BAI Peng1, 2, 3, FENG Yi-xing4   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Key Laboratory of Water Cycle and Related Land Surface Processes,CAS, Beijing 100101, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. Qiannan State Land and Resources Reserve Bureau, Qiannan, 558000, China
  • Received:2016-01-19 Online:2016-12-20 Published:2016-12-20
  • Supported by:

    National NaturalScience Foundation of China, No. 41330529, 41571024 and 41501032.

Abstract:

Intense human activity can quickly change the pattern of the land use/cover, and have a significant impact on the surface parameters and hydrological elements. The middle Yellow River, a typical region of GGP, was used to detect the process and trend of LUCC and identify the impact of GGP on surface parameters and hydrological elements. The results indicated that: 1) Although GGP did not significantly changed the distribution pattern of land use, it changed the speed of land use change and the balance status of land uses. After the implementation of GGP, the bidiredictional change of land use turned to one-way change from farmland to forest and grass. 2) There were significant differences of LUCC among subbasins. Before GGP, the change speed of LUCC in the Fenhe Basin was faster than in other regions, and was in quasi-balance status. In the early period of GGP, the net change speed and total change speed in Helong region and Weihe River Basin was faster than in other regions. However, there was no significant difference of speed in the end period of GGP, and it was in unbalanced status. 3) The GGP had significantly changed the terrestrial parameters and hydrological elements. The GGP implementation resulted in the significant increase of NDVI, LAI and emissivity and decrease of albedo, especially in the Helong region. In addition, the runoff coefficient decreased significantly, while evaporation coefficient increased significantly, especially in the Helong region.

Key words: Grain for Green Project, hydrological element, land use/cover change, middle Yellow River, terrestrial parameter

CLC Number: 

  • Q948