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[1]SHI Yang-yang,CHEN Yun-ming,ZHANG Guang-hui,et al.Investigation into the Species Diversity and Biomass of Plants in the Abandoned Farmlands with Different Restoration Years[J].Research of Soil and Water Conservation,2012,19(06):36-40,44.

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Investigation into the Species Diversity and Biomass of Plants in the Abandoned Farmlands with Different Restoration Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 06 Page number: 36-40,44 Column: Public date: 2012-12-20

Title:: Investigation into the Species Diversity and Biomass of Plants in the Abandoned Farmlands with Different Restoration Years

Author(s):: SHI Yang-yang¹, CHEN Yun-ming^1,2, ZHANG Guang-hui^2,3, WANG Bing³; 1. College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China;
3. College of Geography, Beijing Normal University, Beijing 100875, China

Keywords:: conversion of cropland to forest or grass land; abandoned farmlands; species diversity; biomass; root length density

CLC:: Q149

DOI:: -

Abstract:: As one of the major ecological construction measures for comprehensive control of soil and water losses on the Loess Plateau, the implement of the ’conversion of cropland to forest or grass land’ project has greatly improved the eco-environmental condition and the vegetation coverage significantly during the past decades. It was conducted to investigate the potential effects of vegetation restoration years(3~5 a, 10 a, 18 a, 28 a, 37 a) on species diversity and biomass of plant in Zhifanggou watershed. The results indicated that indices of species richness, species diversity, community evenness and root length density in the same soil layer increased at the initial period, afterward those parameters decreased, and finally increased as the restoration age increased from 0 to 37 a. The variations in vegetation coverage and aboveground biomass followed the order: 37 a>28 a>18 a>3~5 a>10 a>0 a. Both of root biomass and root length density decreased with the increase of soil depth. The root biomass also increased with restoration years significantly.

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