Biomass Allocation Patterns and Estimation Model of Five Desert Shrub Species in West Ordos Region

doi:10.7522/j.issn.1000-694X.2015.00201

JOURNAL OF DESERT RESEARCH ›› 2017, Vol. 37 ›› Issue (1): 100-108.DOI: 10.7522/j.issn.1000-694X.2015.00201

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Biomass Allocation Patterns and Estimation Model of Five Desert Shrub Species in West Ordos Region

Dang Xiaohong^1,3, Gao Yong², Meng Zhongju², Gao Junliang⁴, Wang Shan¹, Bao Lei⁵, Yu Xinchun⁴, Wang Zhenyi¹, Wang Zeyu¹

1. Desert Science and Engineering College, Inner Mongolia Agricultural University, Hohhot 010018, China;
2. Wind Erosion Key Laboratory of Central and Local Government, Inner Mongolia Agricultural University, Hohhot 010018, China;
3. Inner Mongolia Hangjin Desert Ecological Position Research Station, Ordos 017400, Inner Mongolia, China;
4. Experimental Center of Desert Forestry, Chinese Academy of Forestry, Bayannur 015200, Inner Mongolia, China;
5. Urban and Rural Planning Management Center in Tongliao City, Tongliao 028000, Inner Mongolia, China

Received:2015-11-18 Revised:2015-12-26 Online:2017-01-20 Published:2017-01-20

Abstract

Abstract: In this paper, the main desert shrub species: Ammopiptanthus mogolicus, Tetraena mongolica, Zygophyllum xanthoxylum, Reaumuria songarica, Helianthemum songaricum shrub were taken as the research objects in west Ordos region, Inner Mongolia autonomous region, China. The average standard shrub harvest method was used and each part (branch, leaves and roots) biomass of shrub was measured in field. Shrub height (H) combined respectively by crown area(C) as CH and diameter (D) as D²H was used as independent variable to establish the biomass model. The optimal models were selected according to the largest determination coefficient (R²), the smallest standard error of estimate (SEE) and significance level of F test. The results showed that the differences among the dry/fresh weight ratio of single shrub and the differences among parts of shrub reached a significant level (P<0.05).The differences among root-shoot ratio of five shrub species reached a significant level (P<0.05). The root-shoot ratio of five shrub species was respectively that Reaumuria songarica was 1.05, Zygophyllum xanthoxylum was 1.01, Helianthemum songaricum was 0.92, Ammopiptanthus mogolicus was 0.90, Tetraena mongolica was 0.49. The roots and branches were main contributors to total biomass of desert shrubs and the proportion of roots and branches biomass to total biomass reached above 80%.With the increase of root diameter class, the root biomass was increasing. The R² value of single shrub biomass models were all more than 0.85 and reached a significant level (P<0.05). The prediction accuracy of five desert shrubs' biomass models were good. The important basic data was provided by this research results and theoretical basics for the response of shrub productivity, carbon storage and carbon cycle to global climate changes in desert area of western China.

Key words: root-to-shoot ratio, biomass estimation model, allocation patterns, desert shrub, Ordos

CLC Number:

S718.55
Q149

Dang Xiaohong, Gao Yong, Meng Zhongju, Gao Junliang, Wang Shan, Bao Lei, Yu Xinchun, Wang Zhenyi, Wang Zeyu. Biomass Allocation Patterns and Estimation Model of Five Desert Shrub Species in West Ordos Region[J]. JOURNAL OF DESERT RESEARCH, 2017, 37(1): 100-108.

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Biomass Allocation Patterns and Estimation Model of Five Desert Shrub Species in West Ordos Region

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