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DOI10.1029/2018MS001352
Explicit Representation of Grazing Activity in a Diagnostic Terrestrial Model: A Data-Process Combined Scheme
Chen, Yizhao1,2,3,4; Ju, Weimin5; Mu, Shaojie6; Fei, Xinran7; Cheng, Yuan7; Propastin, Pavel8,9; Zhou, Wei10; Liao, Cuijuan2; Chen, Luxiao11,12; Tang, Rongjun11,12; Qi, Jiaguo13; Li, Jianlong2; Ruan, Honghua1
发表日期2019
ISSN1942-2466
卷号11期号:4页码:957-978
英文摘要

Grazing activity is a fundamental behavior in pasture ecosystems and, globally, is a major disturbance that leads to destruction of terrestrial biomass. However, its impact on ecosystem C sequestration at large scales is not well understood due to its obvious anthropogenic property. In this study, we proposed a Data-Process combined Grazing Scheme (DPGS) to quantify the regional grazing impact on ecosystem C sequestration in the typical pasture ecosystem, Temperate Eurasian Steppe. First, a pixel-based livestock distribution map was generated based on fine-scale (province/prefecture) inventory data using a resource-oriented livestock distribution approach. Then the C consumption due to grazing (C-loss,C-graze) was simulated by combining a late version of a remote-sensing-based terrestrial model, the Boreal Ecosystem Productivity Simulator and the Shiyomi grazing model. The modeled regional livestock density was evaluated against the Gridded Livestock of the World data set. The DPGS was able to reproduce the spatial distribution of livestock. Because extralarge herbivores (camel and horse) were involved in the calculation, the DPGS predicts higher livestock density than the Gridded Livestock of the World data set over 70% of the region. The modeled C-loss,C-graze and its seasonal variability were validated against multiple site-based data sets. The results showed good agreements with the field observations of C-loss,C-graze. With further tests and data incorporations, this scheme has the potential to produce high-resolution data sets of livestock distribution and C-loss,C-graze and become a useful diagnostic instrument for model evaluation, parameterization, and intercomparison.


WOS研究方向Meteorology & Atmospheric Sciences
来源期刊JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/95792
作者单位1.Nanjing Forestry Univ, Coll Biol & Environm, Joint Innovat Ctr Modern Forestry Studies, Nanjing, Jiangsu, Peoples R China;
2.Nanjing Univ, Sch Life Sci, Nanjing, Jiangsu, Peoples R China;
3.Tsinghua Univ, Key Lab Earth Syst Modeling, Minist Educ, Beijing, Peoples R China;
4.Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China;
5.Nanjing Univ, Int Inst Earth Syst Sci, Nanjing, Jiangsu, Peoples R China;
6.Chinese Acad Sci, Key Lab Watershed Geog Sci, Nanjing Inst Geog & Limnol, Nanjing, Jiangsu, Peoples R China;
7.Nanjing Forestry Univ, Coll Forestry, Nanjing, Jiangsu, Peoples R China;
8.Georg August Univ Gottingen, Inst Geog, Gottingen, Germany;
9.Georg August Univ Gottingen, Busgen Inst, Dept Bioclimatol, Gottingen, Germany;
10.Chongqing Jiaotong Univ, Coll Architecture & Urban Planning, Chongqing, Peoples R China;
11.Nanjing Univ, State Key Lab Pharmaceut Biotechnol, NAILS, Sch Life Sci, Nanjing, Jiangsu, Peoples R China;
12.Nanjing Univ, Jiangsu Engn Res Ctr MicroRNA Biol & Biotechnol, NAILS, Sch Life Sci, Nanjing, Jiangsu, Peoples R China;
13.Michigan State Univ, Ctr Global Change & Earth Observat, E Lansing, MI 48824 USA
推荐引用方式
GB/T 7714
Chen, Yizhao,Ju, Weimin,Mu, Shaojie,et al. Explicit Representation of Grazing Activity in a Diagnostic Terrestrial Model: A Data-Process Combined Scheme[J],2019,11(4):957-978.
APA Chen, Yizhao.,Ju, Weimin.,Mu, Shaojie.,Fei, Xinran.,Cheng, Yuan.,...&Ruan, Honghua.(2019).Explicit Representation of Grazing Activity in a Diagnostic Terrestrial Model: A Data-Process Combined Scheme.JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS,11(4),957-978.
MLA Chen, Yizhao,et al."Explicit Representation of Grazing Activity in a Diagnostic Terrestrial Model: A Data-Process Combined Scheme".JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS 11.4(2019):957-978.
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