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Guojun Sun
State Key Laboratory of Grassland Agro-Ecosystem, Institute of Arid Agroecology, and School of Life Sciences, Lanzhou University, Lanzhou 730000, China

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Journal article
Published: 23 March 2021 in Sustainability
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Quantitatively estimating the grazing intensity (GI) effects on vegetation in semiarid hilly grassland of the Loess Plateau can help to develop safe utilization levels for natural grasslands, which is a necessity of maintaining livestock production and sustainable development of grasslands. Normalized difference vegetation index (NDVI), field vegetation data, and 181 days (one goat per day) of GPS tracking were combined to quantify the spatial pattern of GI, and its effects on the vegetation community structure. The spatial distribution of GI was uneven, with a mean value of 0.50 goats/ha, and 95% of the study area had less than 1.30 goats/ha. The areas with utilization rates of rangeland (July) lower than 45% and 20% made up about 95% and 60% of the study area, respectively. Grazing significantly reduced monthly aboveground biomass, but the grazing effects on plant growth rate were complex across the different plant growth stages. Grazing impaired plant growth in general, but the intermediate GI appeared to facilitate plant growth rate at the end of the growing seasons. Grazing had minimal relationship with vegetation community structure characteristics, though Importance Value of forbs increased with increasing GI. Flexibility in the number of goats and conservatively defining utilization rate, according to the inter-annual variation of utilization biomass, would be beneficial to achieve ecologically healthy and economically sustainable GI.

ACS Style

Hua Cheng; Baocheng Jin; Kai Luo; JiuYing Pei; Xueli Zhang; Yonghong Zhang; Jiaqi Tang; Qin Yang; Guojun Sun. Vegetation Response to Goats Grazing Intensity in Semiarid Hilly Grassland of the Loess Plateau, Lanzhou, China. Sustainability 2021, 13, 3569 .

AMA Style

Hua Cheng, Baocheng Jin, Kai Luo, JiuYing Pei, Xueli Zhang, Yonghong Zhang, Jiaqi Tang, Qin Yang, Guojun Sun. Vegetation Response to Goats Grazing Intensity in Semiarid Hilly Grassland of the Loess Plateau, Lanzhou, China. Sustainability. 2021; 13 (6):3569.

Chicago/Turabian Style

Hua Cheng; Baocheng Jin; Kai Luo; JiuYing Pei; Xueli Zhang; Yonghong Zhang; Jiaqi Tang; Qin Yang; Guojun Sun. 2021. "Vegetation Response to Goats Grazing Intensity in Semiarid Hilly Grassland of the Loess Plateau, Lanzhou, China." Sustainability 13, no. 6: 3569.

Book chapter
Published: 26 January 2014 in Advances in Intelligent Systems and Computing
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In this study, it gets the distribution of suitable planting areas for soybean by taking the soybean, one of the Chinese major food crops, as the object of study, adopting the multi-criteria evaluation (MCE) method, combining the climate, soil and crop growing conditions, and making use of the geographical information system (GIS) technology. The time zone for future climate chosen in this study is between 2071 and 2100. This chapter gets the distribution of suitable planting areas for soybean in the future presuming that the sunlight, soil, topography, and other factors are the same as those between 1971 and 2000 while the precipitation (PRE) and temperature change. In addition, it has compared it with the suitable planting areas at present. The results show that under the future climate conditions, the most suitable planting areas for spring soybean mainly concentrate in Inner Mongolia near to Jilin as well as the southeast of Gansu and southern Ningxia. Compared with the former suitable planting areas, the overall most suitable planting areas for spring soybean is moving to northwest. Under the future climate conditions, the total suitable planting area for Chinese spring soybean is 5,957,960 km2, taking 79.35 % of the total area. Under the future climate conditions, the most suitable planting area for summer soybean mainly concentrate in western Jilin, western Liaoning, part of Hebei, Beijing, eastern Shandong, southern Jiangsu, Zhejiang, central of Fujian, part of Anhui, southern Hunan, northern Guangxi, southeast of Guizhou, Chongqing, Hubei, and part of Shanxi. The most suitable planting areas for summer soybean are scattered without obvious regularity and extend to Liaoning, Jilin, and northern Hebei to the north and to Shandong peninsula to the east and to the Yangtze River region to the south. The total suitable planting area of summer soybean is 6,118,013 km2 taking 81.47 % of the total.

ACS Style

Wen-Ying He; Le-Le Wang; Xiao-Li Luo; Guo-Jun Sun. The Trend of GIS-Based Suitable Planting Areas for Chinese Soybean Under the Future Climate Scenario. Advances in Intelligent Systems and Computing 2014, 325 -338.

AMA Style

Wen-Ying He, Le-Le Wang, Xiao-Li Luo, Guo-Jun Sun. The Trend of GIS-Based Suitable Planting Areas for Chinese Soybean Under the Future Climate Scenario. Advances in Intelligent Systems and Computing. 2014; ():325-338.

Chicago/Turabian Style

Wen-Ying He; Le-Le Wang; Xiao-Li Luo; Guo-Jun Sun. 2014. "The Trend of GIS-Based Suitable Planting Areas for Chinese Soybean Under the Future Climate Scenario." Advances in Intelligent Systems and Computing , no. : 325-338.

Journal article
Published: 10 March 2010 in Pedosphere
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ACS Style

Xun Liu; Feng-Min Li; Da-Qian Liu; Guo-Jun Sun. Soil Organic Carbon, Carbon Fractions and Nutrients as Affected by Land Use in Semi-Arid Region of Loess Plateau of China. Pedosphere 2010, 20, 146 -152.

AMA Style

Xun Liu, Feng-Min Li, Da-Qian Liu, Guo-Jun Sun. Soil Organic Carbon, Carbon Fractions and Nutrients as Affected by Land Use in Semi-Arid Region of Loess Plateau of China. Pedosphere. 2010; 20 (2):146-152.

Chicago/Turabian Style

Xun Liu; Feng-Min Li; Da-Qian Liu; Guo-Jun Sun. 2010. "Soil Organic Carbon, Carbon Fractions and Nutrients as Affected by Land Use in Semi-Arid Region of Loess Plateau of China." Pedosphere 20, no. 2: 146-152.

Conference paper
Published: 09 April 2009 in Collaboration in a Hyperconnected World
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ACS Style

Huiming Liu; Fengmin Li; Guojun Sun; Yu Yang. Land-Use Change Dynamics and Cluster Analysis of Agricultural Structure in The Zuli River Basin in Recent 20 Years. Collaboration in a Hyperconnected World 2009, 49 -58.

AMA Style

Huiming Liu, Fengmin Li, Guojun Sun, Yu Yang. Land-Use Change Dynamics and Cluster Analysis of Agricultural Structure in The Zuli River Basin in Recent 20 Years. Collaboration in a Hyperconnected World. 2009; ():49-58.

Chicago/Turabian Style

Huiming Liu; Fengmin Li; Guojun Sun; Yu Yang. 2009. "Land-Use Change Dynamics and Cluster Analysis of Agricultural Structure in The Zuli River Basin in Recent 20 Years." Collaboration in a Hyperconnected World , no. : 49-58.

Conference paper
Published: 09 April 2009 in Lecture Notes in Control and Information Sciences
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ACS Style

Fan Wan; Zhen Wang; Fengmin Li; Huhua Cao; Guojun Sun. Gis-Based Crop Support System For Common Oatand Naked Oat in China. Lecture Notes in Control and Information Sciences 2009, 209 -221.

AMA Style

Fan Wan, Zhen Wang, Fengmin Li, Huhua Cao, Guojun Sun. Gis-Based Crop Support System For Common Oatand Naked Oat in China. Lecture Notes in Control and Information Sciences. 2009; ():209-221.

Chicago/Turabian Style

Fan Wan; Zhen Wang; Fengmin Li; Huhua Cao; Guojun Sun. 2009. "Gis-Based Crop Support System For Common Oatand Naked Oat in China." Lecture Notes in Control and Information Sciences , no. : 209-221.