Ecological stoichiometry and environmental influencing factors of soil nutrients in the karst rocky desertification ecosystem, southwest China
The stoichiometry characteristics and environmental influencing factors of soil nutrients of the three typical karst rocky desertification sites in Southwest China were studied. The results showed that the average contents of soil C, N, P and K in the three typical rocky desertification sites were 4...
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| Format: | Article |
| Language: | English |
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Elsevier
2018-10-01
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| Series: | Global Ecology and Conservation |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2351989418302191 |
| _version_ | 1818560825672073216 |
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| author | Linjiao Wang Pan Wang Maoyin Sheng Jing Tian |
| author_facet | Linjiao Wang Pan Wang Maoyin Sheng Jing Tian |
| author_sort | Linjiao Wang |
| collection | DOAJ |
| description | The stoichiometry characteristics and environmental influencing factors of soil nutrients of the three typical karst rocky desertification sites in Southwest China were studied. The results showed that the average contents of soil C, N, P and K in the three typical rocky desertification sites were 45.61, 2.54, 0.79 and 3.33 g/kg, respectively. The average values of C:N, C:P, C:K, N:P, N:K and P:K were 19.56, 65.07, 23.65, 3.45, 1.32 and 0.39, respectively. The variation of soil element K was significantly higher than that of the others. There were significant differences in the soil nutrient contents or stoichiometric ratios among the different sampling sites, rocky desertification degrees, or vegetation cover ratios. There were significant nonlinear correlations among soil nutrient contents. And there were also significant nonlinear correlations between soil nutrient contents and their stoichiometric ratios. Precipitation, temperature, rock outcrops, and land cover were the main environmental influencing factors for the stoichiometric characteristics of soil nutrients in the karst rocky desertification ecosystem. Results of the present study have important significance for the theory improvement of soil ecological stoichiometry and the scientific rehabilitation and control of the karst rocky desertification in Southwest China. Keywords: Ecological stoichiometry, Karst, Rocky desertification, Soil nutrients, Influencing factors |
| first_indexed | 2024-12-14T00:43:14Z |
| format | Article |
| id | doaj.art-80d5fcf8e6984e04be01ae574e002ad0 |
| institution | Directory Open Access Journal |
| issn | 2351-9894 |
| language | English |
| last_indexed | 2024-12-14T00:43:14Z |
| publishDate | 2018-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Global Ecology and Conservation |
| spelling | doaj.art-80d5fcf8e6984e04be01ae574e002ad02022-12-21T23:24:15ZengElsevierGlobal Ecology and Conservation2351-98942018-10-0116Ecological stoichiometry and environmental influencing factors of soil nutrients in the karst rocky desertification ecosystem, southwest ChinaLinjiao Wang0Pan Wang1Maoyin Sheng2Jing Tian3National Engineering Research Centre for Karst Rocky Desertification Control, Guizhou Normal University, Guiyang, 550001, People's Republic of ChinaNational Engineering Research Centre for Karst Rocky Desertification Control, Guizhou Normal University, Guiyang, 550001, People's Republic of China; Guizhou Engineering Laboratory for Karst Rocky Desertification Control and Derivative Industry, Guiyang, 550001, People's Republic of ChinaNational Engineering Research Centre for Karst Rocky Desertification Control, Guizhou Normal University, Guiyang, 550001, People's Republic of China; Guizhou Engineering Laboratory for Karst Rocky Desertification Control and Derivative Industry, Guiyang, 550001, People's Republic of China; Corresponding author. National Engineering Research Centre for Karst Rocky Desertification Control, Guizhou Normal University, Guiyang, 550001, PR China.National Engineering Research Centre for Karst Rocky Desertification Control, Guizhou Normal University, Guiyang, 550001, People's Republic of ChinaThe stoichiometry characteristics and environmental influencing factors of soil nutrients of the three typical karst rocky desertification sites in Southwest China were studied. The results showed that the average contents of soil C, N, P and K in the three typical rocky desertification sites were 45.61, 2.54, 0.79 and 3.33 g/kg, respectively. The average values of C:N, C:P, C:K, N:P, N:K and P:K were 19.56, 65.07, 23.65, 3.45, 1.32 and 0.39, respectively. The variation of soil element K was significantly higher than that of the others. There were significant differences in the soil nutrient contents or stoichiometric ratios among the different sampling sites, rocky desertification degrees, or vegetation cover ratios. There were significant nonlinear correlations among soil nutrient contents. And there were also significant nonlinear correlations between soil nutrient contents and their stoichiometric ratios. Precipitation, temperature, rock outcrops, and land cover were the main environmental influencing factors for the stoichiometric characteristics of soil nutrients in the karst rocky desertification ecosystem. Results of the present study have important significance for the theory improvement of soil ecological stoichiometry and the scientific rehabilitation and control of the karst rocky desertification in Southwest China. Keywords: Ecological stoichiometry, Karst, Rocky desertification, Soil nutrients, Influencing factorshttp://www.sciencedirect.com/science/article/pii/S2351989418302191 |
| spellingShingle | Linjiao Wang Pan Wang Maoyin Sheng Jing Tian Ecological stoichiometry and environmental influencing factors of soil nutrients in the karst rocky desertification ecosystem, southwest China Global Ecology and Conservation |
| title | Ecological stoichiometry and environmental influencing factors of soil nutrients in the karst rocky desertification ecosystem, southwest China |
| title_full | Ecological stoichiometry and environmental influencing factors of soil nutrients in the karst rocky desertification ecosystem, southwest China |
| title_fullStr | Ecological stoichiometry and environmental influencing factors of soil nutrients in the karst rocky desertification ecosystem, southwest China |
| title_full_unstemmed | Ecological stoichiometry and environmental influencing factors of soil nutrients in the karst rocky desertification ecosystem, southwest China |
| title_short | Ecological stoichiometry and environmental influencing factors of soil nutrients in the karst rocky desertification ecosystem, southwest China |
| title_sort | ecological stoichiometry and environmental influencing factors of soil nutrients in the karst rocky desertification ecosystem southwest china |
| url | http://www.sciencedirect.com/science/article/pii/S2351989418302191 |
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