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当前位置: 首页 > 文章 > 喀斯特高原峡谷石漠化生态系统土壤C、N、P生态化学计量学特征 四川农业大学学报 2017,35 (1) 45-51
Position: Home > Articles > Soil C,N and P Stoichiometry of Rocky Desertification Ecosystems in the Karst Plateau Canyon Area Journal of Sichuan Agricultural University 2017,35 (1) 45-51

喀斯特高原峡谷石漠化生态系统土壤C、N、P生态化学计量学特征

作  者：
杜家颖;王霖娇;盛茂银;温培才
单  位：
贵州师范大学喀斯特研究院
关键词：
喀斯特;石漠化;碳氮比;碳磷比;氮磷比
摘  要：
【目的】为了揭示喀斯特高原峡谷石漠化生态系统土壤C、N、P含量生态化学计量学特征,科学支撑石漠化治理。【方法】选取西南喀斯特典型石漠化生态系统贵州贞丰--关岭花江石漠化生态系统为研究对象,开展土壤C、N、P生态化学计量特征研究。【结论】(1)石漠化生态系统土壤(0~15 cm)的C、N、P含量均值分别为(44.85±11.22)、(3.22±0.82)、(1.17±0.35)g/kg;C∶N、C∶P、N∶P比值分别为(3.17±1.35)、(43.09±16.49)、(14.01±3.62)。(2)无石漠化环境的土壤C、N含量显著高于石漠化环境土壤,但P含量无显著差异。(3)土壤C、N、P含量及比值等生态化学计量学特征受到地形、地貌、土壤母质以及成土的因素影响较大,受到植被、凋落物影响较小。研究结果为进一步阐明喀斯特石漠化生态系统C、N、P等元素生态化学计量学特征提供了工作基础,同时为科学治理石漠化提供了重要参考。
译  名：
Soil C,N and P Stoichiometry of Rocky Desertification Ecosystems in the Karst Plateau Canyon Area
作  者：
DU Jia-ying;WANG Lin-jiao;SHENG Mao-yin;WEN Pei-cai;School of Karst Science,Guizhou Normal University;National Engineering Research Center for Karst Rocky Desertification Rehabilitation;State Key Engineering Technology Research Center for Karst Rocky Desertification Rehabilitation of China;
关键词：
karst;;rocky desertification;;C∶N;;C∶P;;N∶P
摘  要：
【Objective】The aim of the study was to reveal soil C, N and P stoichiometry of rocky desertification ecosystems in the Karst Plateau canyon area,which may be helpful for effective rehabilitation of rocky desertification.【Method】In the present study,soil samples were collected from typical rocky desertification ecosystems in the Karst Plateau canyon area(Huanjiang of Zhenfeng-Guanling in Guizhou Province),soil C,N and P ecological stoichiometry were analyzed. 【Conclusion】(1) The contents of soil(0~15 cm)C,N and P of rocky desertification ecosystems were 44.85±11.22,3.22±0.82 and(1.17±0.35)g/kg,respectively. The ratios of C∶N,C∶P,and N∶P were 3.17±1.35,43.09±16.49 and14.01±3.62,respectively.(2) Soil C and N of nil rocky desertification was significant higher than those of rocky desertification but there was no significant difference in soil P content between rocky desertification and nil rocky desertification.(3) The content and ratio of soil C,N and P of karst rocky desertification ecosystems were obviously affected by soil-forming factors,such as landform,parent rock but slightly affected by vegetation and litterfall. The results noted in this study would provide bases for further researches of ecological stoichiometry in the karst rocky desertification ecosystem and provide an important reference for scientific rehabilitation of rocky desertification.

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