干旱区生态环境知识资源中心(Arid): 喀斯特区石漠化治理对土壤养分含量及化学计量特征的影响以黔中杠寨小流域为例

Arid

	喀斯特区石漠化治理对土壤养分含量及化学计量特征的影响以黔中杠寨小流域为例
其他题名	Effects on nutrient content and stoichiometric characteristics during rocky desertification control in karst region: A case study of Gangzhai small watershed of central Guizhou Province
	赵文君 1; 李倩 2; 崔迎春 1; 侯贻菊 1; 杨滨 2; 丁访军 1; 吴鹏 1
来源期刊	中南林业科技大学学报
ISSN	1673-923X
出版年	2019
卷号	39 期号:8 页码:76-86
中文摘要	以黔中喀斯特区杠寨小流域为例,分别于2009年、2012年和2018年,对不同石漠化程度下不同工程治理措施、不同植被类型土壤的养分含量进行了动态监测,研究其化学计量特征的变化规律。结果表明:流域内土壤有机质(SOM)、全氮(TN)、全磷(TP)和全钾(TK)含量随石漠化治理年限的增加而增加,TN和 TP含量在治理后期得到了有效积累,土壤质量总体上得到了提升;不同工程治理措施下,荒山造林和封山育林其土壤养分含量表现出较大改善,而退耕还林的则恢复较慢;从非石漠化、潜在石漠化、轻度石漠化、中度石漠化到重度石漠化,土壤养分含量及化学计量特征多以非石漠化下的表现较高,但其差异(多年均值)则基本上均不显著(P > 0.05);不同植被恢复模式下,灌木林土壤养分含量的改善程度要优于乔木林。与全国不同生态系统土壤的平均水平相比,该流域土壤的C:N较高,而C:P、N:P较低,说明经过治理后土壤磷素较为丰富,有机质含量相对较高。冗余分析表明,对区域土壤养分含量和化学计量特征的解释程度依次为监测年限(41.67%) >工程措施(17.98%)>石漠化程度(15.57%)>植被类型(9.21%)。研究结果可为不同石漠化程度下不同工程治理措施、不同植被恢复模式土壤质量的演变趋势提供基础数据,为今后更科学、更有针对性地开展石漠化综合治理工作提供技术支持。
英文摘要	The Gangzhai small watershed in the karst region ofcentral Guizhou provincewas selected as a sample area, and conducted dynamically monitoring of its soil nutrient content of different vegetation types, different engineering measures under different degrees of rocky desertification in 2009, 2012 and 2018, respectively, to study the change rules of soil stoichiometric characteristics. The results showed that the contents of soil organic matter, TN, TP and TK in the basin increased with the years of treatment of rocky desertification, TN and TP contents were effective accumulated in the late stage oftreatment, and the soil quality was improved on the whole. Under different engineering measures, the soil nutrient content improved greatly during afforestation and forest closure, while the soil properties of returning cultivated land to forest were restored slowly. The soil nutrient content and stoichiometric characteristics were mostly higher under non-stony desertification, but the multi-year mean soil nutrients were not significant among non-stony desertification, potential rocky desertification, mild rocky desertification, moderate rocky desertification and severe rocky desertification (P > 0.05). Under different vegetation restoration models, the improvement of soil nutrient content of shrubbery was superior to that of arbor forest. Compared with the national average level of soil in different ecosystems, the soil C:N in the basin was higher, while C:P and N:P were lower, indicated that the soil was rich in phosphorus and organic matter was relatively high after treatment. The results of redundancy analysis showed that the interpretation degree of regional soil nutrient content and stoichiometric characteristics was successively as follows:monitoring time (41.67%) > engineering measures (17.98%) > rocky desertification degree (15.57%) > vegetation type (9.21%). The research results can provide basic data for the evolution trend of soil quality in different vegetation types restoration modes and the different engineering measures under different degrees of rocky desertification, and provide technical support for more scientific and targeted comprehensive control of rocky desertification in the future.
中文关键词	喀斯特区 ; 石漠化 ; 土壤 ; 养分含量 ; 化学计量特征
英文关键词	karst region rocky desertification soil nutrient content stoichiometric characteristics
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:6544210
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239856
作者单位	1.贵州省林业科学研究院, 贵阳, 贵州 550005, 中国; 2.贵州省水利投资(集团)有限责任公司, 贵阳, 贵州 550002, 中国
推荐引用方式 GB/T 7714	赵文君,李倩,崔迎春,等. 喀斯特区石漠化治理对土壤养分含量及化学计量特征的影响以黔中杠寨小流域为例[J],2019,39(8):76-86.
APA	赵文君.,李倩.,崔迎春.,侯贻菊.,杨滨.,...&吴鹏.(2019).喀斯特区石漠化治理对土壤养分含量及化学计量特征的影响以黔中杠寨小流域为例.中南林业科技大学学报,39(8),76-86.
MLA	赵文君,et al."喀斯特区石漠化治理对土壤养分含量及化学计量特征的影响以黔中杠寨小流域为例".中南林业科技大学学报 39.8(2019):76-86.