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| 黑土区典型坡耕地土壤酶活性空间分布特征研究 | |
| 引用本文： | 张孝存,郑粉莉,王彬,安娟.黑土区典型坡耕地土壤酶活性空间分布特征研究[J].水土保持通报,2013,33(2):58-61. |
| 作者姓名： | 张孝存 郑粉莉 王彬 安娟 |
| 作者单位： | 1. 陕西师范大学旅游与环境学院,陕西西安710062;商洛学院城乡发展与管理工程系,陕西商洛726000 2. 西北农林科技大学 资源环境学院,陕西杨凌712100;中国科学院水利部水土保持研究所 黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100 3. 西北农林科技大学 资源环境学院,陕西杨凌,712100 4. 中国科学院水利部水土保持研究所 黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌,712100 |
| 基金项目： | 国家重点基础(973)研究发展计划项目"不同类型区土壤侵蚀过程与机理" |
| 摘 要： | 基于对松花江流域东山沟小流域坡耕地表层0-20 cm土壤酶活性和养分含量分析,研究了东北黑土区典型坡耕地土壤酶活性空间分布特征及其影响因素.结果表明,小流域下游的土壤转化酶、脲酶、碱性磷酸酶活性均高于流域上游和中游；坡面侵蚀区3种土壤酶活性均低于坡面沉积区；土壤酶活性沿坡长分布呈现坡顶较高—坡中低—坡下高的变化趋势,与坡面土壤侵蚀强度相对应.3种土壤酶活性之间呈极显著相关关系.土壤酶活性空间分布特点与土壤侵蚀强度空间分布趋势呈现相一致的规律,表明土壤侵蚀降低了土壤酶活性. |
| 关 键 词： | 土壤酶活性 空间分布 土壤侵蚀 坡耕地 黑土 |
| 修稿时间： | 2012/12/31 0:00:00 |
Characteristics of Spatial Distribution of Soil Enzyme Activities in Sloping Farmland of Typical Area in Black Soil Region |
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| ZHANG Xiao-cun,ZHENG Fen-li,WANG Bin and AN Juan.Characteristics of Spatial Distribution of Soil Enzyme Activities in Sloping Farmland of Typical Area in Black Soil Region[J].Bulletin of Soil and Water Conservation,2013,33(2):58-61. | |
| Authors: | ZHANG Xiao-cun ZHENG Fen-li WANG Bin and AN Juan |
| Institution: | College of Tourism and Environment, Shaanxi Normal University, Xi'an, Shaanxi 710062, China;Department of Urban and Rural Development Management Engineering of Shangluo University, Shangluo, Shaanxi 726000, China;College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China;The State Key Laboratory of Soil Erosion and Dry land Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resource, Yangling, Shaanxi 712100, China;College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China;The State Key Laboratory of Soil Erosion and Dry land Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resource, Yangling, Shaanxi 712100, China |
| Abstract: | Soil enzyme and soil nutrient were analyzed to investigate spatial distribution and the influencingfactors for soil enzyme activities in surface soil(0-20cm)of sloping farmland in Dongshan watershed,whichis belonging to the northeast black soil area.The results showed that converting enzyme,urease,alkalinephosphatase activity were higher in lower reaches than in upper and middle reaches.The three soil enzymeactivities on the slopes in the erosional area were less than those in the depositional area.Soil enzyme activities varied significantly with regard to slop positions;it was relatively high on the crest,low in middle slope,and the highest in the foot slope,corresponding to soil erosion intensity.The converting enzyme,urease,alkaline phosphatase activities were correlated positively with each other.The spatial distribution characteristics of soil enzyme activities matched that of soil erosion intensity very well on the slope and watershed.The results indicated that soil erosion reduced soil enzyme activities. |
| Keywords: | soil enzyme spatial distribution soil erosion sloping farmland black soil |
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