Characteristics of Spatial Distribution of Soil Enzyme Activities in Sloping Farmland of Typical Area in Black Soil Region

ZHANG Xiao-cun; ZHENG Fen-li; WANG Bin; AN Juan

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Characteristics of Spatial Distribution of Soil Enzyme Activities in Sloping Farmland of Typical Area in Black Soil Region

- Characteristics of Spatial Distribution of Soil Enzyme Activities in Sloping Farmland of Typical Area in Black Soil Region
- Bulletin of Soiland Water Conservation Vol. 32, Issue 2, Pages: 58-61(2013)
- 作者机构：
  
  1. 陕西师范大学旅游与环境学院,陕西,西安,710062
  2. 商洛学院城乡发展与管理工程系,陕西,商洛,726000
  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
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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ZHANG Xiao-cun, ZHENG Fen-li, WANG Bin, et al. Characteristics of Spatial Distribution of Soil Enzyme Activities in Sloping Farmland of Typical Area in Black Soil Region[J]. Bulletin of Soiland Water Conservation, 2013, 32(2): 58-61.
DOI：

ZHANG Xiao-cun, ZHENG Fen-li, WANG Bin, et al. Characteristics of Spatial Distribution of Soil Enzyme Activities in Sloping Farmland of Typical Area in Black Soil Region[J]. Bulletin of Soiland Water Conservation, 2013, 32(2): 58-61. DOI：

摘要

基于对松花江流域东山沟小流域坡耕地表层0-20cm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。

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.

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