[1]易海燕,宫渊波,陈林武,等.岷江上游山地森林/干旱河谷交错带退耕还林后土壤养分变化和微生物分布特征[J].水土保持研究,2010,17(02):130-135.
　YI Hai-yan,GONG Yuan-bo,CHEN Lin-wu,et al.Soil Nutrient Status and Microbiological Properties in the Mountain Forests/Arid Valley Ecotone in the Upper Reaches of Minjiang River after Converting Farmland to Forest[J].Research of Soil and Water Conservation,2010,17(02):130-135.
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岷江上游山地森林/干旱河谷交错带退耕还林后土壤养分变化和微生物分布特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 17 期数: 2010年02期 页码: 130-135 栏目: 出版日期: 2010-04-20
Title:
Soil Nutrient Status and Microbiological Properties in the Mountain Forests/Arid Valley Ecotone in the Upper Reaches of Minjiang River after Converting Farmland to Forest
作者:
易海燕1, 宫渊波1, 陈林武1,2, 张敏1, 唐春香1, 黄正全1, 陈鑫1
1. 四川农业大学 长江上游林业生态工程省级重点实验室, 四川 雅安 625014;
2. 四川省林业科学研究院, 成都 610081
Author(s):
YI Hai-yan1, GONG Yuan-bo1, CHEN Lin-wu1,2, ZHANG Min1, TANG Chun-xiang1, HUANG Zheng-quan1, CHEN Xin1
1. Sichuan Agricultural University, Sichuang Key Laboratory of Ecological Forestry Engineering, Ya’an, Sichuan 625014, China;
2. Sichuan Academy of Forestry, Chengdu 610081, China
关键词:
山地森林/干旱河谷交错带; 土壤养分; 土壤微生物; 植被恢复
Keywords:
mountain forests/arid valley ecotone; soil nutrient; soil microorganism; vegetation restoration
分类号:
S152.6;S154.3
摘要:
通过实地调查与实验分析，对岷江上游山地森林/干旱河谷交错带退耕还林后土壤养分状况和微生物数量特征进行研究。结果表明：土壤有机质、全N 含量为交错带山地森林段>交错带山地森林下缘地段>干旱河谷地段；土壤全P 含量为交错带山地森林下缘地段>交错带山地森林段>干旱河谷地段；土壤pH 值为干旱河谷地段>交错带山地森林下缘地段>交错带山地森林段；土壤真菌、细菌、放线菌、氨化菌以及固氮菌的数量随海拔的升高先增多后减少，纤维素分解菌的数量随海拔的升高而增多。同时，通过对交错带山地森林下缘3种植被恢复模式研究表明，恢复植被能显著提高土壤的养分，增加微生物的数量。土壤养分和微生物数量变化均具有明显的空间层次现象，即随土层的加深呈降低的趋势。本研究区域土壤微生物数量与土壤养分密切相关。
Abstract:
Through field investigation and experiment analysis, the soil nutrient status and microbiological quantitative trait of the mountain forests/arid valley ecotone in the upper reaches of Minjiang river after converting farmland to forest was studied. The results showed that the soil organic matter and total nitrogen were in the order as the mountain forests > the lower edge of the mountain forest > the arid valley; for phosphorus as the lower edge of the mountain forest > the mountain forests > the arid valley; for soil pH as the arid valley > the lower edge of the mountain forest > the mountain forests, growing in number with the increase of soil depth. With the increase of the elevation, the numbers of fungi, bacteria, actinomycetes, ammonifiers and azotobacteria increased firstly and then reducd, while the numbers of cellulose-decomposing bacteria increased gradually. Meanwhile, through the investigation on the 3 different vegetation recovery models in the same elevation, the results showed that vegetation restoration could improve soil nutrient and increase the number of microbiological. Both the soil nutrients and microbiological properties were decreasing with the increase of soil depth. In this study, there is close correlation between soil microorganism and soil nutrient.

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备注/Memo

收稿日期:2009-10-20。
基金项目:“十一五”国家科技支撑计划重大项目（2006BAC01A11）；四川农业大学211工程创新团队项目
作者简介:易海燕（1984- ），女，四川遂宁人，硕士研究生，从事水土保持与荒漠化防治专业学习和研究。E-mail：oyiyano@163.com
通讯作者:宫渊波（1957- ），男，辽宁昌图人，博士，教授，研究方向：退化生态系统恢复。E-mail：gyb@sicau.edu.cn

更新日期/Last Update: 1900-01-01