杉木林采伐迹地连栽和撂荒对林地土壤养分与酶活性的影响

doi:10.11707/j.1001-7488.20091211

林业科学 ›› 2009, Vol. 12 ›› Issue (12): 65-71.doi: 10.11707/j.1001-7488.20091211

杉木林采伐迹地连栽和撂荒对林地土壤养分与酶活性的影响

方晰^1,2,3田大伦^1,2,3 秦国宣^1,3 项文化^1,2,3

1.中南林业科技大学生态研究室长沙 410004； 2.南方林业生态应用技术国家工程实验室长沙 410004；3.城市森林生态湖南省重点实验室长沙 410004

收稿日期:2009-02-18 修回日期:1900-01-01 出版日期:2009-12-25 发布日期:2009-12-25
基金资助:

Nutrient Contents and Enzyme Activities in the Soil of Cunninghamia lanceolata Forests of Successive Rotation and Natural Restoration with Follow after Clear-Cutting

Fang Xi^1,2,3,Tian Dalun^1,2,3,Qin Guoxuan^1,2,Xiang Wenhua^1,2,3

1.Research Section of Ecology，Central South University of Forestry and Technology Changsha 410004； 2.State Key Laboratory of Ecological Applied Technology in Forest Area of South China Changsha 410004； 3.Key Laboratory of Urban Forest Ecology of Hunan Province Changsha 410004

Received:2009-02-18 Revised:1900-01-01 Online:2009-12-25 Published:2009-12-25
Supported by:

摘要/Abstract

摘要：

研究湖南会同连栽第2代杉木人工纯林和撂荒对第1代杉木人工林采伐迹地土壤养分与酶活性的影响。结果表明：0～30 cm和30～60 cm土层中，撂荒地土壤有机质、养分含量普遍高于连栽杉木人工林地，且腐殖质碳、有效磷含量的差异均达到极显著水平（P<0.01），全磷含量在0～30 cm土层中的差异达到显著水平（P＜0.05）。0～30 cm土层中，撂荒地过氧化氢酶活性极显著高于连栽杉木人工林地（P＜0.01），磷酸酶、脲酶、蔗糖酶活性均显著高于连栽杉木人工林地（P＜0.05），30～60 cm土层中，撂荒地过氧化氢酶、蔗糖酶活性也显著高于杉木人工林地（P<0.05），磷酸酶和脲酶活性也高于连栽杉木人工林地，但差异不显著（P＞0.05）。林地土壤过氧化氢酶、磷酸酶、脲酶、蔗糖酶活性与土壤有机质、养分含量之间均呈较好的正相关，而且与水解氮、速效磷、腐殖质碳的相关性高于其与有机质的相关性。主成分分析表明，土壤酶活性在林地土壤质量体系中扮演着重要角色，其中脲酶、蔗糖酶和磷酸酶可作为林地土壤质量评价的指标。撂荒具有更好地恢复土壤养分含量和酶活性的能力，对维持杉木人工林地持续生产力有着重要作用。

关键词: 湖南会同, 杉木人工林, 采伐迹地, 连栽, 撂荒, 土壤养分, 酶活性

Abstract:

Effects of successive rotation and natural restoration after fallow on forest soil nutrient contents and enzyme activities in the first generation Chinese Fir (Cunninghamia lanceolata) forests after clear-cutting were studied at Huitong Ecological Station, Hunan Province. Results showed that soil organic matter and nutrient contents of the naturally restored forests after fallow were generally higher than those of successive rotation of Chinese fir plantation in 0～30 cm and 30～60 cm layers. The differences in available phosphorus and humus carbon content were extremely significant, and the difference in total phosphorus content in 0～30 cm soil layers was significant. In the natural restoration forest, the activities of phosphatase, uresa and sucrase were significantly higher than those in successive rotation of Chinese fir plantation, and hydrogen peroxidase activity in 0～30 cm soil layers was extremely significant higher than that of the successive rotation forest, In 30～60 cm soil layers, the activities of Hydrogen peroxidase and sucrase in the natural restoration forest were significantly higher that in the successive rotation forest, however there was no significant difference in the activities of phosphatase and uresa. The activities of hydrogen peroxidase, phosphatase, uresa and sucrase had an extreme positive correlations with soil organic matter and nutrient contents, among which the correlations with hydrolysable N, available P and humus carbon were more significant than those with organic matter. Principal component analyses also indicated that soil enzyme activities played an important role in soil quality of forest ecosystem, of which the activities of phosphatase, uresa and sucrase could be used as indicators of soil quality in forest ecosystem. Natural restoration after fallow was able to restore soil nutrient contents and enzyme activities, and played an important role in maintaining sustainable forest-land productive forces of Chinese fir plantation.

Key words: Huitong, Hunan Province, Chinese Fir plantation, successive rotation, clear-cutting forestland, natural restoration after fallow, soil nutrients, enzyme activities

中图分类号:

方晰;田大伦;秦国宣;项文化;. 杉木林采伐迹地连栽和撂荒对林地土壤养分与酶活性的影响[J]. 林业科学, 2009, 12(12): 65-71.

Fang Xi;;Tian Dalun;;Qin Guoxuan;Xiang Wenhua;. Nutrient Contents and Enzyme Activities in the Soil of Cunninghamia lanceolata Forests of Successive Rotation and Natural Restoration with Follow after Clear-Cutting[J]. Scientia Silvae Sinicae, 2009, 12(12): 65-71.

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杉木林采伐迹地连栽和撂荒对林地土壤养分与酶活性的影响

Nutrient Contents and Enzyme Activities in the Soil of Cunninghamia lanceolata Forests of Successive Rotation and Natural Restoration with Follow after Clear-Cutting

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