Effects of Re-vegetation on Soil Enzyme Activities and Soil Physio-chemical Properties on Sloping-land with Purple Soils in Hengyang City

LIU Zuoyun; YANG Ning

doi:10.13961/j.cnki.stbctb.2015.02.006

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Effects of Re-vegetation on Soil Enzyme Activities and Soil Physio-chemical Properties on Sloping-land with Purple Soils in Hengyang City

- Effects of Re-vegetation on Soil Enzyme Activities and Soil Physio-chemical Properties on Sloping-land with Purple Soils in Hengyang City
- Bulletin of Soiland Water Conservation Vol. 35, Issue 2, Pages: 20-26(2015)
- 作者机构：
  
  1. 湖南环境生物职业技术学院继续教育部,湖南,衡阳,421005
  2. 湖南环境生物职业技术学院园林学院,湖南,衡阳,421005
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.02.006
  CLC：
- Published：2015
- 稿件说明：
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LIU Zuoyun, YANG Ning. Effects of Re-vegetation on Soil Enzyme Activities and Soil Physio-chemical Properties on Sloping-land with Purple Soils in Hengyang City[J]. Bulletin of Soiland Water Conservation, 2015, 35(2): 20-26.
DOI：

LIU Zuoyun, YANG Ning. Effects of Re-vegetation on Soil Enzyme Activities and Soil Physio-chemical Properties on Sloping-land with Purple Soils in Hengyang City[J]. Bulletin of Soiland Water Conservation, 2015, 35(2): 20-26. DOI： 10.13961/j.cnki.stbctb.2015.02.006.

摘要

[目的

]

研究衡阳市紫色土丘陵坡地恢复对土壤酶活性及理化性质的影响

以揭示不同恢复阶段土壤性质的变化、土壤生态系统的恢复/退化机理。[方法

]

采用时空互代方法

分析草本(Ⅰ)、灌草(Ⅱ)、灌丛(Ⅲ)和乔灌群落(Ⅳ)阶段的0-10 cm

10-20 cm和20-40 cm土层的土壤酶活性和理化性质变化。[结果

]

(1)不同恢复阶段的Patrick指数(R)、Shannon-Wiener指数(H)的大小顺序为:Ⅲ >Ⅳ >Ⅱ >Ⅰ

Simpson指数(D)排序为:Ⅰ >Ⅱ >Ⅳ >Ⅲ

Evenness指数(E)排序为:Ⅳ >Ⅲ >Ⅱ >Ⅰ

各植被地上和地下生物量均显著增加;(2)随着植被恢复过程的进行

土壤含水量(SWC)、土壤有机质(SOM)、全氮(TN)、全磷(TP)、硝态氮(NO

-N)和有效磷(AP)含量明显上升

土壤容重(SBD)、pH值及根土比(R/S)逐渐减小。随着土壤深度增加

SWC

R/S

SOM以及N

P养分等明显下降

而SBD和pH值逐渐增大;(3)随着恢复进行

脲酶(URE)、蛋白酶(PRO)、碱性磷酸酶(APE)、蔗糖酶(INV)、纤维素酶(CEL)和多酚氧化酶(PPO)活性明显上升

过氧化氢酶(CAT)活性以Ⅲ最高。除PPO和CAT外

其他土壤酶活性随土壤深度加深显著减小。[结论

]

植被恢复可改善土壤理化性质和提高土壤酶活性。

Abstract

[Objective] Study the effects of re-vegetation on soil enzyme activities and physio-chemical properties on sloping-lands with purple soils in Hengyang City

in order to reveal the change of soil property in different re-vegetation phases and the mechanism of recovery/degeneration of soil ecology.[Methods] Successional stages were postulated as those communities with different physiognomy

and in which soil samples of 0-10 cm

10-20 cm and 20-40 cm in plots of grassland(Ⅰ)

frutex and grassplot(Ⅱ)

frutex(Ⅲ)

arbor and frutex community(Ⅳ) were collected. Some soil enzyme activities and physio-chemical properties in the postulated stages of re-vegetation were assayed and illustrated.[Results] (1) Patrick richness index(R)

Shannon-Wiener index(H) were followed the order as:>Ⅳ >Ⅱ >Ⅰ

Simpson index(D):Ⅰ >Ⅱ >Ⅳ >Ⅲ

Evenness index(E):Ⅳ >Ⅲ >Ⅱ >Ⅰ.The above and under-ground biomass significantly increased along revegetation; (2) SWC(soil water content)

SOM(soil organic matter)

TN(total nitrogen)

TP(total phosphorus)

NO3--N(nitrate-nitrogen) and AP(available phosphorus) significantly increased along revegetation

whereas SBD(soil bulk density)

pH values and R/S ratio(root/soil ratio) gradually decreased. With the increase of soil depth

SWC

R/S ratio

SOM

N and P significantly decreased

SBD and pH values gradually increased; (3) The activities of URE (Urease)

PRO(protease)

APE(alk-phosphatase)

INV(invertase)

CEL(cellulase) and PPO(polyphenol oxidase) significantly increased

and the activities of CAT(catalase) was the highest in Ⅲ. With the increase of soil depth

except for PPO and CAT

the activities of the other soil enzyme activities decreased obviously.[Conclusion] Re-vegetation could improve soil physio-chemical properties and increase soil enzyme activities.

关键词

Keywords

references

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