天天酷跑刷英雄传
當前位置:文檔之家 > 雪災對毛竹林土壤呼吸與微生物生物量碳的影響_1

雪災對毛竹林土壤呼吸與微生物生物量碳的影響_1

第34卷第3期

2010年5月

南京林業大學學報(自然科學版)Journal of Nanjing Forestry University (Natural Science Edition )Vol.34,No.3May ,2010

http ://http://www.ypamx.icu/doc/0f8c0fac3169a4517623a35f.html 收稿日期:2009-03-22修回日期:2009-08-27

基金項目:國家自然科學基金項目(30670313);國家林業局林業公益性行業科研專項項目(200804006;200704005/wb02)

作者簡介:劉勝(1983—),碩士生。*阮宏華(通信作者),教授。E-

mail :[email protected]://www.ypamx.icu/doc/0f8c0fac3169a4517623a35f.html 。引文格式:劉勝,丁九敏,徐涵湄,等.雪災對毛竹林土壤呼吸與微生物生物量碳的影響[

J ].南京林業大學學報:自然科學版,2010,34(3):126-130.雪災對毛竹林土壤呼吸與微生物生物量碳的影響

勝1,丁九敏1,2,徐涵湄1,汪家社3,徐自坤3,阮宏華1*(1.南京林業大學,江蘇省林業生態工程重點實驗室,江蘇南京210037;2.連云港職業技術學院,江蘇連云港222006;3.福建武夷山國家級自然保護區管理局,福建武夷山354315)

摘要:2008年中國南方雪災是對森林生態系統過程一次極大的自然干擾。為研究雪災對土壤主要生態因子和土壤生態學過程的影響,筆者對福建武夷山受雪災干擾的毛竹林生態系統受災程

度進行了調查。依據毛竹林分的受災程度,

分為重度、中度和輕度3種類型。結果顯示:雪災后,重度、中度與輕度受災毛竹林的受損率分別為43.7%、

21.8%和10.3%;因雪災輸入林地地表的生物量分別為2.21、

1.04和0.60kg /m 2;受災程度不同對毛竹林生態系統的主要生態因子影響有顯著的差異。林分郁閉度分別與土壤含水率、

土壤呼吸、土壤溫度、微生物生物量碳、受損率、

雪災后輸入地表生物量等呈顯著負相關;雪災后輸入地表生物量分別與微生物生物量碳、土壤溫度、受損率、土壤呼吸呈顯著正相關。不同程度受災林分間的土壤呼吸和微生物生物量碳有顯著差異性,林冠的打開和大量凋落物、粗木質殘體碎屑的輸入直接或間接導致了土壤含水率、土壤溫度、土壤呼吸、微生物生物量碳等生態因子的變化,這些變化將改變竹林生態系統的生物學與生態學過程。

關鍵詞:雪災;毛竹林;土壤呼吸;土壤微生物生物量碳;武夷山

中圖分類號:S714;X43文獻標志碼:A 文章編號:1000-2006(2010)03-0126-05

The influence of snow storm on soil respiration and soil microbial biomass carbon of Phyllostachys heterocycla cv.pubescens forest

LIU Sheng 1,DING Jiu-min 1,2,XU Han-mei 1,WANG Jia-she 3,XU Zi-kun 3,RUAN Hong-hua 1*

(1.Jiangsu Key Laboratory of Forest Ecological Engineering ,Nanjing Forestry University ,Nanjing 210037,China ;

2.Lianyungang Technical College ,Lianyungang 222006,China ;

3.Administrative Bureau of

Wuyishan National Nature Reserve ,Wuyishan 354315,China )

Abstract :The 2008snow storm in southern China was a huge natural disturbance to the forest ecosystem.We conducted an experiment in Phyllostachys heterocycla cv.pubescens forest in Wuyi Mountain to understand the influence of snow storm on major soil ecological factors and soil ecological processes.We divided the damage level of phyllostachys hetero-cycla cv.pubescens forest cause by the snow storm into three types i.e.heavy ,middle and low level.The rate of dam-

aged bamboo in heavy ,middle and low level was 43.7%,

21.8%,10.3%,respectively.The aboveground biomass input to the ground caused by the snow storm was 2.21,

1.04and 0.60kg /m 2,respectively.The canopy closure was significantly negatively correlated with soil moisture ,soil respiration ,soil temperature and soil microbial biomass car-bon ,respectively soil microbial biomass carbon ,soil temperature and soil respiration were significantly correlated with the aboveground biomass loss.There were significant difference in soil respiration and microbial biomass carbon among different damage levels.The open of the canopy and the input of the litterfall and woody debris to
the floor may lead to the changes of soil moisture ,soil temperature ,soil respiration ,and soil microbial biomass carbon ,and might alter the biological and ecological processes of phyllostachys heterocycla cv.pubescens forest.

1.04and 0.60kg /m 2,respectively.The canopy closure was significantly negatively correlated with soil moisture ,soil respiration ,soil temperature and soil microbial biomass car-bon ,respectively soil microbial biomass carbon ,soil temperature and soil respiration were significantly correlated with the aboveground biomass loss.There were significant difference in soil respiration and microbial biomass carbon among different damage levels.The open of the canopy and the input of the litterfall and woody debris to the floor may lead to the changes of soil moisture ,soil temperature ,soil respiration ,and soil microbial biomass carbon ,and might alter the biological and ecological processes of phyllostachys heterocycla cv.pubescens forest.

Key words :snow storm ;phyllostachys heterocycla cv.pubescens forest ;soil respiration ;soil microbial biomass carbon ;Wuyi Mountain

天天酷跑刷英雄传