土壤温度和水分含量对三峡库区马尾松林凋落物叶分解的影响

Abstract

Abstract:

Influences of the soil temperature and water content on the needle litter decomposition were quantified with different site conditions in Pinus massoniana plantations in Three Gorges Reservoir Area by using litter bags method. The results showed that litter needle mass remaining rate was 63.57%, 59.80%, and65.50% after 540 d exposition in 20-, 30-,and 46-year-old forest, respectively, and the litter decomposition rate in 30-year-old stand was significantly greater than that in the other two forests. There was a significant quadratic relationship between needle litter decomposition rate and soil temperature (P <0.01), but no significant linear relationship was found between the decomposition and soil mossture content (P >0.05). Furthermore, needle litter decomposition rate was significantly in a cubic function correlated with the ratio of soil moisture content to soil temperature (P <0.01). The ratio of soil water content to soil temperature was 0.91-14.99, 0.49-4.57, and 0.63-11.25 in 20-, 30-, and 46-year-olf forest, respectively. When the ratio was in a range of 0-4.0 the litters decomposed relatively fast, and with the ratio of 4.0-12.0 the decomposition was relatively slow. The initial substrate quality, including N content, C/N ratio, and C/P ratio, of the needle litter was significantly different in the three stands. The needle litter carbon content was higher in 20-and 46-year-old forest than in 30-year-old forest after 540 d exposition. Compared with 30-year-old stand, litter carbon release dynamic in 20-, 46-year-old stands had significantly higher temperature sensitivity. These results indicated that the indirect effect of soil temperature to needle litter decomposition rate was controlled by carbon release rate instead of the initial carbon content. Litters with fast carbon release, accompanied with fast needle litter decomposition, has lower temperature sensitivity, and vice versa.

Key words: needle litter decomposition, soil temperature, soil water content, substrate quality, Three Gorges Reservoir Area

CLC Number:

S718.5

Ge Xiaogai, Zeng Lixiong, Huang Zhilin, Xiao Wenfa, Tan Benwang, Zhou Benzhi. Effects of Soil Temperature and Soil Water Content to Needle Litter Leaf Decomposition of Pinus massoniana Plantations in Three Gorges Reservoir Area[J]. Scientia Silvae Sinicae, 2013, 49(9): 153-157.

References

陈鲜艳, 张强, 叶殿秀, 等. 2009. 三峡库区局地气候变化. 长江流域资源与环境, 18(1): 47-51.

程瑞梅, 肖文发. 2008. 三峡库区森林植物群落数量分类与排序. 林业科学, 44(4): 20-27.

葛晓改, 肖文发, 曾立雄, 等. 2012. 不同林龄马尾松凋落物基质质量与土壤养分的关系. 生态学报, 32(3): 852-862.

李雪峰, 韩士杰, 张岩. 2007. 降水量变化对蒙古栎落叶分解过程的间接影响. 应用生态学报, 18(2): 261-266.

李志安, 邹碧, 丁永祯, 等. 2004. 森林凋落物分解重要影响因子及其研究进展. 生态学杂志, 23(6): 77-83.

王鹏程, 姚婧, 肖文发, 等. 2009. 三峡库区森林植被分布的地形分异特征. 长江流域资源与环境, 18(6): 528-534.

汪思龙, 陈楚莹. 2010. 森林残落物生态学. 北京: 科学出版社.

肖文发, 李建文, 于长青, 等. 2000. 长江三峡库区陆生动植物生态. 重庆: 西南师范大学出版社.

徐小锋, 田汉勤, 万师强. 2007. 气候变暖对陆地生态系统碳循环的影响. 植物生态学报, 31(2): 175-188.

杨会侠, 汪思龙, 范冰, 等. 2010. 不同林龄马尾松人工林年凋落物量与养分归还动态. 生态学杂志, 29(12): 2334-2340.

Austin A T, Vitousek P M. 2000. Precipitation, decomposition and litter decomposability of Metrosideros polymorpha in native forests on Hawai's. Journal of Ecology, 88(1): 129-138.

Austin A T, Vitousek P M. 1998. Nutrient dynamics on a precipitation gradient in Hawai'i. Oecologia, 113(4): 519-529.

Bokhorst S, Bjerke J W, Melillo J, et al. 2010. Impacts of extreme winter warming events on litter decomposition in a sub-Arctic heathland. Soil Biology and Biochemistry, 42(4): 611-617.

Boyero L, Pearson R G, Gessner M O, et al. 2011. A global experiment suggests climate warming will not accelerate litter decomposition in streams but might reduce carbon sequestration. Ecology letter, 14(3): 289-294.

Cortez J. 1998. Field decomposition of leaf litters: relationship between decomposition rates and soil moisture, soil temperature and earthworm activity. Soil Biology and Biochemistry, 30(6): 783-793.

Fierer N, Craine J M, Mclauchlan K, et al. 2005. Litter quality and the temperature sensitivity of decomposition. Ecology, 86(2): 320-326.

Hobbie S E, Vrrousek P M. 2000. Nutrient limitation of decomposition in Hawaiian forests. Ecology, 81(7): 1867-1877.

Liao J H, Wang H H, Tsai C C, et al. 2006. Litter production, decomposition and nutrient return of uplifted coral reef tropical forest. Forest Ecology and Management, 235(1-3): 174-185.

McClaugherty C A, Pastor J, Aber J D, et al. 1985. Forest litter decomposition in relation to soil nitrogen dynamics and litter quality. Ecology, 66(1): 266-275.

Moore T R, Trofymow J A, Taylor B, et al. 1999. Litter decomposition rates in Canadian forests. Global Change Biology, 5(1): 75-82.

Olson J S. 1963. Energy storage and the balance of producers and decomposers in ecological systems. Ecology, 44(2): 322-331.

Raich J W, Nadelhoffer K J. 1989. Belowground carbon allocation in forest ecosystems: global trends. Ecology, 70(5): 1346-1354.

Raich J W, Russell A E, Bedoya-Arrieta R. 2007. Lignin and enhanced litter turnover in tree plantations of lowland Costa Rica. Forest Ecology and Management, 239(1-3): 128-135.

Swift M J, Heal O W, Anderson J M. 1979. Decomposition in terrestrial ecosystems. Berkeley: University of California Press.

Trofymow J A, Moore T R, Titus B, et al. 2002. Rates of litter decomposition over 6 years in Canadian forests: influence of litter quality and climate. Canada Journal Forestry Researches, 32(5): 789-804.

Vitousek P M. 1984. Litterfall, nutrient cycling, and nutrient limitation in tropical forests. Ecology, 65(1): 285-298.

[1]	Wu Zhilong, Zhou Chengjun, Zhou Xinnian, Liu Fuwan, Zhu Qixiong, Huang Jinyong, Chen Wen. Difference in Soil Respiration Rates of the Mixed Plantations of Cunninghamia lanceolata and Broadleaved Trees 5 Years after Harvesting at Different Intensities [J]. Scientia Silvae Sinicae, 2019, 55(6): 142-149.
[2]	Gao Lan, Liu Yun, Xiong Xingzheng, Wu Jingchun, Wang Meng, Yuan Guiqiong, Ou Yang, Ren Li. Response of Introduced Plant Betula nigra and Native Plant Morus alba to Flooding in the Draw-down Zone in the Three Gorges Reservoir Area [J]. Scientia Silvae Sinicae, 2018, 54(9): 147-156.
[3]	Liu Peng, Jia Xin, Yang Qiang, Zha Tianshan, Wang Ben, Ma Jingyong. Characterization of Soil Respiration in a Shrubland Ecosystem of Artemisia ordosica in Mu Us Desert [J]. Scientia Silvae Sinicae, 2018, 54(5): 10-17.
[4]	Li Doudou, Xi Benye, Tang Lianfeng, Feng Chao, He Yuelin, Zhang Yaxiong, Liu Longlong, Liu Jinqiang, Jia Liming. Patterns of Soil Water Movement in Drip-Irrigated Young Populus tomentosa Plantations on Sandy Loam Soil and Their Simulation [J]. Scientia Silvae Sinicae, 2018, 54(12): 157-168.
[5]	Zhao Peiping, Jiang Peikun, Meng Cifu, He Shanqiong. Changes in ¹³C NMR Spectroscopy of Leaf-Litter during The Decomposition in Four Subtropical Forest Types in Southern China [J]. Scientia Silvae Sinicae, 2017, 53(6): 127-134.
[6]	Chen Wenye, Zhao Ming, Zhang Jiqiang, Yuan Haifeng, Dou Yingjie, Zhu Li, Chen Xu. Influence of Soil Water Content on Vegetation Characteristics in Desert-Wetland Ecosystem in Xihu of Dunhuang,Gansu [J]. Scientia Silvae Sinicae, 2015, 51(11): 8-16.
[7]	Bai Linli, Li Changxiao. Effects of Submersion on Susceptibility of Metasequoia glyptostroboides Seedlings to Drought [J]. Scientia Silvae Sinicae, 2014, 50(11): 166-174.
[8]	Niu Yun, Liu Xiande, Jing Wenmao, Che Zongxi, Zhao Weijun. Characteristics of Temperature, Soil Freezing and Thawing, and River Flow in Pailugou Watershed of Qilian Mountains [J]. Scientia Silvae Sinicae, 2014, 50(1): 27-31.
[9]	Wang Jinsong;Fan Juan;Zhao Xiuhai;Xia Fucai;Ni Ruiqiang;Jin Guanyi;Guo Yiqiu;Li Huashan. Soil Respiration Components and Its Controlling Factors in a Pinus tabulaeformis Plantation in Taiyue Mountain, China [J]. , 2013, 49(2): 1-7.
[10]	Yang Yujing;Li Changxiao;Zhang Ye;Cui Yunfeng. Effects of Submergence and Drought Alternation on Nutrient Contents in the Soil Growing Slash Pine (Pinus elliottii) Seedlings [J]. , 2013, 49(2): 61-71.
[11]	Xia Guowei, Kang Jin, Zhou Wei, Zhang Songzhi, Kang Yongxiang. Characteristics of Soil Respiration in Quercus aliena var. acuteserrata Forest and Its Clear-Cutting Site in Dormant Period [J]. Scientia Silvae Sinicae, 2013, 49(11): 1-8.
[12]	Zhu Yajuan;Jia Zhiqing. Water Source of Haloxylon ammodendron Plantations in Autumn at the Southeast Edge of Badain Jaran Desert [J]. Scientia Silvae Sinicae, 2012, 48(8): 1-5.
[13]	Lu Sen;Zhang Jinsong;Meng Ping;Gao Jun. Soil Surface Heat Flux in the Punica granatum-Triticum aestivum Intercropping System [J]. Scientia Silvae Sinicae, 2012, 48(8): 6-10.
[14]	Huang Xiaohui;Liu Yun;Li Jiaxing;Xiong Xingzheng;Yin Xiaohua;Chen Yang;Qin Jian;Huang Xianzhi;Du Yingwu. Effects of Water Stress on Physiological Characteristics of Mulberry(Morus alba) seedlings in the Hydro-Fluctuation Belt of the Three Gorges Reservoir Area [J]. Scientia Silvae Sinicae, 2012, 48(12): 122-127.
[15]	Wu Changguang;Zhou Zhixiang;Xiao Wenfa;Wang Pengcheng;Wang Tao;Huang Zijie. Dynamic Monitoring of Vegetation Coverage in Three Gorges Reservoir Area Based on MODIS NDVI [J]. Scientia Silvae Sinicae, 2012, 48(1): 22-28.

Effects of Soil Temperature and Soil Water Content to Needle Litter Leaf Decomposition of Pinus massoniana Plantations in Three Gorges Reservoir Area

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments