Effects of land use on soil respiration in the temperate steppe of Inner Mongolia, China

被引:76
作者
Gong, Ji-Rui [1 ]
Wang, Yihui [1 ]
Liu, Min [1 ]
Huang, Yongmei [1 ]
Yan, Xin [1 ]
Zhang, Ziyu [1 ]
Zhang, Wei [2 ]
机构
[1] Beijing Normal Univ, State Key Lab Surface Proc & Resource Ecol, Coll Resources Sci & Technol, Beijing 100875, Peoples R China
[2] Taishan Univ, Key Lab Tourism & Resources Environm Univ Shandon, Tai An 271021, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
Carbon storage; Grassland vegetation; Inner Mongolia; Soil respiration; Land-use type; LITTER MASS-LOSS; CO2; EFFLUX; LEYMUS-CHINENSIS; INTERANNUAL VARIABILITY; MICROBIAL CONTRIBUTIONS; SEASONAL-VARIATIONS; TALLGRASS PRAIRIE; ROOT RESPIRATION; CARBON BALANCE; ALPINE MEADOW;
D O I
10.1016/j.still.2014.06.002
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
Land use change has greatly affected ecosystem C processes and C exchanges in grassland ecosystems. The aim of this study was to determine the effects of land use (mowing, grazing exclusion, and grazing) on soil respiration (R-s) of a semi-arid temperate grassland during two growing seasons in Inner Mongolia, northern China, and to identify the main factors that affected R-s. During the growing season, R-s for the mowing, grazing exclusion, and grazing land-use types averaged 129, 150, and 194 g Cm-2 yr(-1), respectively, in 2011 (a dry year), versus 309, 272, and 262 g Cm-2 yr(-1), respectively, in 2012 (a wet year). Root respiration (R-r) accounted for 13-55% of R-s in 2011, versus 10-62% in 2012. R-s was strongly positively correlated with soil moisture for all three land uses, but weakly correlated with soil temperature (R-2 < 0.4 in all cases). R-s was significantly positively correlated with aboveground biomass (R-2 = 0.834), soil organic matter (R-2 = 0.765), root biomass (R-2 = 0.704), lignin mass loss rate (R-2 = 0.422), and the cellulose mass loss rate (R-2 = 0.849) and significantly negatively correlated with the litter C/N (R-2 = 0.609). The temperature sensitivity (Q(10)) exhibited large monthly changes, and ranged from 0.52 to 2.12. Rainfall plays a dominant role in soil respiration: precipitation increased soil respiration, but the response differed among the land-use types. Thus, soil water availability is a primary constraint on plant growth and ecosystem C processes. Soil temperature plays a secondary role. Litter decomposition rates and litter quality also appear to be important. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:20 / 31
页数:12
相关论文
共 50 条
[41]   Responses of soil enzyme activity and microbial community compositions to nitrogen addition in bulk and microaggregate soil in the temperate steppe of Inner Mongolia [J].
Shi, Yao ;
Sheng, Lianxi ;
Wang, Zhongqiang ;
Zhang, Xinyu ;
He, Nianpeng ;
Yu, Qiang .
EURASIAN SOIL SCIENCE, 2016, 49 (10) :1149-1160
[42]   Effects of increasing precipitation and nitrogen deposition on CH4 and N2O fluxes and ecosystem respiration in a degraded steppe in Inner Mongolia, China [J].
Chen, Weiwei ;
Zheng, Xunhua ;
Chen, Qing ;
Wolf', Benjamin ;
Butterbach-Bahl, Klaus ;
Brueggemann, Nicolas ;
Lin, Shan .
GEODERMA, 2013, 192 :335-340
[43]   Experimental study on soil respiration of temperate grassland in China [J].
WANG Gengchen DU Rui KONG Qinxin L Daren Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China .
Chinese Science Bulletin, 2004, (06) :642-646
[44]   Effects of warming and changing precipitation rates on soil respiration over two years in a desert steppe of northern China [J].
Liu, Tao ;
Xu, Zhen-Zhu ;
Hou, Yan-Hui ;
Zhou, Guang-Sheng .
PLANT AND SOIL, 2016, 400 (1-2) :15-27
[45]   Experimental study on soil respiration of temperate grassland in China [J].
Wang, GC ;
Du, R ;
Kong, QX ;
Lü, DR .
CHINESE SCIENCE BULLETIN, 2004, 49 (06) :642-646
[46]   Soil respiration and carbon stock responses to land use changes in the temperate forest of northern Iran [J].
Hojjati, Seyed Mohammad ;
Tafazoli, Mahya ;
Asadian, Maryam ;
Baluee, Ali .
ENVIRONMENTAL EARTH SCIENCES, 2023, 82 (18)
[47]   Differential effects of grazing, water, and nitrogen addition on soil respiration and its components in a meadow steppe [J].
Wang, Yunbo ;
Wang, Deli ;
Shi, Baoku ;
Sun, Wei .
PLANT AND SOIL, 2020, 447 (1-2) :581-598
[48]   Soil respiration under three different land use types in a tropical mountain region of China [J].
Wu Jun-jie ;
Goldberg, Stefanie Daniela ;
Mortimer, Peter Edward ;
Xu, Jian-chu .
JOURNAL OF MOUNTAIN SCIENCE, 2016, 13 (03) :416-423
[49]   Response of soil N2O emissions to precipitation pulses under different nitrogen availabilities in a semiarid temperate steppe of Inner Mongolia, China [J].
Liu, XinChao ;
Qi, YuChun ;
Dong, YunShe ;
Peng, Qin ;
He, YaTing ;
Sun, LiangJie ;
Jia, JunQiang ;
Cao, CongCong .
JOURNAL OF ARID LAND, 2014, 6 (04) :410-422
[50]   The response of grassland productivity, soil carbon content and soil respiration rates to different grazing regimes in a desert steppe in northern China [J].
Hou, Xiangyang ;
Wang, Zhen ;
Michael, Schellenberg P. ;
Ji, Lei ;
Yun, Xiangjun .
RANGELAND JOURNAL, 2014, 36 (06) :573-582