EFFECT OF PRECIPITATION PATTERN ON RECRUITMENT OF SOIL WATER IN KUBUQI DESERT, NORTHWESTERN CHINA

doi:10.3773/j.issn.1005-264x.2008.06.015

Abstract

Abstract:

Aims Soil water is one of the most important factors driving succession in the Artemisia ordosica community in the Ordos Plateau, an arid and semi-arid region of northwestern China. Precipitation is the main source of soil water on the sandland. During each rainfall, part of the rain water is intercepted by plants and the surface layer of soil. This usually quickly evaporates and seems to be biologically ineffective for plant life. Therefore, soil water recruitment is affected by both annual precipitation and characteristics of each rainfall event, such as amount and process. Our objective was to describe the dynamics of soil water content and water recruitment during the growing season.

Methods We used eddy covariance technology to study the process of hydrological balance at the ecosystem scale and considered rainfall and evaportranspiration characteristics.

Important findings In 2006, annual precipitation was about 229.4 mm and rainfall was the main form, mostly occurring from May to October. Rain events differed in rain amount, length of time and intensity. Ecosystem evaportranspiration and rainfall availability were clearly affected by these rain characteristics and other biotic and abiotic factors. Rain events <5.0 mm increased relative humidity and decreased temperature. Rain events >5.0 mm increased soil water in the root layer and were important to community development and stability.

Key words: rainfall pattern, evaportranspiration, soil water, ecosystem

WEI Ya-Fen, GUO Ke, CHEN Ji-Quan. EFFECT OF PRECIPITATION PATTERN ON RECRUITMENT OF SOIL WATER IN KUBUQI DESERT, NORTHWESTERN CHINA[J]. Chin J Plant Ecol, 2008, 32(6): 1346-1355.

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URL: https://www.plant-ecology.com/EN/10.3773/j.issn.1005-264x.2008.06.015

https://www.plant-ecology.com/EN/Y2008/V32/I6/1346

Figures/Tables 5

References 20

[1]	Breshears D, Barnes F (1999). Interrelationships between plant functional types and soil moisture heterogeneity for semiarid landscapes within the grassland/forest continuum: a unified conceptual model. Landscape Ecology, 14,465-478.
[2]	Buhe C, Cubasch U, Lin YH, Ji LR (2003). The change of north China climate in transient simulations using the IPCC SRES A2 and B2 scenarios with a coupled atmosphere-ocean general circulation model. Advances in Atmospheric Sciences, 20,755-766.
[3]	Falge E, Baldocchi D, Olson R, Anthoni P, Aubinet M, Bernhofer C, Burba G, Ceulemans R, Clement R, Dolman H, Granier A, Gross P, Grünwald T, Hollinger D, Jensen NO, Katul G, Keronen P, Kowalski A, Lai CT, Law BE, Meyers T, Moncrieff J, Moors E, Munger JW, Pilegaard K, Rannik Ü, Rebmann C, Suyker A, Tenhunen J, Tu K, Verma S, Vesala T, Wilson K, Wofsy S (2001). Gap filling strategies for defensible annual sums of net ecosystem exchange. Agricultural and Forest Meteorology, 107,43-69.
[4]	French KH, Binley A, Kharkhordin I, Kulessa B, Krylov SS (2006). Cold regions hydrogeophysics: physical characterization and monitoring. Applied Hydrogeophysics, 71,195-232.
[5]	Guo K (郭柯) (2000). Cyclic succession of Artemisia ordosica krasch community in the Mu Us sandy grassland. Acta Phytoecologica Sinica(植物生态学报), 24,243-247. (in Chinese with English abstract)
[6]	Guo K (郭柯), Dong XJ (董学军), Liu ZM (刘志茂) (2000). Characteristics of soil moisture content on sand dunes in Mu Us sandy grassland: Why Artemisia odorsica declines on old fixed sand dunes. Acta Phytoecologica Sinica (植物生态学报), 24,275-279. (in Chinese with English abstract)
[7]	Hu XL (胡小龙), Zhang WJ (张文军), Fan WY (樊文颖) (1996). Studies on the characteristics of soil moisture under Artemisia community in different coverage in the Maowusu sandy land. Inner Mongolia Forestry Science and Technology (内蒙古林业科学), 3/4,32-37. (in Chinese with English abstract)
[8]	Liu JS (刘峻杉), Gao Q (高琼), Guo K (郭柯) (2008). Actual evaporation of bare sand dunes in Maowusu, China and its response to precipitation pattern. Journal of Plant Ecology (Chinese Version)(植物生态学报), 32,123-132. (in Chinese with English abstract)
[9]	Liu XZ (刘贤赵), Kang SZ (康绍忠) (1999). Some developments and review of rainfall- infiltration-runoff yield research. Bulletin of Soil and Water Conservation (水土保持通报), 19(2),57-62. (in Chinese with English abstract)
[10]	Loik ME, Breshears DD, Lauenroth WK, Belnap J (2004). A multi-scale perspective of water pulses in dryland ecosystems: climatology and ecohydrology of the western USA.. Oecologia, 141,269-281. URL PMID
[11]	Nagler PL, Glenn EP, Kim H, Emmerich W, Scott RL, Huxman TE, Huete AR (2007). Relationship between evapotranspiration and precipitation pulses in a semiarid rangeland estimated by moisture flux towers and MODIS vegetation indices. Journal of Arid Environments, 70,443-462.
[12]	Ribolzi O, Hermida M, Karambiri H, Delhoume JP, Thiombiano L (2006). Effects of aeolian processes on water infiltration in sandy Sahelian rangeland in Burkina Faso. Catena, 67,145-154.
[13]	Wilson K, Goldstein A, Falge E, Aubinet M, Baldocchi D, Berbigier P, Bernhofer C, Ceulemans R, Dolman H, Field C, Grelle A, Ibrom A, Law BE, Kowalski A, Meyers T, Moncrieff J, Monson R, Oechel W, Tenhunen J, Valentini R, Verma S (2002). Energy balance closure at Fluxnet sites. Agricultural and Forest Meteorology, 113,223-243.
[14]	Xu K (许昆) (2004). Analysis on relationship between the precipitation and ground water replenishment. Ground Water (地下水), 26(4),57-62. (in Chinese with English abstract)
[15]	Xu YL, Zhang Y, Lin ED, Lin WT, Dong WJ, Jones R, Hassell D, Wilson S (2006). Analyses on the climate change responses over China under SRES B2 scenario using PRECIS. Chinese Science Bulletin, 51,2260-2267.
[16]	Yang BZ (杨宝珍), Dong XJ (董学军), Gao Q (高琼) (1994). A study on the transpiration and water deficit regime of the Artemisia ordosica community. Acta Phytoecologica Sinica(植物生态学报), 18,161-170. (in Chinese with English abstract)
[17]	Yang J (杨劼), Gao QZ (高清竹), Wu LJ (乌力吉), Tian QS (田青松), Liang JS (梁津松) (1999). Relationship of transpiration characteristics of Artemisia ordosica and environmental factors in Kubuqi desert. Acta Scientiarum Natrualium University NeiMongol (内蒙古大学学报(自然科学版)), 30,372-376. (in Chinese with English abstract)
[18]	Zhang DK (张德魁), Wang JH (王继和), Ma QL (马全林) (2007). Summary of Artemisia ordosica studies. Pratacultural Science (草业科学), 24,30-35. (in Chinese with English abstract)
[19]	Zhang XS (张新时) (1994). Principles and optimal models for development of Maowusu sandy grassland. Acta Phytoecologica Sinica (植物生态学报), 18,1-16. (in Chinese with English abstract)
[20]	Zhou JL (周金龙), Dong XG (董新光), Wang B (王斌) (2002). Research on precipitation recharge of phreatic water in Xinjiang plain area. Northwest Water Resources and Water Engineering (西北水资源与水工程), 13(4),10-14. (in Chinese with English abstract)

日期 Day of year	降雨量Rainfall (mm)	降雨历时 Lasting time (h)	降雨强度 Rainfall intensity 平均值±标准误差 Mean±SE (mm·h^-1)	蒸散速率 Evaportrans piration rate 平均值±标准误差 Mean±SE (W·m^-2)	单次蒸散量 Evaportrans piration (mm)
128	5.6	23.0	1.0±0.3	41.0±3.2	4.1
131	21.9	29.0	1.6±0.4	38.2±2.8	4.3
145	9.9	5.0	2.0±0.3	66.1±5.3	7.8
157	7.6	6.5	5.1±1.4	61.5±4.3	6.0
170	0.9	2.0	0.5±0.1	32.3±2.7	3.2
174	0.7	0.5	1.4±0.0	35.1±4.2	3.3
183	29	3.5	8.3±1.2	89.3±6.8	8.0
189	0.6	3.0	0.2±0.0	53.9±4.2	5.4
195	27.1	30.0	3.6±0.6	96.4±7.2	10.5
198	0.5	2.0	0.3±0.0	48.5±4.2	5.0
203	1.1	15.5	1.1±0.0	58.5±5.4	4.1
205	7.4	7.0	2.5±0.6	76.8±6.1	7.6
208	1.0	1.0	1.0±0.4	74.6±8.0	2.3
209	7.5	1.0	7.5±3.0	97.4±8.9	5.8
211	1.4	3.0	0.5±0.1	86.3±9.4	3.2
212	0.2	0.5	0.4±0.0	64.1±5.2	7.5
217	8.9	4.5	3.6±1.0	95.2±8.0	6.8
220	18.6	16.5	2.2±0.5	88.3±7.0	11.7
223	14.6	9.0	1.2±0.2	77.3±5.3	10.5
231	36.9	8.0	6.7±1.2	82.9±5.8	10.7
239	0.9	1.0	0.9±0.3	48.1±5.2	5.0
244	1.6	9.5	0.4±0.0	44.3±5.5	3.4
246	3.0	2.5	1.2±0.2	49.4±5.2	3.5
248	1.2	0.5	2.4±0.0	33.8±2.7	3.2
256	6.4	9.0	0.8±0.1	42.5±3.6	5.7
263	1.1	5.5	0.4±0.1	28.7±3.7	2.6
267	4.9	5.0	1.0±0.0	38.3±4.0	3.4
280	0.1	0.5	0.2±0.0	9.4±1.9	1.3
297	4.7	7.0	0.7±0.1	20.3±2.4	2.1
均值±标准误差 Mean±SE	7.8±1.8	7.6±1.4	2.0±0.4	58.0±4.6	5.5±0.5
总计 Sum	225.3				163.5

日期 Day of year	降雨量Rainfall (mm)	降雨历时 Lasting time (h)	降雨强度 Rainfall intensity 平均值±标准误差 Mean±SE (mm·h^-1)	蒸散速率 Evaportrans piration rate 平均值±标准误差 Mean±SE (W·m^-2)	单次蒸散量 Evaportrans piration (mm)
128	5.6	23.0	1.0±0.3	41.0±3.2	4.1
131	21.9	29.0	1.6±0.4	38.2±2.8	4.3
145	9.9	5.0	2.0±0.3	66.1±5.3	7.8
157	7.6	6.5	5.1±1.4	61.5±4.3	6.0
170	0.9	2.0	0.5±0.1	32.3±2.7	3.2
174	0.7	0.5	1.4±0.0	35.1±4.2	3.3
183	29	3.5	8.3±1.2	89.3±6.8	8.0
189	0.6	3.0	0.2±0.0	53.9±4.2	5.4
195	27.1	30.0	3.6±0.6	96.4±7.2	10.5
198	0.5	2.0	0.3±0.0	48.5±4.2	5.0
203	1.1	15.5	1.1±0.0	58.5±5.4	4.1
205	7.4	7.0	2.5±0.6	76.8±6.1	7.6
208	1.0	1.0	1.0±0.4	74.6±8.0	2.3
209	7.5	1.0	7.5±3.0	97.4±8.9	5.8
211	1.4	3.0	0.5±0.1	86.3±9.4	3.2
212	0.2	0.5	0.4±0.0	64.1±5.2	7.5
217	8.9	4.5	3.6±1.0	95.2±8.0	6.8
220	18.6	16.5	2.2±0.5	88.3±7.0	11.7
223	14.6	9.0	1.2±0.2	77.3±5.3	10.5
231	36.9	8.0	6.7±1.2	82.9±5.8	10.7
239	0.9	1.0	0.9±0.3	48.1±5.2	5.0
244	1.6	9.5	0.4±0.0	44.3±5.5	3.4
246	3.0	2.5	1.2±0.2	49.4±5.2	3.5
248	1.2	0.5	2.4±0.0	33.8±2.7	3.2
256	6.4	9.0	0.8±0.1	42.5±3.6	5.7
263	1.1	5.5	0.4±0.1	28.7±3.7	2.6
267	4.9	5.0	1.0±0.0	38.3±4.0	3.4
280	0.1	0.5	0.2±0.0	9.4±1.9	1.3
297	4.7	7.0	0.7±0.1	20.3±2.4	2.1
均值±标准误差 Mean±SE	7.8±1.8	7.6±1.4	2.0±0.4	58.0±4.6	5.5±0.5
总计 Sum	225.3				163.5

降雨级 Class	组别 Group	空气温度 Air temperature (℃)	湿度 Relative humidity (%)	可利用能量 Available energy (W·m^-2)	蒸散速率 ET rate (W·m^-2)	土壤含水量 VWC (%)
Ⅰ	1	22.4±0.2^a	48.4±0.7^a	70.1±5.3^a	48.3±1.9	12.1±0.0^a
	2	17.3±0.2^b	85.4±3.8^b	54.0±5.5^a	38.3±21.6	12.5±0.1^a
	3	21.0±0.3^c	56.9±1.1^c	96.0±5.9^b	49.7±2.3	11.7±0.0^b
Ⅱ	1	18.6±0.1^a	57.3±0.5^a	78.3±5.3^a	39.6±2.1^a	11. 9±0.0^a
	2	10.8±0.8^b	88.8±1.9^b	38.5±6.1^b	35.8±6.7^ab	11.7±0.0^b
	3	15.7±0.1^c	68.3±0.7^c	93.3±5.5^a	50.1±2.4^b	11.8±0.0^b
Ⅲ	1	21.3±0.4^a	49.0±1.0^a	80.1±8.2^a	36.1±2.3^a	10.7±0.0^a
	2	14.0±0.4^b	85.3±1.4^b	43.0±4.1^b	33.0±4.2^a	11.1±0.1^b
	3	18.4±0.4^c	65.4±1.2^c	124.9±9.7^c	83.6±4.0^b	11.2±0.0^b
Ⅳ	1	20.9±0.3^a	58.1±0.9^a	76.3±6.8^a	54.6±4.1^a	10.6±0.0^a
	2	15.9±0.4^b	90.6±0.6^b	43.7±4.6^b	49.6±4.6^a	12.0±0.2^b
	3	18.8±0.3^c	77.2±0.8^c	131.5±13.4^c	84.05±7.55^b	13.6±0.0^c
Ⅴ	1	27.2±0.2^a	40.4±0.5^a	60.7±6.1^a	44.9±2.5^a	10.8±0.0^a
	2	21.4±0.4^b	78.0±2.0^b	155.7±24.2^b	143.4±19.2^b	13.2±0.2^b
	3	20.3±0.3^c	82.7±0.8^b	70.6±9.0^a	69.1±4.7^c	14.4±0.2^c

降雨级 Class	组别 Group	空气温度 Air temperature (℃)	湿度 Relative humidity (%)	可利用能量 Available energy (W·m^-2)	蒸散速率 ET rate (W·m^-2)	土壤含水量 VWC (%)
Ⅰ	1	22.4±0.2^a	48.4±0.7^a	70.1±5.3^a	48.3±1.9	12.1±0.0^a
	2	17.3±0.2^b	85.4±3.8^b	54.0±5.5^a	38.3±21.6	12.5±0.1^a
	3	21.0±0.3^c	56.9±1.1^c	96.0±5.9^b	49.7±2.3	11.7±0.0^b
Ⅱ	1	18.6±0.1^a	57.3±0.5^a	78.3±5.3^a	39.6±2.1^a	11. 9±0.0^a
	2	10.8±0.8^b	88.8±1.9^b	38.5±6.1^b	35.8±6.7^ab	11.7±0.0^b
	3	15.7±0.1^c	68.3±0.7^c	93.3±5.5^a	50.1±2.4^b	11.8±0.0^b
Ⅲ	1	21.3±0.4^a	49.0±1.0^a	80.1±8.2^a	36.1±2.3^a	10.7±0.0^a
	2	14.0±0.4^b	85.3±1.4^b	43.0±4.1^b	33.0±4.2^a	11.1±0.1^b
	3	18.4±0.4^c	65.4±1.2^c	124.9±9.7^c	83.6±4.0^b	11.2±0.0^b
Ⅳ	1	20.9±0.3^a	58.1±0.9^a	76.3±6.8^a	54.6±4.1^a	10.6±0.0^a
	2	15.9±0.4^b	90.6±0.6^b	43.7±4.6^b	49.6±4.6^a	12.0±0.2^b
	3	18.8±0.3^c	77.2±0.8^c	131.5±13.4^c	84.05±7.55^b	13.6±0.0^c
Ⅴ	1	27.2±0.2^a	40.4±0.5^a	60.7±6.1^a	44.9±2.5^a	10.8±0.0^a
	2	21.4±0.4^b	78.0±2.0^b	155.7±24.2^b	143.4±19.2^b	13.2±0.2^b
	3	20.3±0.3^c	82.7±0.8^b	70.6±9.0^a	69.1±4.7^c	14.4±0.2^c

降雨级 Class	降雨效率 Mean efficiency (%)	最小 Min (%)	最大 Max (%)
II	41.6±13.8	4.0	62.5
III	54.9±8.4	27.0	88.2
IV	68.6±7.1	58.2	82.1
V	82.0±2.2	78.4	86.1