Characteristics of Water Stable Isotopes in Soil-plant-atmosphere Continuum (SPAC) in the Needle-leaf and Broad-leaf Mixed Forest in Subtropical Region

doi:10.16258/j.cnki.1674-5906.2021.06.005

Ecology and Environment ›› 2021, Vol. 30 ›› Issue (6): 1148-1157.DOI: 10.16258/j.cnki.1674-5906.2021.06.005

• Research Articles • Previous Articles Next Articles

Characteristics of Water Stable Isotopes in Soil-plant-atmosphere Continuum (SPAC) in the Needle-leaf and Broad-leaf Mixed Forest in Subtropical Region

WANG Rui¹(), ZHANG Xinping¹^,²^,^*(), DAI Junjie¹, LUO Zidong¹, HE Xinguang¹^,², GUAN Huade³

1. College of Resources and Environmental Sciences, Hunan Normal University, Changsha 410081, China
2. Key Laboratory of Geospatial Big Data Mining and Application, Changsha 410081, China
3. National Centre for Groundwater Research and Training, Flinders University, Adelaide, SA 5001, Australia

Received:2020-12-15 Online:2021-06-18 Published:2021-09-10
Contact: ZHANG Xinping

亚热带针阔混交林土壤-植物-大气连续体（SPAC）中水稳定同位素特征

王锐¹(), 章新平¹^,²^,^*(), 戴军杰¹, 罗紫东¹, 贺新光¹^,², 关华德³

1.湖南师范大学资源与环境科学学院,湖南长沙 410081
2.湖南师范大学/地理空间大数据挖掘与应用湖南省重点实验室,湖南长沙 410081
3.National Centre for Groundwater Research and Training, Flinders University, Adelaide, SA 5001, Australia

通讯作者: 章新平
作者简介:王锐（1995年生）,男,硕士研究生,主要从事植被与生态水文研究。E-mail: 2869299935@qq.com
基金资助:
国家自然科学基金项目(41571021);湖南省人影办自立项科研课题(201901)

Abstract

Abstract:

In order to determine the hydrological processes of the forest system in subtropical humid region, the stable isotopic compositions in precipitation, soil water, twig xylem water and leaf water of Cinnamomum camphora and Cunninghamia lanceolate in the needle-leaf and broad-leaf mixed forest in Changsha were analyzed and combined with environmental factors, the characteristics of stable isotope variations and their influencing factors during the internal conversion of water in the forest system (SPAC) in the subtropical region were analyzed. The results showed that: The δ¹⁸O in precipitation, soil water, xylem water of C. camphora and C. lanceolate in the study area showed higher in wet period (October-June of the following year) and lower in dry period (July-September). To be more specific, the range of δ¹⁸O in soil water decreased with the increase of depth. Different from the obvious seasonal variation in the δ¹⁸O of xylem water, there were no obvious variation in the δ¹⁸O in xylem water of C. camphora and C. lanceolate on typical sunny days during both wet and dry periods. Compared with the δ¹⁸O in xylem water, the stable isotopes in leaf water of C. camphora and C. lanceolate showed obvious seasonal and diurnal variation. In wet period, the δ¹⁸O and Δ¹⁸O_L in leaf water of the two species were higher than in dry period, otherwise the slope of LWL was smaller than in dry period. In typical sunny days of wet period, the δ¹⁸O and Δ¹⁸O_L in leaf water of C. camphora and C. lanceolate were significantly higher than dry period, but slope of the LWL was smaller than in dry period. Based on the correlation analysis between Δ¹⁸O_L and meteorological factors, in terms of seasonal variations, RH, R_S and VPD were the main factors affecting the enrichment of stable isotopes in leaf water of C. camphora and C. lanceolata; but for the diurnal variations, the greatest influence was exerted by T, RH and VPD.

Key words: precipitation, soil water, xylem water, leaf water, water stable isotope

摘要：

为揭示亚热带湿润地区森林系统内部的水文过程,通过分析长沙地区针阔混交林内降水、土壤水、樟树（Cinnamomum camphora）和刺杉（Cunninghamia lanceolate）茎杆水与叶片水中稳定同位素组成,并结合相关环境因子,分析了亚热带地区水分在森林系统（SPAC）内部转换过程中稳定同位素的变化特征及其影响因素。结果表明：研究区降水、土壤水和樟树、刺杉茎杆水中δ¹⁸O均表现出在湿润期（10月至次年6月）偏正,在干旱期（7—9月）偏负的季节变化趋势。其中,林下土壤水中δ¹⁸O随深度的增加季节变化逐渐减小。与茎杆水中δ¹⁸O明显的季节变化不同,在湿润期和干旱期典型晴日樟树与刺杉茎杆水中δ¹⁸O不存在明显的日内变化。相较于茎杆水中δ¹⁸O,樟树和刺杉叶片水中稳定同位素既存在明显季节变化也存在明显的日内变化。在湿润期内,两种植物叶片水中δ¹⁸O、Δ¹⁸O_L（叶片水同位素富集程度）均大于干旱期两种植物叶片水中δ¹⁸O、Δ¹⁸O_L,叶片水线（LWL）的斜率则小于干旱期两种植物LWL的斜率。在湿润期典型晴日内,樟树和刺杉叶片水中δ¹⁸O、Δ¹⁸O_L明显大于干旱期典型晴日内叶片水中δ¹⁸O、Δ¹⁸O_L,LWL的斜率则小于干旱期典型晴日内两种植物LWL的斜率。基于Δ¹⁸O_L与各气象因子的相关性分析得到,在季节变化上,相对湿度、太阳辐射和饱和水汽压差是影响樟树和刺杉叶片水中稳定同位素富集程度的主要因子;在日内变化上,温度、相对湿度和饱和水汽压差对两种植物叶片水中稳定同位素富集程度影响最大。

关键词: 降水, 土壤水, 茎杆水, 叶片水, 水稳定同位素

CLC Number:

S715
X17

WANG Rui, ZHANG Xinping, DAI Junjie, LUO Zidong, HE Xinguang, GUAN Huade. Characteristics of Water Stable Isotopes in Soil-plant-atmosphere Continuum (SPAC) in the Needle-leaf and Broad-leaf Mixed Forest in Subtropical Region[J]. Ecology and Environment, 2021, 30(6): 1148-1157.

王锐, 章新平, 戴军杰, 罗紫东, 贺新光, 关华德. 亚热带针阔混交林土壤-植物-大气连续体（SPAC）中水稳定同位素特征[J]. 生态环境学报, 2021, 30(6): 1148-1157.

Figures/Tables 8

References 38

[1]	BRUNEL J, WALKER G R, KENNETT-SMITH A K, 1995. Field validation of isotopic procedures for determining sources of water used by plants in a semi-arid environment[J]. Journal of Hydrology, 167(1): 351-368. DOI URL
[2]	BUTT S, ALI M, FAZIL M, et al., 2010. Seasonal variations in the isotopic composition of leaf and stem water from an arid region of Southeast Asia[J]. Hydrological Sciences Journal, 55(5): 844-848. DOI URL
[3]	BARBOUR M M, SCHURR U, HENRY B K, et al., 2000. Variation in the oxygen isotope ratio of phloem sap sucrose from castor bean[J]. Evidence in support of the Péclet effect. Plant Physiology, 123(2): 671-679.
[4]	CHE C W, ZHANG M J, ARGIRIOU A A, et al., 2019. The stable isotopic composition of different water bodies at the soil-plant-atmosphere continuum (SPAC) of the western Loess Plateau, China[J]. Water (Basel), 11(9): 1742.
[5]	CRAIG H, GORDON L, 1961. Isotopic variations in meteoric water[J]. Science, 133: 351-368.
[6]	DAI J J, ZHANG X P, LUO Z D, et al., 2020. Variation of the stable isotopes of water in the soil-plant-atmosphere continuum of a Cinnamomum camphora woodland in the East Asian monsoon region[J]. Journal of Hydrology, DOI: 10.1016/j.jhydrol.2020.125199. DOI
[7]	DAWSON T E, MAMBELLI S, PLAMBOECK A H, et al., 2002. Stable isotopes in plant ecology[J]. Annual Review of Ecology and Systematics, 33: 507-559. DOI URL
[8]	DONGMANN G, NURNBERG H W, FORSTEL H, et al., 1974. On the enrichment of H₂¹⁸O in the leaves of transpiring plant[J]. Radiation and Environmental, 11(1): 41-52.
[9]	EHLERINGER J R, DAWSON T E, 1992. Water uptake by plants: perspectives from stable isotope composition[J]. Plant, Cell and Environment, 15(9): 1073-1082. DOI URL
[10]	FARQUHAR G D, GAN K S, 2003. On the progressive enrichment of the oxygen isotopic composition of water along a leaf[J]. Plant Cell Environment, 26(6): 801-819. DOI URL
[11]	GUY R D, FOGEL M L, BERRY J A, 1993. Photosynthetic fractionation of the stable isotopes of oxygen and carbon[J]. Plant Physiology, 101(1): 37-47. DOI URL
[12]	HUA M Q, ZHANG X P, YAO T C, et al., 2019. Dual effects of precipitation and evaporation on lake water stable isotope composition in the monsoon region[J]. Hydrological Processes, 33(16): 2192-2205.
[13]	LAI C T, OMETTO J P H B, BERRY J A, et al., 2008. Life form-specific variations in leaf water oxygen-18 enrichment in Amazonian vegetation[J]. Oecologia, 157(2): 197-210. DOI URL
[14]	LUO Z D, GUAN H D, ZHANG X P, et al., 2019. Examination of the ecohydrological separation hypothesis in a humid subtropical area: Comparison of three methods[J]. Journal of Hydrology, 571: 642-650. DOI URL
[15]	ROBERTSON J A, GAZIS C A, 2006. An oxygen isotope study of seasonal trends in soil water fluxes at two sites along a climate gradient in Washington state (USA)[J]. Journal of Hydrology, 328(1-2): 375-387. DOI URL
[16]	SNYER K A, MONNAR R, POULSON S R, et al., 2010. Diurnal variations of needle water isotopic ratios in two pine species[J]. Trees, 24(3): 585-595. DOI URL
[17]	STAHL C, HERAULT B, ROSSI V, et al., 2013. Depth of soil water uptake by tropical rainforest trees during dry periods: does tree dimension matter?[J]. Oecologia, 173(4): 1191-1201. DOI URL
[18]	YAKIR D, DENIRO M J, GAT J R, 1990. Natural deuterium and oxygen-18 enrichment in leaf water of cotton plants grown under wet and dry conditions: Evidence for water compartmentation and its dynamics[J]. Cell and Environment, 13(1): 49-56. DOI URL
[19]	YANG B, WEN X F, SUN X M, et al., 2015. Irrigation depth far exceeds water uptake depth in an oasis cropland in the middle reaches of Heihe River Basin[J]. Scientific Reports, 5(5): 289-296.
[20]	YEPEZ E A, WILLIAMS D G, SCOTT R L, et al., 2003. Partitioning overstory and understory evapotranspiration in a semiarid savanna woodland from the isotopic composition[J]. Agricultural and Foerst Meteorology, 119(1-2): 53-68.
[21]	党宏忠, 却晓娥, 冯金超, 等, 2020. 土壤水分对黄土区苹果园土壤-植物-大气连续体 (SPAC) 中水势梯度的影响[J]. 应用生态学报, 31(3): 829-836.
	DANG H Z, QUE X E, FENG J C, et al., 2020. Effect of soil moisture on water poyenial gradients in the soil-plant-atmosphere continuum (SPAC) of apple orchards in the Loess Plateau, Northwest China[J]. Chinese Journal of Applied Ecology, 31(3): 829-836.
[22]	邓文平, 章洁, 张志坚, 等, 2017. 北京土石山区水分在土壤-植物-大气连续体(SPAC)中的稳定同位素特征[J]. 应用生态学报, 28(7): 2171-2178.
	DENG W P, ZHANG J, ZHANG Z J, et al., 2017. Stable hydrogen and oxygen isotope compositions in soil-plant-atmosphere continuum (SPAC) in rocky mountain area of Beijing, China[J]. Chinese Journal of Applied Ecology, 28(7): 2171-2178.
[23]	黄一民, 章新平, 唐方丽, 等, 2013. 长沙大气降水中稳定同位素变化及过量氘指示水汽来源[J]. 自然资源学报, 28(11): 1945-1954.
	HUANG Y M, ZHANG X P, TANG F L, et al., 2013. Variations of precipitation stable isotope and vapor origins revealed by deuterium excess in Changsha[J]. Journal of Nature Resource, 28(11): 1946-1954.
[24]	李龙, 唐常源, 曹英杰, 2020. 亚热带地区常绿阔叶林SPAC系统水分的氢氧稳定同位素特征[J/OL]. 应用生态学报, 31(9): 2875-2884.
	LI L, TANG C Y, CAO Y J, 2020. Hydrogen and oxygen stable isotope characteristics of water in SPAC system of evergreen broad-leaved forest in subtropical region[J]. Chinese Journal of Applied Ecology, 31(9): 2875-2884.
[25]	刘文茹, 彭新华, 沈业杰, 等, 2013. 激光同位素分析仪测定液态水的氢氧同位素及其光谱污染修正[J]. 生态学杂志, 32(5): 1181-1186.
	LIU W R, PENG X H, SHEN Y J, et al., 2013. Measurements of hydrogen and oxygen isotopes in liquid water by isotope ratio infrared spectroscopy (IRIS) and their spectral contamination corrections[J]. Chinese Journal of Ecology, 32(5): 1181-1186.
[26]	刘仲藜, 章新平, 黎祖贤, 等, 2020. 洞庭湖流域近58年季节性干旱时空分布及大气环流分析[J]. 长江流域资源与环境, 29(6): 1432-1444.
	LIU Z L, ZHANG X P, LI Z X, et al., 2020. Analysis on spatial- temporal distribution and atmospheric circulation of seasonal droughts in the Dongting lake basin in recent 58 years[J]. Resources and Environment in the Yangtze Basin, 29(6): 1432-1444.
[27]	娄源海, 余新晓, 邓文平, 等, 2016. 北京山区三种植物叶片水δ¹⁸O特征及影响因子[J]. 生态学杂志, 35(5): 1240-1247.
	LOU H Y, YU X X, DENG W P, et al., 2016. Leaf water δ¹⁸O characteristics and impact factors of three plants in Beijing mountainous area[J]. Chinese Journal of Ecology, 35(5): 1240-1247.
[28]	罗紫东, 关华德, 章新平, 等, 2016. 亚热带樟树树干液流通量变化规律[J]. 热带地理, 36(4): 658-665.
	LUO Z D, GUAN H D, ZHANG X P, et al., 2016. Sap flow characteristics of Cinnamomum camphora, a subtropical evergreen tree species[J]. Tropical Geography, 36(4): 658-665.
[29]	罗伦, 余武生, 万诗敏, 等, 2013. 植物叶片水稳定同位素研究进展[J]. 生态学报, 33(4): 1031-1041.
	LUO L, YU W S, WAN S M, et al., 2013. Advances in the study of stable isotope composition of leaf water in plants[J]. Acta Ecologica Sinica, 33(4): 1031-1041. DOI URL
[30]	王锐, 章新平, 戴军杰, 等, 2020a. 亚热带典型植物水分利用来源变化的水稳定同位素分析[J]. 水土保持学报, 34(1): 202-209.
	WANG R, ZHANG X P, DAI J J, et al., 2020a. Variation in water uptake sources of typical plants in subtropical area based on stable isotope measurements[J]. Journal of Soil and Water Conservation, 34(1): 202-209.
[31]	王锐, 章新平, 戴军杰, 等, 2020b. 亚热带地区不同林分下植物水分利用的季节差异[J]. 生态环境学报, 29(4): 665-675.
	WANG R, ZHANG X P, DAI J J, et al., 2020b. Seasonal differences in water-uptake pattern of plants under different forest types in subtropical regions[J]. Ecology and Environmental Sciences, 29(4): 665-675.
[32]	王小婷, 温学发, 2016. 黑河中游春玉米叶片水δD和δ¹⁸O的富集过程和影响因素[J]. 植物生态学报, 40(9): 912-924. DOI
	WANG X T, WEN X F, 2016. Leaf water δD and δ¹⁸O enrichment process and influencing factors in spring maize (Zea mays) grown in the middle reaches of Heihe River Basin[J]. Chinese Journal of Plant Ecology, 40(9): 912-924. DOI URL
[33]	王文, 许志丽, 蔡晓军, 等, 2016. 基于PDSI的长江中下游地区干旱分布特征[J]. 高原气象, 35(3): 693-707.
	WANG W, XU Z L, CAI X J, et al., 2016. Aridity characteristic in middle and lower reaches of Yangtze River area based on Palmer drought severity index analysis[J]. Plateau Meteorology, 35(3): 693-707.
[34]	温学发, 张世春, 孙晓敏, 等, 2008. 叶片水H₂¹⁸O富集的研究进展[J]. 植物生态学报, 32(4): 961-966. DOI
	WEN X F, ZHANG S C, SUN X M, et al., 2008. Recent advances in H₂¹⁸O enrichment in leaf water[J]. Journal of Plant Ecology, 32(4): 961-966.
[35]	吴华武, 章新平, 关华德, 等, 2012. 不同水汽来源对湖南长沙地区降水中δD、δ¹⁸O的影响[J]. 自然资源学报, 27(8): 1404-1414.
	WU H W, ZHANG X P, GUAN H D, et al., 2012. Influences of different moisture sources on δD and δ¹⁸O in Precipitation in Changsha, Hunan Province[J]. Journal of Natural Resources, 27(8): 1404-1414.
[36]	章新平, 关华德, 张新主, 等, 2015. 季风区长沙站大气水汽和降水中δ¹⁸O的模拟[J]. 冰川冻土, 37(1): 249-257.
	ZHANG X P, GUAN H D, ZHANG X Z, et al., 2015. Simulation of δ¹⁸O in atmospheric vapour and precipitation in Changsha Station, East Asian monsoon region[J]. Journal of Glaciology and Geocryology, 37(1): 249-257.
[37]	周盼盼, 张明军, 王圣杰, 等, 2016. 兰州城区绿化植物稳定氢氧同位素特征[J]. 生态学杂志, 35(11): 2942-2951.
	ZHOU P P, ZHANG M J, WANG S J, et al., 2016. The characteristics of stable hydrogen and oxygen isotopes of greening plants in Lanzhou downtown[J]. Chinese Journal of Ecology, 35(11): 2942-2951.
[38]	周慧, 章新平, 姚天次, 等, 2018. 我国大气降水中δ¹⁸O变化的多气象因子分析及分区研究[J]. 环境科学学报, 38(6): 2242-2252.
	ZHOU H, ZHANG X P, YAO T C, et al., 2018. Analysis on the impacts of multiple meteorological factors on precipitation δ¹⁸O and its regionalization in China[J]. Acta Scientiae Circumstantiae, 38(6): 2242-2252.

时间 Date		降水 Precipitation		土壤水 Soil water
时间 Date		P	n	SW_{0‒10 cm}	SW_{10‒20 cm}	SW_{20‒60 cm}	SW_{60‒100 cm}	n
湿润期 (10月至次年6月)	2017	-6.69±3.45	50	-4.64±2.43	-5.22±1.39	-6.49±1.20	-7.96±1.49	7
	2017—2018	-5.29±2.74	64	-6.48±2.65	-7.09±2.46	-7.72±1.03	-7.28±0.68	20
	2018—2019	-4.81±2.46	126	-5.44±1.87	-6.26±1.85	-7.16±1.63	-7.64±1.20	16
干旱期 (7—9月)	2017	-10.38±2.35	13	-10.19±1.02	-10.44±0.76	-8.47±0.98	-6.77±0.55	8
	2018	-8.93±2.06	21	-8.27±0.90	-8.68±0.74	-7.97±0.70	-7.90±0.36	6
	2019	-8.64±2.19	10	-7.14±1.35	-8.26±1.06	-7.51±1.22	-6.38±0.91	8

时间 Date		降水 Precipitation		土壤水 Soil water
时间 Date		P	n	SW_{0‒10 cm}	SW_{10‒20 cm}	SW_{20‒60 cm}	SW_{60‒100 cm}	n
湿润期 (10月至次年6月)	2017	-6.69±3.45	50	-4.64±2.43	-5.22±1.39	-6.49±1.20	-7.96±1.49	7
	2017—2018	-5.29±2.74	64	-6.48±2.65	-7.09±2.46	-7.72±1.03	-7.28±0.68	20
	2018—2019	-4.81±2.46	126	-5.44±1.87	-6.26±1.85	-7.16±1.63	-7.64±1.20	16
干旱期 (7—9月)	2017	-10.38±2.35	13	-10.19±1.02	-10.44±0.76	-8.47±0.98	-6.77±0.55	8
	2018	-8.93±2.06	21	-8.27±0.90	-8.68±0.74	-7.97±0.70	-7.90±0.36	6
	2019	-8.64±2.19	10	-7.14±1.35	-8.26±1.06	-7.51±1.22	-6.38±0.91	8

时间 Date		樟树 C. camphora				刺杉 C. lanceolata
时间 Date		叶片 (LW) δ¹⁸O	茎杆 (XW) δ¹⁸O	Δ¹⁸O_L	n	叶片 (LW) δ¹⁸O	茎杆 (XW) δ¹⁸O	Δ¹⁸O_L	n
湿润期 (10月至次年6月)	2017	8.54±8.66	-4.59±0.43	13.13±8.71	7
	2017—2018	7.99±6.46	-6.99±1.49	14.97±5.74	20
	2018—2019	7.46±5.47	-5.66±1.54	13.12±5.47	16	8.68±5.39	-5.72±1.36	14.41±5.10	15
干旱期 (7—9月)	2017	3.83±4.51	-7.84±0.85	11.68±4.28	8
	2018	4.60±3.48	-7.39±0.58	11.98±3.98	6
	2019	5.14±5.16	-6.34±0.37	11.48±5.13	8	7.46±3.24	-5.73±0.73	13.19±3.14	8

时间 Date		樟树 C. camphora				刺杉 C. lanceolata
时间 Date		叶片 (LW) δ¹⁸O	茎杆 (XW) δ¹⁸O	Δ¹⁸O_L	n	叶片 (LW) δ¹⁸O	茎杆 (XW) δ¹⁸O	Δ¹⁸O_L	n
湿润期 (10月至次年6月)	2017	8.54±8.66	-4.59±0.43	13.13±8.71	7
	2017—2018	7.99±6.46	-6.99±1.49	14.97±5.74	20
	2018—2019	7.46±5.47	-5.66±1.54	13.12±5.47	16	8.68±5.39	-5.72±1.36	14.41±5.10	15
干旱期 (7—9月)	2017	3.83±4.51	-7.84±0.85	11.68±4.28	8
	2018	4.60±3.48	-7.39±0.58	11.98±3.98	6
	2019	5.14±5.16	-6.34±0.37	11.48±5.13	8	7.46±3.24	-5.73±0.73	13.19±3.14	8

时间 Date		樟树 C. camphora		刺杉 C. lanceolata
时间 Date		水线方程 Water line (LWL)	n	水线方 Water line (LWL)	n
季节变化 Seasonal variation	湿润期 (10月至次年6月)	δD=3.06δ¹⁸O-21.74	43	δD=2.44δ¹⁸O-14.17	15
季节变化 Seasonal variation	干旱期 (7—9月)	δD=3.26δ¹⁸O-39.70	22	δD=2.61δ¹⁸O-27.72	8
日内变化 Daily variation	湿润期典型晴日 (2019-05-23—2019-05-24)	δD=1.05δ¹⁸O+17.24	12	δD=2.17δ¹⁸O+1.03	12
日内变化 Daily variation	干旱期典型晴日 (2019-08-28—2019-08-29)	δD=1.94δ¹⁸O-29.48	12	δD=2.44δ¹⁸O-27.71	12

Characteristics of Water Stable Isotopes in Soil-plant-atmosphere Continuum (SPAC) in the Needle-leaf and Broad-leaf Mixed Forest in Subtropical Region

亚热带针阔混交林土壤-植物-大气连续体（SPAC）中水稳定同位素特征

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 8

References 38

Related Articles 10

Recommended Articles

Metrics

Comments

项目 Item	时间 Date	树种 Plant species	n	T/℃	RH/%	R_S/(W∙m^-2)	VPD/kPa
季节变化 Seasonal variation	湿润期 (10月至次年6月)	樟树 C. camphora	43	0.09	-0.84**	0.64**	0.55**
	湿润期 (10月至次年6月)	刺杉 C. lanceolata	15	0.41	-0.80**	0.66**	0.59*
	干旱期 (7—9月)	樟树 C. camphora	22	0.42	-0.63**	0.42	0.66**
	干旱期 (7—9月)	刺杉 C. lanceolata	8	0.34	-0.84**	0.65	0.81*
日内变化 Daily variation	湿润期典型晴日 (2019-05-23—2019-05-24)	樟树 C. camphora	12	0.71**	-0.76**	0.37	0.77**
	湿润期典型晴日 (2019-05-23—2019-05-24)	刺杉 C. lanceolata	12	0.70*	-0.72**	0.40	0.74**
	干旱期典型晴日 (2019-08-28—2019-08-29)	樟树 C. camphora	12	0.70*	-0.73**	0.40	0.76**
	干旱期典型晴日 (2019-08-28—2019-08-29)	刺杉 C. lanceolata	12	0.64*	0.66*	0.17	0.66*

[1]	CHEN Junfang, WU Xian, LIU Xiaolin, LIU Juan, YANG Jiarong, LIU Yu. Shaping Characteristics of Elemental Stoichiometry on Microbial Diversity under Different Soil Water Contents [J]. Ecology and Environment, 2023, 32(5): 898-909.
[2]	GE Yuankai, ZHAO Longlong, CHEN Jinsong, REN Yanni, LI Hongzhong. Spatio-temporal Evolution Trend of Meteorological Drought and Identification of Drought Events in Southwest China from 1983 to 2020 [J]. Ecology and Environment, 2023, 32(5): 920-932.
[3]	HAN Cui, KANG Yangmei, YU Hailong, Li Bing, HUANG Juying. Effects of Precipitation on Soil Enzyme Activities during Litter Decomposition in A Desert Steppe of Northwestern China [J]. Ecology and Environment, 2022, 31(9): 1802-1812.
[4]	CUI Qiao, LI Zongxing, ZHANG Baijuan, ZHAO Yue, NAN Fusen. A Meta-analysis of the Effects of Freezing and Thawing on Soil Dissolved Carbon and Nitrogen and Microbial Biomass Carbon and Nitrogen Contents [J]. Ecology and Environment, 2022, 31(8): 1700-1712.
[5]	ZHANG Hengyu, SUN Shuchen, WU Yuanzhi, AN Juan, SONG Hongli. Distribution Characteristics of Soil Water, Carbon and Nitrogen under Different Vegetation Densities in Loess Plateau [J]. Ecology and Environment, 2022, 31(5): 875-884.
[6]	CHEN Lijuan, ZHOU Wenjun, YI Yanyun, SONG Qinghai, ZHANG Yiping, LIANG Naishen, LU Zhiyun, WEN Handong, MOHD Zeeshan, SHA Liqing. Characteristics of Soil CH₄ Flux in the Subtropical Evergreen Broad-leaved Forest in Ailao Mountain, Yunnan, Southwest China [J]. Ecology and Environment, 2022, 31(5): 949-960.
[7]	CHEN Wenjie, LI Hui, HE Bin, TAO Liang. Influence of Co-existing Anions and Cations on Phosphate Sequestration onto Goethite [J]. Ecology and Environment, 2022, 31(1): 151-159.
[8]	ZHANG Kai, WANG Liwei, GAO Xining, HE Minghui. Effects of Nitrogen Management on the Potential of N₂O Emission Reduction and Yield Increase in Potato Field under Different Precipitation Patterns Based on DNDC Model [J]. Ecology and Environment, 2021, 30(8): 1672-1682.
[9]	ZHU Ping, CUI Shanshan, LI Zhanbin, ZHU Xuetong, HE Jinlin, TAN Hong. Influence of Atmospheric Precipitation on the Release of Cadmium from High Background Soils in Karst Areas of Guizhou [J]. Ecology and Environment, 2021, 30(11): 2213-2222.
[10]	LU Qiaoqian, JIANG Tao, LIU Danli, LIU Zhiyong. The Response Characteristics of NDVI with Different Vegetation Cover Types to Temperature and Precipitation in China [J]. Ecology and Environment, 2020, 29(1): 23-34.