荒漠-绿洲过渡带典型固沙植物根区土壤大孔隙特征及影响因素

doi:10.13866/j.azr.2024.12.04

Abstract

Abstract:

Soil macropores are the main channels for soil moisture infiltration. Investigating their characteristics and influencing factors in the root zone of typical sand-fixing plants in the desert-oasis transition zone is crucial for regional ecological vegetation restoration and plant selection. In this study, we investigated the characteristics of soil macropores in the root zone of these plants in the middle reaches of the Heihe River desert-oasis transition zone through water penetration experiments. We analyzed the influencing factors of soil macropores and their impact on soil-saturated hydraulic conductivity. The results show the following: (1) The radius of soil macropores ranges from 0.5 to 1.6 mm, exceeding the minimum aeration pore radius of 0.3 mm. Soil moisture movement is mainly driven by gravitational water. The density of soil macropores in the root zone of sand-fixing plants in the transition zone decreases with increasing soil depth, characterized by a higher number of smaller pores and fewer larger pores. (2) Soil bulk density and other soil macropore indicators, except for the total number of macropores, showed a highly significant negative correlation. Conversely, saturated water content and other macroporosity indicators, except for the total number of macropores, exhibited a significant positive correlation. Additionally, organic matter content and various soil macropore indicators showed a highly significant positive correlation. (3) The saturated hydraulic conductivity of the soil ranged from 2.32 to 3.79 mm·min^-1. The variation in saturated hydraulic conductivity was determined by the soil macroporous volume ratio (82%), macroporous area ratio (68%), the fourth power of the average radius of macroporous space (79%), and the total number of macropores (43%). (4) Under the same habitat conditions in the study area, planting sand-fixing plants significantly improved the water infiltration ability of the soil compared to bare land. Among the three sand-fixing plants studied, their water infiltration abilities ranked as follows, from strongest to weakest: Haloxylon ammodendron, Calligonum mongolicum, and Nitraria sphaerocarpa.

Key words: desert-oasis transition zone, sand fixing plants, water penetration curve, soil macropores

LI Jianan, ZHOU Chengqian, HU Guanglu, YANG Penghua, LI Haochen. Characteristics and influencing factors of soil macropores in the root zone of sand-fixing plants in the desert-oasis transition zone[J].Arid Zone Research, 2024, 41(12): 2015-2026.

Figures/Tables 8

Fig. 1

Tab. 1

Fig. 2

Fig. 3

Tab. 2

Tab. 3

Tab. 4

Fig. 4

References 35

[1]	王蕙, 赵文智, 常学向. 黑河中游荒漠绿洲过渡带土壤水分与植被空间变异[J]. 生态学报, 2007, 27(5): 1731-1739.
	[Wang Hui, Zhao Wenzhi, Chang Xuexiang. Spatial variability of soil moisture and vegetation in desert-oasis ecotone in the middle reaches of Heihe River Basin[J]. Acta Ecologica Sinica, 2007, 27(5): 1731-1739. ]
[2]	Ji S, Bai X, Qiao R, et al. Width identification of transition zone between desert and oasis based on NDVI and TCI[J]. Scientific Reports, 2020, 10(1): 8672-8679. doi: 10.1038/s41598-020-65286-5 pmid: 32457337
[3]	魏亚娟, 党晓宏, 汪季, 等. 吉兰泰荒漠绿洲过渡带白刺灌丛沙堆形态示量特征[J]. 干旱区研究, 2023, 40(3): 403-411. doi: 10.13866/j.azr.2023.03.07
	[Wei Yajuan, Dang Xiaohong, Wang Ji, et al. Morphological characteristics of Nitraria tangutorum nebkhas in Jilantai desert-oasis ecotone[J]. Arid Zone Research, 2023, 40(3): 403-411. ] doi: 10.13866/j.azr.2023.03.07
[4]	Pang Y, Wu B, Jia X, et al. Wind-proof and sand-fixing effects of Artemisia ordosica with different coverages in the Mu Us Sandy Land, northern China[J]. Journal of Arid Land, 2022, 14(8): 877-893.
[5]	高君亮, 罗凤敏, 刘泓鑫, 等. 乌兰布和沙漠草方格-灌木林对土壤水分物理性质的影响[J]. 干旱区研究, 2023, 40(5): 737-746. doi: 10.13866/j.azr.2023.05.06
	[Gao Junliang, Luo Fengmin, Liu Hongxin, et al. Effects of typical ecological projects of desertification combating on soil physical properties in Ulan Buh Desert[J]. Arid Zone Research, 2023, 40(5): 737-746. ] doi: 10.13866/j.azr.2023.05.06
[6]	李新荣, 马凤云, 龙立群, 等. 沙坡头地区固沙植被土壤水分动态研究[J]. 中国沙漠, 2001, 21(3): 3-8.
	[Li Xinrong, Ma Fengyun, Long Liqun, et al. Soil water dynamics under sand-fixing vegetation in Shapotou area[J]. Journal of Desert Research, 2001, 21(3): 3-8. ]
[7]	王正宁, 王新平. 荒漠灌丛树干茎流及其入渗、再分配特征[J]. 中国沙漠, 2010, 30(5): 1108-1113.
	[Wang Zhengning, Wang Xinping. Stemflow of Caragana korshinskii and its infiltration and redistribution in desert environment[J]. Journal of Desert Research, 2010, 30(5): 1108-1113. ]
[8]	孟晨, 牛健植, 骆紫藤, 等. 华北土石山区森林土壤大孔隙对土壤理化性质及根系的响应[J]. 水土保持学报, 2019, 33(3): 94-100.
	[Meng Chen, Niu Jianzhi, Luo Ziteng, et al. Response of soil macropore to soil phychemical properties and root in forest in rocky mountain area of North China[J]. Journal of Soil and Water Conservation, 2019, 33(3): 94-100. ]
[9]	高朝侠, 徐学选, 赵娇娜, 等. 土壤大孔隙流研究现状与发展趋势[J]. 生态学报, 2014, 34(11): 2801-2811.
	[Gao Chaoxia, Xu Xuexuan, Zhao Jiaona, et al. Review on macropore flow in soil[J]. Acta Ecologica Sinica, 2014, 34(11): 2801-2811. ]
[10]	Rab M A, Haling R E, Aarons S R, et al. Evaluation of X-ray computed tomography for quantifying macroporosity of loamy pasture soils[J]. Geoderma, 2014, 213: 460-470.
[11]	Tian M, Qin S, Whalley W R, et al. Changes of soil structure under different tillage management assessed by bulk density, penetrometer resistance, water retention curve, least limiting water range and X-ray computed tomography[J]. Soil and Tillage Research, 2022, 221: 105420.
[12]	蔡太义, 李玮, 王志刚, 等. 长期施肥对砂姜黑土大孔隙形态和数量特征的影响[J]. 农业资源与环境学报, 2022, 39(6): 1106-1114.
	[Cai Taiyi, Li Wei, Wang Zhigang, et al. Effects of long-term fertilization on the morphology and quantity of macropores in vertiso[J]. Journal of Agricultural Resources and Environment, 2022, 39(6): 1106-1114. ]
[13]	Zhang Z B, Peng X, Zhou H, et al. Characterizing preferential flow in cracked paddy soils using computed tomography and breakthrough curve[J]. Soil and Tillage Research, 2015, 146: 53-65.
[14]	孙程鹏, 赵文智. 土地利用对河西走廊荒漠绿洲区土壤入渗的影响[J]. 中国沙漠, 2021, 41(6): 148-156. doi: 10.7522/j.issn.1000-694X.2021.00081
[35]	[Zhang Jiaming, Xu Zemin. A dye tracer experiment to study macropore flow paths in unsaturated zone under different vegetation communities in Maka Mountain, China[J]. Journal of Jilin University (Earth Science Edition), 2013, 43(6): 1922-1935. ]
[36]	赵晨光, 李慧瑛, 鱼腾飞, 等. 腾格里沙漠东北缘人工植被对土壤物理性质的影响[J]. 干旱区研究, 2022, 39(4): 1112-1121. doi: 10.13866/j.azr.2022.04.12
	[Zhao Chenguang, Li Huiying, Yu Tengfei, et al. Effects of artificial vegetation construction on soil physical properties in the northeastern edge of Tengger Desert[J]. Arid Zone Research, 2022, 39(4): 1112-1121. ] doi: 10.13866/j.azr.2022.04.12
[37]	石辉, 王峰, 李秧秧. 黄土丘陵区人工油松林地土壤大孔隙定量研究[J]. 中国生态农业学报, 2007, 15(1): 28-32.
	[Shi Hui, Wang Feng, Li Yangyang. Quantitative studies on soil macropores under artificial Chinese pine(Pinus tabuleaformis Carr.) forest in loess hilly region[J]. Chinese Journal of Eco-Agriculture, 2007, 15(1): 28-32. ]
[38]	屈媛媛, 李梦瑶, 徐学选, 等. 内蒙古地区不同撂荒年限草地与沙棘地的渗透能力比较[J]. 水土保持通报, 2023, 43(3): 34-40.
	[Qu Yuanyuan, Li Mengyao, Xu Xuexuan, et al. Comparison of infiltration capacity between grass land of different time lengths of abandonment and Sea buckthorn land in Inner Mongolia[J]. Bulletin of Soil and Water Conservation, 2023, 43(3): 34-40. ]
[39]	孙志祥, 崔俊芳, 杨汝馨, 等. 横断山区森林土壤饱和导水率传递函数的评价与构建研究[J]. 土壤, 2022, 54(3): 594-601.
	[Sun Zhixiang, Cui Junfang, Yang Ruxin, et al. Evaluation and construction of pedo-transfer function of saturated hydraulic conductivity of forest soils in Hengduan Mountain Region[J]. Soils, 2022, 54(3): 594-601. ]
[14]	[Sun Pengcheng, Zhao Wenzhi. Effect of land use on soil infiltration in the desert-oasis of Hexi Corridor[J]. Journal of Desert Research, 2021, 41(6): 148-156. ] doi: 10.7522/j.issn.1000-694X.2021.00081
[15]	黄娟, 邓羽松, 马占龙, 等. 桂东南花岗岩丘陵区不同土地利用方式土壤大孔隙特征[J]. 水土保持学报, 2021, 35(2): 80-86, 95.
	[Huang Juan, Deng Yusong, Ma Zhanlong, et al. Characteristics of soil macropores in granite hilly region area with different land use types in Southeast Guangxi[J]. Journal of Soil and Water Conservation, 2021, 35(2): 80-86, 95. ]
[16]	王伟, 张洪江, 程金花, 等. 四面山阔叶林土壤大孔隙特征与优先流的关系[J]. 应用生态学报, 2010, 21(5): 1217-1223.
	[Wang Wei, Zhang Hongjiang, Cheng Jinhua, et al. Macropore characteristics and its relationships with the preferential flow in broad leaved forest soils of Simian Mountains[J]. Chinese Journal of Applied Ecology, 2010, 21(5): 1217-1223. ] pmid: 20707104
[17]	Iversen B V, Lamandé M, Torp S B, et al. Macropores and macropore transport: Relating basic soil properties to macropore density and soil hydraulic properties[J]. Soil Science, 2012, 177(9): 535-542.
[18]	Radulovich R, Solorzano E, Sollins P. Soil macropore size distribution from water breakthrough curves[J]. Soil Science Society of America Journal, 1989, 53(2): 556-559.
[19]	王金悦, 邓羽松, 李典云, 等. 连栽桉树人工林土壤大孔隙特征及其对饱和导水率的影响[J]. 生态学报, 2021, 41(19): 7689-7699.
	[Wang Jinyue, Deng Yusong, Li Dianyun, et al. Characteristics of soil macropores and their influence on saturated hydraulic conductivity of successive Eucalyptus plantation[J]. Acta Ecologica Sinica, 2021, 41(19): 7689-7699. ]
[20]	石辉, 陈凤琴, 刘世荣. 岷江上游森林土壤大孔隙特征及其对水分出流速率的影响[J]. 生态学报, 2005, 25(3): 507-512.
	[Shi Hui, Chen Fengqin, Liu Shirong. Macropores properties of forest soil and its influence on water effluent in the upper reaches of Minjiang River[J]. Acta Ecologica Sinica, 2005, 25(3): 507-512. ]
[21]	田香姣, 程金花, 杜士才, 等. 重庆四面山草地土壤大孔隙的数量和形态特征研究[J]. 水土保持学报, 2014, 28(2): 292-296.
	[Tian Xiangjiao, Cheng Jinhua, Du Shicai, et al. Study on number and morphological characteristics of soil macropores in grass land in Simian Mountain of Chongqing[J]. Journal of Soil and Water Conservation, 2014, 28(2): 292-296. ]
[22]	李松阳, 刘康妮, 余杭, 等. 云南省蒋家沟不同植被类型土壤物理性质对水分入渗特征的影响[J]. 山地学报, 2021, 39(6): 867-878.
	[Li Songyang, Liu Kangni, Yu Hang, et al. Different vegetation types in the Jiangjia Gully, Yunnan Province, China[J]. Mountain Research, 2021, 39(6): 867-878. ]
[23]	吕刚, 王洪禄, 黄龙. 辽西半干旱区森林土壤大孔隙特征研究[J]. 水土保持通报, 2012, 32(5): 176-181.
	[Lv Gang, Wang Honglu, Huang Long. A study on macropore properties of forest soil in semi-arid region of Western Liaoning Province[J]. Bulletin of Soil and Water Conservation, 2012, 32(5): 176-181. ]
[24]	金兆梁. 不同林龄樟子松人工林土壤优先流特征[D]. 阜新: 辽宁工程技术大学, 2020.
	[Jin Zhaoliang. Soil Preferential Flow Characteristics of Pinus sylvestris var. mongolica Plantations at Different Forest age[D]. Fuxin: Liaoning Technical University, 2020. ]
[25]	张伟, 马建刚, 王开德, 等. 滇西南不同土地利用方式坡地土壤大孔隙特征及与饱和导水率的关系[J]. 西北农林科技大学学报(自然科学版), 2023, 51(4): 84-93.
	[Zhang Wei, Ma Jiangang, Wang Kaide, et al. Characteristics of sloping soil macropores and its relationship with saturated hydraulic conductivity of different land use patterns in South West Yunnan[J]. Journal of Northwest A & F University (Natural Science Edition), 2023, 51(4): 84-93. ]
[26]	敖家坤, 牛健植, 谢宝元, 等. 土壤大孔隙结构对饱和导水率的影响[J]. 北京林业大学学报, 2021, 43(2): 102-112.
	[Ao Jiakun, Niu Jianzhi, Xie Baoyuan, et al. Influence of soil macropore structure on saturated hydraulic conductivity[J]. Journal of Beijing Forestry University, 2021, 43(2): 102-112. ]
[27]	尹本丰, 张元明, 娄安如. 灌丛移除对荒漠齿肋赤藓越冬过程中生理生化特性的影响[J]. 植物生态学报, 2016, 40(7): 723-734. doi: 10.17521/cjpe.2015.0441
	[Yin Benfeng, Zhang Yuanming, Lou Anru. Impacts of the removal of vascular plants on physiological and biochemical characteristics of Syntrichia caninervis during winter season in a temperate desert[J]. Chinese Journal of Plant Ecology, 2016, 40(7): 723-734. ] doi: 10.17521/cjpe.2015.0441
[28]	余海龙, 樊瑾, 牛玉斌, 等. 灌丛树干茎流与根区优先流对灌丛沙堆“土壤沃岛效应”的影响研究[J]. 草地学报, 2019, 27(1): 1-7. doi: 10.11733/j.issn.1007-0435.2019.01.001
	[Yu Hailong, Fan Jin, Niu Yubin, et al. Review on the influence of bushwood stem flow and root-induced preferential flow on the “soil fertile island effect” of nebkha[J]. Acta Agrestia Sinica, 2019, 27(1): 1-7. ] doi: 10.11733/j.issn.1007-0435.2019.01.001
[29]	赵月, 鲍雪莲, 梁超, 等. 压实对农田土壤特性的影响及应对措施[J]. 土壤通报, 2023, 54(6): 1457-1469.
	[Zhao Yue, Bao Xuelian, Liang Chao, et al. Effects of compaction on farmland soil properties of farms and prevention measures[J]. Chinese Journal of Soil Science, 2023, 54(6): 1457-1469. ]
[30]	巩炜, 胡广录, 付鹏程, 等. 干旱区荒漠-绿洲过渡带固沙植物的土壤水分入渗特征[J]. 中国沙漠, 2020, 40(5): 200-208. doi: 10.7522/j.issn.1000-694X.2020.00098
	[Gong Wei, Hu Guanglu, Fu Pengcheng, et al. Soil moisture infiltration characteristics of different sand-fixing plants in the desert-oasis transition zone in arid region of China[J]. Journal of Desert Research, 2020, 40(5): 200-208. ] doi: 10.7522/j.issn.1000-694X.2020.00098
[31]	胡广录, 刘鹏, 李嘉楠, 等. 黑河中游绿洲边缘三种景观类型土壤水分动态特征及影响因素[J]. 干旱区研究, 2024, 41(4): 550-565. doi: 10.13866/j.azr.2024.04.03
	[Hu Guanglu, Liu Peng, Li Jianan, et al. Characteristics of soil moisture dynamics and influencing factors of three landscape types at the oasis edge in the middle reaches of the Heihe River[J]. Arid Zone Research, 2024, 41(4): 550-565. ] doi: 10.13866/j.azr.2024.04.03
[32]	李雪转, 樊贵盛. 土壤有机质含量对土壤渗透能力及参数影响的试验研究[J]. 农业工程学报, 2006, 22(3): 188-190.
	[Li Xuezhuan, Fan Guisheng. Influence of organic matter content on infiltration capacity and parameter in field soils[J]. Transactions of the Chinese Society of Agricultural Engineering, 2006, 22(3): 188-190. ]
[33]	王彬俨, 程金花, 张洪江, 等. 北京市昌平区农地土壤大孔隙形成的影响因素分析[J]. 西北农林科技大学学报(自然科学版), 2013, 41(5): 81-86.
	[Wang Binyan, Cheng Jinhua, Zhang Hongjiang, et al. Factors influencing the macropores properties of agricultural land in Changping District, Beijing[J]. Journal of Northwest A & F University (Natural Science Edition), 2013, 41(5): 81-86. ]
[34]	田昕, 赵勇钢, 刘啟霞, 等. 黄土丘陵区长期种植柠条坡地土壤饱和导水率及其影响因素[J]. 中国水土保持科学, 2023, 21(4): 20-27.
	[Tian Xin, Zhao Yonggang, Liu Qixia, et al. Soil saturated hydraulic conductivity and its influencing factors of long-term planting of Lime strips on slopes in loess hilly areas[J]. Science of Soil and Water Conservation, 2023, 21(4): 20-27. ]
[35]	张家明, 徐则民. 马卡山不同植被群落下非饱和带大孔隙流路径示踪试验[J]. 吉林大学学报(地球科学版), 2013, 43(6): 1922-1935.

固沙植物种类	编号	冠幅/m	株高/m	造林时间	立地条件（固定沙丘）	采样时间
梭梭（人工）	SS1	2.47±0.23	2.74±0.17	1990—1992年	丘间低地	6月
	SS2	2.63±0.35	2.53±0.21	1990—1992年	丘间低地	7月
	SS3	2.53±0.33	2.87±0.13	1990—1992年	背风坡	8月
沙拐枣（人工）	SG1	2.42±0.22	1.85±0.10	1990—1992年	丘间低地	6月
	SG2	2.93±0.25	2.11±0.15	1990—1992年	丘间低地	7月
	SG3	2.63±0.18	1.96±0.09	1990—1992年	背风坡	8月
泡泡刺（天然）	PP1	3.88±0.29	0.45±0.02	-	丘间低地	6月
	PP2	4.16±0.22	0.51±0.01	-	丘间低地	7月
	PP3	3.95±0.26	0.48±0.02	-	背风坡	8月
裸地	CK	-	-	-	丘间低地	6—8月

固沙植物类型	土层深度/cm	大孔隙半径范围及数量								大孔隙总数量 /(10⁴个·m^-2)
固沙植物类型	土层深度/cm	半径范围/mm	数量 /(10³个·m^-2)	半径范围/mm	数量 /(10³个·m^-2)	半径范围/mm	数量 /(10³个·m^-2)	半径范围/mm	数量 /(10⁴个·m^-2)	大孔隙总数量 /(10⁴个·m^-2)
梭梭	0~10	1.6~1.1	5.94	1.1~0.9	5.09	0.9~0.7	10.91	0.7~0.5	2.63	4.82
	10~20	1.5~1.1	4.43	1.1~0.9	6.10	0.9~0.7	10.39	0.7~0.5	2.48	4.57
	20~30	1.4~1.1	4.32	1.1~0.9	4.72	0.9~0.7	9.52	0.7~0.5	2.41	4.27
	30~40	1.3~1.1	3.04	1.1~0.9	4.45	0.9~0.7	10.39	0.7~0.5	2.31	4.10
	40~50	1.3~1.1	2.82	1.1~0.9	4.09	0.9~0.7	8.51	0.7~0.5	2.23	3.77
沙拐枣	0~10	1.5~1.1	3.65	1.1~0.9	4.49	0.9~0.7	11.51	0.7~0.5	2.53	4.49
	10~20	1.4~1.1	4.34	1.1~0.9	4.85	0.9~0.7	10.06	0.7~0.5	2.54	4.47
	20~30	1.3~1.1	2.99	1.1~0.9	4.40	0.9~0.7	10.32	0.7~0.5	2.30	4.08
	30~40	1.2~1.1	2.74	1.1~0.9	7.25	0.9~0.7	9.67	0.7~0.5	2.20	4.17
	40~50	1.2~1.1	1.55	1.1~0.9	3.71	0.9~0.7	8.99	0.7~0.5	2.14	3.56
泡泡刺	0~10	1.4~1.1	4.31	1.1~0.9	4.75	0.9~0.7	9.80	0.7~0.5	2.50	4.39
	10~20	1.4~1.1	3.79	1.1~0.9	4.38	0.9~0.7	8.99	0.7~0.5	2.33	4.04
	20~30	1.3~1.1	2.33	1.1~0.9	4.03	0.9~0.7	9.70	0.7~0.5	2.26	3.86
	30~40	1.3~1.1	2.50	1.1~0.9	3.66	0.9~0.7	7.96	0.7~0.5	2.15	3.56
	40~50	1.2~1.1	1.44	1.1~0.9	3.46	0.9~0.7	7.00	0.7~0.5	2.00	3.19
裸地	0~10	1.4~1.1	3.70	1.1~0.9	4.01	0.9~0.7	8.42	0.7~0.5	2.08	3.80
	10~20	1.3~1.1	3.24	1.1~0.9	2.63	0.9~0.7	7.96	0.7~0.5	2.08	3.57
	20~30	1.2~1.1	3.38	1.1~0.9	2.66	0.9~0.7	7.77	0.7~0.5	2.08	3.46
	30~40	1.2~1.1	1.96	1.1~0.9	2.26	0.9~0.7	8.14	0.7~0.5	1.99	3.22
	40~50	-	-	1.1~0.9	3.89	0.9~0.7	7.44	0.7~0.5	1.86	2.99

固沙植物类型	土层深度/cm	平均半径/mm	大孔隙面积比/(m²·m^-2)	大孔隙体积比/(m³·m^-3)	饱和导水率/(mm·min^-1)
梭梭	0~10	0.75±0.04Aa	8.56±0.37Aa	0.84±0.04Aa	3.79±0.18Aa
	10~20	0.75±0.05Aa	8.01±0.30Aa	0.74±0.05Ba	3.57±0.12Ba
	20~30	0.71±0.05ABa	6.78±0.81Ba	0.66±0.02Cab	3.29±0.04Ca
	30~40	0.66±0.06ABa	5.68±0.38Cab	0.65±0.04Ca	3.17±0.06Ca
	40~50	0.62±0.06Ba	4.57±0.18Da	0.57±0.02Da	2.86±0.12Da
沙拐枣	0~10	0.73±0.07Aa	7.49±0.43Ab	0.71±0.04Aab	3.61±0.16Aa
	10~20	0.72±0.07Aa	7.26±0.58Aa	0.73±0.03Aa	3.32±0.20Ba
	20~30	0.65±0.01Aba	5.38±0.07Bb	0.59±0.06BCb	3.15±0.05BCb
	30~40	0.64±0.04ABa	5.04±0.42Bb	0.60±0.04Bab	3.03±0.09CDab
	40~50	0.60±0.02Ba	4.11±0.30Cab	0.50±0.03Cb	2.80±0.11Da
泡泡刺	0~10	0.72±0.05Aa	8.07±0.30Aab	0.72±0.05Ab	3.43±0.11Aab
	10~20	0.71±0.05Aa	7.20±0.06Ba	0.62±0.05Bb	3.26±0.06ABa
	20~30	0.63±0.03ABa	5.03±0.41Db	0.68±0.04ABa	3.21±0.08Bab
	30~40	0.63±0.07ABa	5.95±0.39Ca	0.53±0.02Cbc	2.81±0.05Cbc
	40~50	0.59±0.02Ba	3.67±0.22Ebc	0.45±0.03Cbc	2.55±0.07Db
裸地	0~10	0.71±0.04Aa	6.07±0.15Ac	0.59±0.05Ab	3.10±0.26Ab
	10~20	0.68±0.01ABa	5.15±0.17Bb	0.51±0.03Bc	2.81±0.05ABb
	20~30	0.63±0.03BCa	4.27±0.31Cb	0.44±0.01BCc	2.78±0.07ABc
	30~40	0.59±0.02Ca	5.07±0.10Bb	0.48±0.02Cc	2.63±0.25BCc
	40~50	0.58±0.01Ca	3.19±0.34Dc	0.39±0.03Dc	2.32±0.04Cc

大孔隙特征指标	土壤容重/(g·cm^-3)	总孔隙度/%	饱和含水率/%	有机质/(g·kg^-1)	不同径级土壤颗粒(d)
大孔隙特征指标	土壤容重/(g·cm^-3)	总孔隙度/%	饱和含水率/%	有机质/(g·kg^-1)	d<0.25 mm	0.25 mm<d<0.5 mm	d>0.5 mm
总数量	-0.425	0.362	0.373	0.666^**	-0.105	0.02	0.215
平均半径	-0.840^**	0.654^**	0.709^**	0.790^**	0.059	-0.131	0.083
面积比	-0.729^**	0.596^**	0.632^**	0.807^**	0.004	-0.084	0.133
体积比	-0.616^**	0.444	0.485^*	0.891^**	0.061	-0.08	0.03

Characteristics and influencing factors of soil macropores in the root zone of sand-fixing plants in the desert-oasis transition zone

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 8

References 35

Related Articles 0

Metrics

Comments

Recommended 0