塞罕坝华北落叶松人工林间伐和混交改造对大型土壤动物群落结构的影响

doi:10.11707/j.1001-7488.20191117

Abstract

Abstract:

Objective: The effects of thinning and mixed transformation of Larix principis-rupprechtii plantations in Saihanba on the communities and biodiversities of soil macro-fauna were comparatively investigated to provide a theoretical basis for the sustainable management of the regional plantations. Method: In this experiment, three types of forests, including a unmanaged larch pure forest (CK), a thinning larch forest (TH) and a larch-birch mixed forest (M), were targeted. From May to September, 2014, the soil macro-faunal community was investigated by hand picking method to study the differences of structure composition, spatial pattern, biodiversity and functional groups composition of soil fauna in different managed forests and their influencing factors. Result: A total of 1 405 soil macro-fauna were obtained and identified, and they belong to 2 phyla, 4 classes, 12 orders, 55 groups. The dominant groups were Lumbricina, Curculionidae larvae and Chrysomelidae larvae. In general, the group number of soil macro-fauna in TH and M was significantly higher than that in CK (P < 0.05), and the density of soil fauna in TH was also significantly higher than that in CK (P < 0.05). The group number of soil macro-fauna showed a gradually increasing trend along the soil profile in the three forests. The group number of soil fauna in litter layers and the mean density in 0-10 cm soil layer in M and TH were significantly higher than those in CK. In addition, thinning and mixed transformation improved the diversity indices of soil macro-fauna, and the Shannon-Wiener diversity index of M was significantly higher than that of CK (P < 0.05). Among functional groups, phytophagous had the highest density (47.19%), followed by saprophagous (33.31%). Predatory (19) and phytophagous (18) had more group numbers. The results of multivariate analysis (MANOVA) showed that the management measures, soil layers and seasons significantly influenced the four functional groups composition (P < 0.05); in particular, thinning and mixed transformation significantly increased the group numbers of phytophagous. The results of redundancy analysis (RDA) indicated that the distribution of soil macro-fauna in litter layer was significantly correlated with the organic carbon (P=0. 03) and C/N (P < =0.08). The soil macro-fauna in soil layers were significantly correlated with soil water content (P < =0.008), pH (P=0. 012) and soil bulk density (P=0. 062). Conclusion: After thinning and mixed management, the changes in stand structure and microenvironments in the forest enhanced soil macro-faunal community structure and biodiversity, especially the increase of group numbers of functional groups may be more conducive to the early pulverization and decomposition of litter.

Key words: soil macro-fauna, community structure, functional groups, management practices, Larix principis-rupprechtii plantation

CLC Number:

S718.52⁺1.1

Mengmei Hu,Long Tian,Yanan Wu,Jinyu Yang,Xiaocui Lü,Xuanrui Huang. Influences of Thinning and Mixed Transformation of Larix principis-rupprechtii Plantations on the Community Structure of Soil Macro Faunal in Saihanba Area[J]. Scientia Silvae Sinicae, 2019, 55(11): 153-162.

Figures/Tables 7

Table 1

Appendix 1

Composition of soil macro-fauna"

类群Group	未经营CK		间伐TH		混交M		总个体数Total	百分比Percentage(%)
类群Group	个体数Individuals	百分比Percentage(%)	个体数Individuals	百分比Percentage(%)	个体数Individuals	百分比Percentage(%)	总个体数Total	百分比Percentage(%)
正蚓目Lumbricida	63	20	57	9.56	26	5.26	146	10.39
颤蚓目Tubificida	9	2.85	1	0.17	18	3.64	28	1.99
石蜈蚣目Lithobiomorpha	13	4.13	28	4.69	12	2.43	53	3.77
地蜈蚣目Geophilomorpha	4	1.27	5	0.84	9	1.82	18	1.28
盲蛛目Opiliones	5	1.59	2	0.34	3	0.61	10	0.71
球蛛科Theridiidae	—	—	4	0.67	5	1.01	9	0.64
漏斗蛛科Agelenidae	2	0.63	1	0.17	—	—	3	0.21
肖蛸科Tetragnathidae	—	—	2	0.34	1	0.20	3	0.21
圆颚蛛科Corinnidae	—	—	1	0.17	—		1	0.07
平腹蛛科Gnaphosidae	—	—	—	—	2	0.41	2	0.14
狼蛛科Lycosidae	—	—	7	1.17	7	1.42	14	1.00
蟹蛛科Thomisidae	—	—	3	0.50	4	0.81	7	0.50
跳蛛科Salticidae	—	—	—	—	1	0.20	1	0.07
圆珠科Araneidae	5	1.59	2	0.34	4	0.81	11	0.78
伪蝎目Pseudoscorpiones	—	—	1	0.17	—	—	1	0.07
啮虫目Psocoptera	—	—	1	0.17	—	—	1	0.07
叶蝉科Cicadellidae	2	0.63	8	1.34	2	0.41	12	0.86
同蝽科Acanthosomatidae	—	—	1	0.17	14	2.83	15	1.07
蚜科Aphididae	1	0.32	1	0.17	1	0.20	3	0.21
长蝽科Lygaeidae	—	—	—	—	1	0.20	1	0.07
奇蝽科Enicocephalidae	—	—	1	0.17	—	—	1	0.07
盲蝽科Miridae	1	0.32	2	0.34	8	1.62	11	0.78
土蝽科Cydnidae	—	—	2	0.34	1	0.20	3	0.21
蝽科Pentatomidae	—	—	3	0.50	3	0.61	6	0.43
步甲科/成Carabidae/A	8	2.54	18	3.02	34	6.88	60	4.27
阎甲科/成Histeridae/A	—	—	1	0.17	—	—	1	0.07
象甲科/成Curculionidae/A	—	—	2	0.34	—	—	2	0.14
瓢甲科/成Coccinellidae/A	—	—	4	0.67	1	0.20	5	0.36
金龟科/成Scarabaeidae/A	—	—	—	—	1	0.20	1	0.07
叶甲科/成Chrysomelidae/A	4	1.27	27	4.53	14	2.84	45	3.21
拟花蚤科/成Scraptiidae/A	—	—	—	—	1	0.20	1	0.07
隐翅甲科/成Staphylinidae/A	1	0.32	5	0.84	2	0.41	8	0.57
埋葬甲科/成Silphidae/A	—	—	—	—	1	0.20	1	0.07
水龟甲科/成Hydrophilidae/A		—	2	0.34			2	0.14
水龟甲科/幼Hydrophilidae/L	2	0.63	—	—	—	—	2	0.14
阎甲科/幼Histeridae/L	1	0.32	—	—	—	—	1	0.07
隐翅甲科/幼Staphylinidae/L	1	0.32	10	1.68	10	2.02	21	1.50
叶甲科/幼Chrysomelidae/L	68	21.59	167	28.02	61	12.35	296	21.07
金龟科/幼Scarabaeidae/L	—	—	1	0.17	—	—	1	0.07
歩甲科/幼Carabidae/L	1	0.32	—	—	—	—	1	0.07
象甲科/幼Curculionidae/L	33	10.47	110	18.45	126	25.51	269	19.15
长角亚目/幼Nematocera/L	16	5.08	44	7.38	35	7.09	95	6.76
短角亚目/幼Brachycera/L	35	11.11	39	6.54	57	11.54	131	9.33
芒角亚目/幼Aristocera/L	18	5.71	9	1.51	7	1.42	34	2.42
短角亚目Brachycera	1	0.32	—	—	—	—	1	0.07
长角亚目Nematocera	1	0.32	—	—	1	0.20	2	0.14
蚁科Formicidae	1	0.32	6	1.00	7	1.42	14	1.00
胡蜂科Vespidae	—	—	—	—	1	0.20	1	0.07
叶蜂科Tenthredinidae	—	—	2	0.34	3	0.61	5	0.36
姬蜂科Lchneumonidae	3	0.95	3	0.50	1	0.20	7	0.50
小卷叶蛾科/幼Olethreutidae/L	1	-0.32	—	—	—	—	1	0.07
卷叶蛾科/幼Tortricidae/L	1	0.32	—	—	—	—	1	0.07
夜蛾科/幼Noctuidae/L	—	—	2	0.34	4	0.81	6	0.43
尺蛾科/幼Geometridae/L	14	4.44	10	1.68	5	1.01	29	2.07
舟蛾科/幼Notodontidae/L	—	—	1	0.17	—	—	1	0.07
总个体数Total individuals	315	100	596	100	494	100	1 405	100
总类群数Total group number	29	—	41	—	39	—	55	—

Appendix 1

Fig.1

Table 2

Table 3

Table 4

Fig.2

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林分特征Forest characteristics	未经营CK	间伐TH	混交M
林龄Forest age/a	28	28	28
乔木密度Forest density/(tree·hm^-2)	2 082±142.03^a	1 015±55.67^b	1 170±75.50^b
平均树高Mean tree height/m	11.00±0.23^b	13.80±0.31^a	10.53±1.12^b
平均胸径Mean DBH/cm	14.80±0.06^b	19.76±1.31^a	13.94±0.38^b
郁闭度Canopy closure(%)	71.67±2.33^a	59.00±3.01^b	65.33±2.03^ab
土壤pH Soil pH	6.09±0.02^a	6.12±0.02^a	6.06±0.03^a
土壤全氮含量Soil total nitrogen/(g·kg^-1)	1.80±0.01^a	2.11±0.02^a	1.24±0.02^b
土壤全碳含量Soil total carbon/(g·kg^-1)	25.31±1.54^a	22.49±1.15^a	16.65±1.39^b
土壤含水量Soil water content(%)	17.50±1.21^a	17.11±1.53^a	17.65±0.01^a
土壤密度Soil density/(g·cm^-3)	0.70±0.07^a	0.73±0.07^a	0.75±0.06^a
凋落物含水量Litter water content(%)	39.00±4.04^a	33.33±5.24^a	29.00±1.16^a
凋落物厚度Litter depth/cm	6.00±0.41^a	6.13±0.21^a	5.27±0.29^a
凋落物生物量Litter biomass/(kg·m^-2)	5.90±0.72^a	5.98±0.59^a	4.97±0.51^a
凋落物全氮含量Litter total nitrogen/(g·kg^-1)	7.91±0.05^b	7.82±0.02^b	12.24±0.08^a
凋落物全碳含量Litter total carbon/(g·kg^-1)	168.70±4.13^a	171.40±13.19^a	150.90±1.52^a

经营样地 Plot	月份 Month	类群数Group numbers			平均密度Mean density/(ind·m^-2)
经营样地 Plot	月份 Month	凋落物层 Litter layer	0~10 cm土层 0-10 cm layer	10~20 cm土层 0-20 cm layer	凋落物层 Litter layer	0~10 cm土层 0-10 cm layer	10~20 cm土层 10-20 cm layer
未经营CK	5月May	6.00±1.15^Ba	6.00±0.00^Aa	2.00±0.58^Bb	14.08±3.65^Aa	17.04±2.97^Aa	11.85±2.60^Aa
	7月July	6.00±1.00^Aa	5.00±0.58A^ab	2.00±0.58^Bb	13.71±5.46^Aa	19.26±5.46^Ba	13.71±1.62^Ba
	9月Sep.	4.33±1.76^Ba	3.33±0.67^Aa	3.33±0.33^Aa	16.67±8.98^Aa	6.30±1.85^Aa	4.08±0.74^Aa
间伐TH	5月May	12.00±2.89^Aa	7.67±1.76^Ab	6.00±1.00^Ab	22.22±7.70^Aa	24.82±3.65^Aa	16.30±0.74^Aa
	7月July	9.00±1.15^Aa	7.00±1.15^Aab	4.67±0.88^ABb	27.41±6.46^Ab	52.97±10.23^Aa	53.71±28.51^Aa
	9月Sep.	6.33±0.33^ABa	3.00±1.15^Aa	4.00±0.58^Aa	10.37±2.67^Aa	5.56±2.57^Aa	7.41±2.06^Aa
混交M	5月May	7.33±1.76^Ba	6.33±2.33^Aa	4.33±1.45^ABa	12.97±2.97^Aa	31.85±7.76^Aa	7.04±2.60^Aa
	7月July	9.00±2.65^Aa	8.33±0.88^Aa	6.33±0.88^Aa	19.26±4.18^Ab	60.00±4.01^Aa	32.97±10.82^ABb
	9月Sep.	9.67±0.88^Aa	4.67±1.20b^Aa	2.00±0.58^Bb	18.89±2.57^Aa	12.22±1.29^Aa	3.71±1.48^Aa

经营样地Plot	H	J_d	H			J_d
经营样地Plot	H	J_d	5月May	7月July	9月Sep.	5月May	7月July	9月Sep.
未经营CK	2.21±0.01^B	0.90±0.01^{A A}	1.66±0.18^Ba	1.66±0.20^Aa	1.79±0.170^Aa	0.82±0.04^Aa	0.80±0.08^Aa	0.90±0.06^Aa
间伐TH	2.37±0.07^AB	0.87±0.03^A	2.36±0.22^Aa	1.75±0.13^Ab	2.13±0.07^Aab	0.91±0.03^Aa	0.83±0.06^Aa	0.93±0.02^Aa
混交M	2.52±0.09^A	0.91±0.01^A	2.32±0.12^ABa	1.89±0.15^Aa	2.22±0.16^Aa	0.95±0.02^Aab	0.83±0.01^Ab	0.95±0.01^Aa

项目Source	腐食性Saprophagous		捕食性Predatism		植食性Phytophagy		杂食性Omnivory
项目Source	平均密度 Density	类群 Group	平均密度 Density	类群 Group	平均密度 Density	类群 Group	平均密度 Density	类群 Group
经营措施Man.	0.804	0.067	0.040^*	0.161	0.067	0.003^**	0.005^**	0.141
土层Lay.	0.000^**	0.000^**	0.018^*	0.000^**	0.021^**	0.150	0.000^**	0.000^**
月份Mon.	0.004^**	0.021^*	0.036^*	0.052	0.000^**	0.169	0.025^*	0.029^*
经营措施×取样层次Man.×Lay.	0.065	0.194	0.690	0.539	0.489	0.331	0.095	0.578
月份×经营措施Mon.×Man.	0.092	0.001^**	0.295	0.392	0.064	0.105	0.044^*	0.103
月份×取样层次Mon.×Lay.	0.555	0.489	0.835	0.880	0.002^**	0.003^*	0.043^*	0.126
月份×经营措施×取样层次Mon.×Man.×Lay.	0.331	0.127	0.942	0.571	0.529	0.573	0.005^**	0.845

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Influences of Thinning and Mixed Transformation of Larix principis-rupprechtii Plantations on the Community Structure of Soil Macro Faunal in Saihanba Area

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