Effects of stockpiling methods on root activity in stripped alpine meadows of the Qinghai-Tibet Plateau

doi:10.11686/cyxb2024356

Abstract

Abstract:

With the increasing rate of economic development in the Qinghai-Tibet Plateau， particularly the construction of photovoltaic power stations， meadow conservation faces significant challenges. This study systematically evaluated the impact of different stockpiling methods on the root activity of stripped alpine meadows on the Qinghai-Tibet Plateau， aiming to identify the pattern that most effectively preserved root activity. Six stockpiling methods were tested： flat-laying， hollow， scaffold， three-layer overlapping， five-layer overlapping， and a soil and water conservation scaffold （hereafter referred to as a “conservation scaffold”）. Soil physicochemical properties and meadow root activity under the six stockpiling methods were comprehensively analyzed to assess their effectiveness in protecting stripped meadows. Key soil properties， including pH， organic carbon content， total nitrogen content， total potassium content， total phosphorus content， available phosphorus content， available potassium content， and alkaline hydrolyzable nitrogen content， were measured， along with triphenyltetrazolium chloride （TTC， mg·kg?1·h?1） reduction intensity as an indicator of root activity. The relationships between these indicators and root activity were also examined. The results show that the different stockpiling methods had limited influence on soil physicochemical properties. However， the conservation scaffold showed a significant advantage in maintaining meadow root activity， with root TTC reduction intensity as follows： Conservation scaffold （5.52 mg·kg?1·h?1）>scaffold （4.52 mg·kg?1·h?1）>hollow （4.02 mg·kg?1·h?1）>flat-laying （3.74 mg·kg?1·h?1）>five-layer overlapping （3.71 mg·kg?1·h?1）>three-layer overlapping （3.54 mg·kg?1·h?1）. Soil potassium level （total potassium and available potassium） was strongly associated with promotion of root growth， increased soil respiration rate， and enhanced stress resistance， while soil pH， organic carbon content， and phosphorus had weaker associations with root activity. Overall， this study reveals the effects of different photovoltaic panel installation patterns on the root activity of stripped meadows， providing scientific data to support meadow ecological restoration and sustainable development planning.

Key words: meadow ecosystem, stockpiling methods, root activity, influencing factors, ecological restoration

Yu-gang GENG, Hong-mei YANG, Wen-wu WANG, Rui-jie LUO, Bao-guo ZHAO, Jiang-hong CHEN, Chang-sheng QIN, Rui-yin CHEN. Effects of stockpiling methods on root activity in stripped alpine meadows of the Qinghai-Tibet Plateau[J]. Acta Prataculturae Sinica, 2025, 34(8): 79-87.

Figures/Tables 4

References 30

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堆存方式 Stockpiling method	编号Number	层 Layer	描述 Description	优缺点 Advantage and disadvantage
平铺法 Flat-laying method	PP1	1	将草甸单层平铺在指定位置。Lay the turf flat in a single layer at the designated location.	优点：根系活性保持较好，回铺后恢复快；缺点：占地面积较大。Advantages： The root system maintains good activity and recovers quickly after re-laying； Disadvantages： It occupies a relatively large area.
镂空法 Hollow method	LK3	3	利用自身刚度使重叠堆放的草甸保持镂空。Utilize its own rigidity to keep the overlapped turf stacked with ventilation gaps.	优点：堆存容量较大，通风好；缺点：对草甸自身刚性有要求，且保水效果一般。Advantages： The stockpiling capacity is relatively large and the ventilation is good； Disadvantages： There are requirements for the rigidity of the turf itself， and the water retention effect is average.
支架法 Scaffold method	ZJ3	3	采用铝合金支架摆放草甸，形成3层堆存结构。Arrange the turf using aluminum alloy brackets to form a 3-layer stockpiling structure.	优点：外观整洁，通风好；缺点：保水效果较差。Advantages： Neat appearance and good ventilation； Disadvantages： Poor water retention.
三层重叠法 Three-layer overlapping method	CD3	3	将草甸重叠3层堆放。Stack the turf in three overlapping layers.	优点：占地较少，保水性能好；缺点：通风效果差。Advantages： Requires less space and has good water retention； Disadvantages： Poor ventilation.
五层重叠法 Five-layer overlapping method	CD5	5	将草甸重叠5层堆放。Stack the turf in five overlapping layers.	优点：占地较少，堆存容量较大，保水性能好；缺点：通风效果差，底层承重大。Advantages： Takes up less space， has a large stockpiling capacity， and offers good water retention； Disadvantages： Poor ventilation and high load-bearing on the bottom layer.
水保支架法 Conservation scaffold method	SZ3	3	利用钢管支架支撑草甸，形成3层堆存结构，下垫面铺设三维网。Support the turf with steel pipe brackets to form a 3-layer stockpiling structure， with a three-dimensional mesh laid underneath.	优点：堆存后景观效果较整洁，通风和保水效果好；缺点：成本较高。Advantages： The landscape effect after stockpiling is neat， with good ventilation and water retention； Disadvantages： The cost is relatively high.

堆存方式 Stockpiling method	编号Number	层 Layer	描述 Description	优缺点 Advantage and disadvantage
平铺法 Flat-laying method	PP1	1	将草甸单层平铺在指定位置。Lay the turf flat in a single layer at the designated location.	优点：根系活性保持较好，回铺后恢复快；缺点：占地面积较大。Advantages： The root system maintains good activity and recovers quickly after re-laying； Disadvantages： It occupies a relatively large area.
镂空法 Hollow method	LK3	3	利用自身刚度使重叠堆放的草甸保持镂空。Utilize its own rigidity to keep the overlapped turf stacked with ventilation gaps.	优点：堆存容量较大，通风好；缺点：对草甸自身刚性有要求，且保水效果一般。Advantages： The stockpiling capacity is relatively large and the ventilation is good； Disadvantages： There are requirements for the rigidity of the turf itself， and the water retention effect is average.
支架法 Scaffold method	ZJ3	3	采用铝合金支架摆放草甸，形成3层堆存结构。Arrange the turf using aluminum alloy brackets to form a 3-layer stockpiling structure.	优点：外观整洁，通风好；缺点：保水效果较差。Advantages： Neat appearance and good ventilation； Disadvantages： Poor water retention.
三层重叠法 Three-layer overlapping method	CD3	3	将草甸重叠3层堆放。Stack the turf in three overlapping layers.	优点：占地较少，保水性能好；缺点：通风效果差。Advantages： Requires less space and has good water retention； Disadvantages： Poor ventilation.
五层重叠法 Five-layer overlapping method	CD5	5	将草甸重叠5层堆放。Stack the turf in five overlapping layers.	优点：占地较少，堆存容量较大，保水性能好；缺点：通风效果差，底层承重大。Advantages： Takes up less space， has a large stockpiling capacity， and offers good water retention； Disadvantages： Poor ventilation and high load-bearing on the bottom layer.
水保支架法 Conservation scaffold method	SZ3	3	利用钢管支架支撑草甸，形成3层堆存结构，下垫面铺设三维网。Support the turf with steel pipe brackets to form a 3-layer stockpiling structure， with a three-dimensional mesh laid underneath.	优点：堆存后景观效果较整洁，通风和保水效果好；缺点：成本较高。Advantages： The landscape effect after stockpiling is neat， with good ventilation and water retention； Disadvantages： The cost is relatively high.

指标Indicator	PP1	LK3	ZJ3	CD3	CD5	SZ3	P值P value
pH	4.99	4.90	5.09	5.11	4.98	4.96	>0.05
有机碳Organic carbon （%）	5.30	4.64	5.88	4.57	4.48	5.66	>0.05
全氮Total nitrogen （%）	0.36	0.32	0.41	0.31	0.31	0.39	>0.05
全钾Total potassium （%）	1.33	1.29	1.25	1.27	1.21	1.22	>0.05
全磷Total phosphorus （mg·kg^-1）	836.85	761.71	872.27	724.88	681.63	864.74	>0.05
有效磷Available phosphorus （mg·kg^-1）	2.31	1.97	1.86	1.72	2.16	1.57	>0.05
速效钾Available potassium （mg·kg^-1）	179.35	123.74	216.24	163.56	161.09	193.74	>0.05
碱解氮Alkaline hydrolyzable nitrogen （mg·kg^-1）	329.27	316.13	395.31	296.79	294.37	381.45	>0.05

指标Indicator	PP1	LK3	ZJ3	CD3	CD5	SZ3	P值P value
pH	4.99	4.90	5.09	5.11	4.98	4.96	>0.05
有机碳Organic carbon （%）	5.30	4.64	5.88	4.57	4.48	5.66	>0.05
全氮Total nitrogen （%）	0.36	0.32	0.41	0.31	0.31	0.39	>0.05
全钾Total potassium （%）	1.33	1.29	1.25	1.27	1.21	1.22	>0.05
全磷Total phosphorus （mg·kg^-1）	836.85	761.71	872.27	724.88	681.63	864.74	>0.05
有效磷Available phosphorus （mg·kg^-1）	2.31	1.97	1.86	1.72	2.16	1.57	>0.05
速效钾Available potassium （mg·kg^-1）	179.35	123.74	216.24	163.56	161.09	193.74	>0.05
碱解氮Alkaline hydrolyzable nitrogen （mg·kg^-1）	329.27	316.13	395.31	296.79	294.37	381.45	>0.05

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