Acta Prataculturae Sinica ›› 2021, Vol. 30 ›› Issue (2): 59-68.DOI: 10.11686/cyxb2020129
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Da-cheng SONG1,2,3(), Li-de WANG1,2,3(), Hao WU1,3, Chun-rong WU1,2,3, He-ran ZHAO1,2,3, Sheng-hui HAN1,2,3, Bao-yi XU1,2,3
Received:
2020-03-24
Revised:
2020-04-22
Online:
2021-02-20
Published:
2021-01-19
Contact:
Li-de WANG
Da-cheng SONG, Li-de WANG, Hao WU, Chun-rong WU, He-ran ZHAO, Sheng-hui HAN, Bao-yi XU. A study of change in soil characteristics with recovery time in degraded grassland in Minqin[J]. Acta Prataculturae Sinica, 2021, 30(2): 59-68.
退耕年限Abandoned years (yr) | 海拔 Altitude (m) | 经纬度 Longitude/latitude | 群落优势种 Dominant plants species | 伴生种 Accompanying species |
---|---|---|---|---|
0 | 1304.0 | E 103°35′14.01″,N 39°03′52.00″ | 茴香Foeniculum vulgare | 藜Chenopodium album |
1 | 1305.9 | E 103°35′7.29″,N 39°03′57.53″ | 地肤K. scoparia, 中亚滨藜 Atriplex centralasiatica | 虎尾草Chloris virgata, 碱蓬S. glauca, 细叶骆驼蓬Naganum nigellastum, 田旋花Convolvulus arvensis, 稗子草Echinochloa crusgali |
2 | 1306.6 | E 103°35′9.84″,N 39°03′51.62″ | 白茎盐生草H. arachnoideus, 地肤K. scoparia, 中亚滨藜A. centralasiatica | 油蒿Artemisia ordosica, 针茅Stipa capillata, 狗娃花Heteropappus hispidus, 猪毛蒿Artemisia scoparia, 白草Pennisetum centrasiaticum |
8 | 1305.0 | E 103°36′8.92″,N 39°03′25.13″ | 小果白刺N. sibirica, 黑果枸杞Lycium ruthenicum | 中亚滨藜 A. centralasiatica, 地肤K. scoparia, 红砂R. songarica, 枸杞Lycium chinense, 芦苇Phragmites australis |
13 | 1306.4 | E 103°36′18.18″,N 39°02′30.29″ | 黑果枸杞L. ruthenicum | 腺独行菜Lepidium apetalum, 画眉草Eragrostis pilosa, 小叶碱蓬Suaeda microphylla,黄花补血草Limonium aureum |
20 | 1308.1 | E 103°37′1.85″, N 39°01′44.11″ | 黑果枸杞L. ruthenicum | 中亚滨藜A. centralasiatica, 黄花补血草L. aureum, 小叶碱蓬S. microphylla, 盐爪爪K. foliatum, 地锦Parthenocissus tricuspidata |
Table 1 General situation of different abandoned land samples
退耕年限Abandoned years (yr) | 海拔 Altitude (m) | 经纬度 Longitude/latitude | 群落优势种 Dominant plants species | 伴生种 Accompanying species |
---|---|---|---|---|
0 | 1304.0 | E 103°35′14.01″,N 39°03′52.00″ | 茴香Foeniculum vulgare | 藜Chenopodium album |
1 | 1305.9 | E 103°35′7.29″,N 39°03′57.53″ | 地肤K. scoparia, 中亚滨藜 Atriplex centralasiatica | 虎尾草Chloris virgata, 碱蓬S. glauca, 细叶骆驼蓬Naganum nigellastum, 田旋花Convolvulus arvensis, 稗子草Echinochloa crusgali |
2 | 1306.6 | E 103°35′9.84″,N 39°03′51.62″ | 白茎盐生草H. arachnoideus, 地肤K. scoparia, 中亚滨藜A. centralasiatica | 油蒿Artemisia ordosica, 针茅Stipa capillata, 狗娃花Heteropappus hispidus, 猪毛蒿Artemisia scoparia, 白草Pennisetum centrasiaticum |
8 | 1305.0 | E 103°36′8.92″,N 39°03′25.13″ | 小果白刺N. sibirica, 黑果枸杞Lycium ruthenicum | 中亚滨藜 A. centralasiatica, 地肤K. scoparia, 红砂R. songarica, 枸杞Lycium chinense, 芦苇Phragmites australis |
13 | 1306.4 | E 103°36′18.18″,N 39°02′30.29″ | 黑果枸杞L. ruthenicum | 腺独行菜Lepidium apetalum, 画眉草Eragrostis pilosa, 小叶碱蓬Suaeda microphylla,黄花补血草Limonium aureum |
20 | 1308.1 | E 103°37′1.85″, N 39°01′44.11″ | 黑果枸杞L. ruthenicum | 中亚滨藜A. centralasiatica, 黄花补血草L. aureum, 小叶碱蓬S. microphylla, 盐爪爪K. foliatum, 地锦Parthenocissus tricuspidata |
指标Index | 退耕年限Abandoned years (yr) | |||||
---|---|---|---|---|---|---|
CK | 1 | 2 | 8 | 13 | 20 | |
pH | 8.187±0.160a | 8.080±0.090ab | 7.980±0.147ab | 8.007±0.310ab | 7.983±0.144ab | 7.767±0.046b |
含水率Water content (%) | 0.110±0.010a | 0.078±0.007bc | 0.074±0.003bc | 0.059±0.005c | 0.126±0.031a | 0.103±0.011ab |
砂粒含量Sand content (%) | 72.827±2.473bc | 79.361±10.480ab | 86.090±10.037a | 62.687±2.320c | 62.778±0.395c | 60.927±0.850c |
全氮Total nitrogen (%) | 0.032±0.002ab | 0.024±0.004bc | 0.036±0.002a | 0.022±0.010c | 0.018±0.001c | 0.017±0.002c |
速效钾Available K (mg·kg-1) | 227.586±66.140b | 142.007±21.555b | 159.056±29.197b | 234.332±69.178b | 411.067±60.911a | 199.814±16.465b |
速效磷Available P (mg·kg-1) | 1.397±0.127a | 0.962±0.102bc | 1.036±0.217b | 1.482±0.080a | 0.760±0.139cd | 0.506±0.115d |
Table 2 Physical and chemical characteristics of soil in different abandoned areas
指标Index | 退耕年限Abandoned years (yr) | |||||
---|---|---|---|---|---|---|
CK | 1 | 2 | 8 | 13 | 20 | |
pH | 8.187±0.160a | 8.080±0.090ab | 7.980±0.147ab | 8.007±0.310ab | 7.983±0.144ab | 7.767±0.046b |
含水率Water content (%) | 0.110±0.010a | 0.078±0.007bc | 0.074±0.003bc | 0.059±0.005c | 0.126±0.031a | 0.103±0.011ab |
砂粒含量Sand content (%) | 72.827±2.473bc | 79.361±10.480ab | 86.090±10.037a | 62.687±2.320c | 62.778±0.395c | 60.927±0.850c |
全氮Total nitrogen (%) | 0.032±0.002ab | 0.024±0.004bc | 0.036±0.002a | 0.022±0.010c | 0.018±0.001c | 0.017±0.002c |
速效钾Available K (mg·kg-1) | 227.586±66.140b | 142.007±21.555b | 159.056±29.197b | 234.332±69.178b | 411.067±60.911a | 199.814±16.465b |
速效磷Available P (mg·kg-1) | 1.397±0.127a | 0.962±0.102bc | 1.036±0.217b | 1.482±0.080a | 0.760±0.139cd | 0.506±0.115d |
指标 Index | 退耕年限Abandoned years (yr) | |||||
---|---|---|---|---|---|---|
CK | 1 | 2 | 8 | 13 | 20 | |
土壤微生物量碳Soil microbial biomass C | 124.172±18.595c | 290.156±10.027b | 346.704±62.316b | 300.301±42.133b | 459.287±66.774a | 67.245±1.335c |
土壤微生物量氮 Soil microbial biomass N | 21.335±1.744b | 46.688±3.618ab | 69.513±24.235a | 56.358±28.520ab | 27.824±7.384b | 54.327±23.444ab |
土壤微生物量磷 Soil microbial biomass P | 28.086±9.015b | 37.980±15.046ab | 49.471±6.944a | 8.505±1.057c | 37.231±6.792ab | 9.208±3.381c |
Table 3 Soil microbial biomass characteristics in different abandoned areas (mg·kg-1)
指标 Index | 退耕年限Abandoned years (yr) | |||||
---|---|---|---|---|---|---|
CK | 1 | 2 | 8 | 13 | 20 | |
土壤微生物量碳Soil microbial biomass C | 124.172±18.595c | 290.156±10.027b | 346.704±62.316b | 300.301±42.133b | 459.287±66.774a | 67.245±1.335c |
土壤微生物量氮 Soil microbial biomass N | 21.335±1.744b | 46.688±3.618ab | 69.513±24.235a | 56.358±28.520ab | 27.824±7.384b | 54.327±23.444ab |
土壤微生物量磷 Soil microbial biomass P | 28.086±9.015b | 37.980±15.046ab | 49.471±6.944a | 8.505±1.057c | 37.231±6.792ab | 9.208±3.381c |
指标 Index | 细菌 Bacteria | 放线菌 Actinomycetes | 真菌 Fungi | 土壤微生物量碳 Soil microbial biomass C | 土壤微生物量氮 Soil microbial biomass N | 土壤微生物量磷 Soil microbial biomass P |
---|---|---|---|---|---|---|
pH | 0.727 | 0.835* | 0.785 | 0.155 | -0.517 | 0.375 |
含水率Water content | 0.077 | -0.483 | -0.385 | -0.060 | -0.755 | 0.106 |
砂粒含量Sand content | 0.156 | 0.497 | 0.139 | 0.171 | 0.311 | 0.793 |
全氮Total nitrogen | 0.565 | 0.583 | 0.332 | 0.000 | 0.168 | 0.588 |
速效钾Available K | -0.114 | -0.519 | -0.302 | 0.481 | -0.587 | -0.031 |
速效磷Available P | 0.721 | 0.817* | 0.873* | 0.053 | -0.110 | -0.063 |
Table 4 Correlation analysis between soil physical and chemical properties and soil microbiology characteristics
指标 Index | 细菌 Bacteria | 放线菌 Actinomycetes | 真菌 Fungi | 土壤微生物量碳 Soil microbial biomass C | 土壤微生物量氮 Soil microbial biomass N | 土壤微生物量磷 Soil microbial biomass P |
---|---|---|---|---|---|---|
pH | 0.727 | 0.835* | 0.785 | 0.155 | -0.517 | 0.375 |
含水率Water content | 0.077 | -0.483 | -0.385 | -0.060 | -0.755 | 0.106 |
砂粒含量Sand content | 0.156 | 0.497 | 0.139 | 0.171 | 0.311 | 0.793 |
全氮Total nitrogen | 0.565 | 0.583 | 0.332 | 0.000 | 0.168 | 0.588 |
速效钾Available K | -0.114 | -0.519 | -0.302 | 0.481 | -0.587 | -0.031 |
速效磷Available P | 0.721 | 0.817* | 0.873* | 0.053 | -0.110 | -0.063 |
退耕年限 Abandoned years (yr) | 因子得分 Factor score | 综合得分 General sores | 名次 Ranking | |||
---|---|---|---|---|---|---|
因子1 Factor1 | 因子2 Factor 2 | 因子3 Factor 3 | 因子4 Factor 4 | |||
0 | 1.27819 | 0.38516 | 1.14979 | -0.97063 | 0.7571 | 1 |
1 | 0.20669 | 0.50839 | -0.46577 | 0.09878 | 0.1304 | 2 |
2 | -0.43713 | 1.48493 | -0.84288 | 0.23228 | 0.0281 | 4 |
8 | 0.95950 | -1.27734 | -1.03027 | 0.56685 | -0.0296 | 5 |
13 | -0.68958 | -0.27640 | 1.29532 | 1.39102 | 0.0322 | 3 |
20 | -1.31768 | -0.82473 | -0.10619 | -1.31830 | -0.9183 | 6 |
Table 5 Prediction and evaluation of soil fertility in different abandoned areas
退耕年限 Abandoned years (yr) | 因子得分 Factor score | 综合得分 General sores | 名次 Ranking | |||
---|---|---|---|---|---|---|
因子1 Factor1 | 因子2 Factor 2 | 因子3 Factor 3 | 因子4 Factor 4 | |||
0 | 1.27819 | 0.38516 | 1.14979 | -0.97063 | 0.7571 | 1 |
1 | 0.20669 | 0.50839 | -0.46577 | 0.09878 | 0.1304 | 2 |
2 | -0.43713 | 1.48493 | -0.84288 | 0.23228 | 0.0281 | 4 |
8 | 0.95950 | -1.27734 | -1.03027 | 0.56685 | -0.0296 | 5 |
13 | -0.68958 | -0.27640 | 1.29532 | 1.39102 | 0.0322 | 3 |
20 | -1.31768 | -0.82473 | -0.10619 | -1.31830 | -0.9183 | 6 |
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