[1]LI Juan,HAN Jichang,CHEN Chao,et al.Effects of Different Land Use Patterns on Characteristics of Soil Aggregates Under Vacancy Village Renovation in Hilly Areas[J].Research of Soil and Water Conservation,2017,24(04):174-181.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 04
Page number:
174-181
Column:
Public date:
2017-08-28
- Title:
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Effects of Different Land Use Patterns on Characteristics of Soil Aggregates Under Vacancy Village Renovation in Hilly Areas
- Author(s):
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LI Juan1,2,3, HAN Jichang1,3, CHEN Chao1,3, LI Jinbin1,3
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1. Shaanxi Province Land Engineering Construction Group, Xi’an 710075, China;
2. College of Forestry, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Land and Resources of China, Xi’an 710075, China
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- Keywords:
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vacancy village; soil aggregate; mean weight diameters (MWD); geometric mean diameter (GMD); fractal dimension
- CLC:
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S157.4;S512.11
- DOI:
-
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- Abstract:
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To reveal the influence of the different ways of land use on soil aggregate, return the vacancy village renovation to improve the hilly area of soil stability and provide a scientific basis for production performance. After vacancy village renovation in hilly area of Chengcheng County in Shaanxi Province, five different ways of land use were set up, a period of one year of planting experiment, of corn (C), wheat (W), vegetables (V), medicinal herbs (M) and control (CK treatment) was conducted. Wet sieve method and dry sieve of 0—40 cm soil layer soil aggregate distribution, average quality diameter (WMD) and geometric mean diameter (GMD), aggregate damage rate (PAD), the number of unstable crumb (ELT) and fractal dimension (D) were analyzed. The results showed that: (1) soil aggregate quantity and size in each processing in 0—40 cm soil layer were significantly better than those of CK treatment, dry sieve > 0.25 mm (DR0.25) and wet-screened aggregate content (WR0.25) with the increase of soil depth in 0—40 cm soil layer under various processing presented opposite trends; (2) soil mean weight diameters (MWD) and geometric mean diameters (GMD) measured by dry sieve and wet sieve method sin 0—40 cm soil layer of each treatment decreased in the order: W > C > M > V > CK, C treatment was conducive to increasing the aggregate content of surface soil, W treatment helps to increase the lower soil aggregate content; (3) wet sieve analysis showed that the soil aggregate unstable failure rate (PAD) and aggregate index (ELT) in 0—40 cm soil layer under each treatment showed ‘Z’ shape, each treatment was significantly lower than CK; (4) average fractal dimension (D) in 0—40 cm soil layer of each treatment increased in the order: C < W < M < V < CK. there is a good linear relationship between soil fractal dimension (D) and > 0.25 mm aggregate contents determined by dry sieve method and wet sieve method in 0—40 cm soil layer, R2 = 0.74 and R2 = 0.67, respectively. Growing corn and wheat could improve soil aggregate content, increase soil stability, and improve soil structure in 0—40 cm soil layer after the vacancy village renovation.