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[1]ZHANG Mingzhong,HE Guangxiong,FANG Haidong,et al.Effects of Dominant Native Grasses Constructed Communities on Soil and Water Conservation in Dry-Hot Valley of Yuanmou[J].Research of Soil and Water Conservation,2017,24(02):101-104.

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Effects of Dominant Native Grasses Constructed Communities on Soil and Water Conservation in Dry-Hot Valley of Yuanmou

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 02 Page number: 101-104 Column: Public date: 2017-04-28

Title:: Effects of Dominant Native Grasses Constructed Communities on Soil and Water Conservation in Dry-Hot Valley of Yuanmou

Author(s):: ZHANG Mingzhong¹, HE Guangxiong¹, FANG Haidong¹, XIONG Donghong², RAN Lin³, ZHANG Baojun², SHI Liangtao¹; 1. Institute of Tropical Eco-Agricultural sciences, Yunnan Academy of Agriculture Sciences, Yuanmou, Yunnan 651300, China;
2. Institute of Mountain Hazards and Environment, China Academy of Sciences and Ministry of Water Resources, Chengdu 610041, China;
3. Soil and Water Conservation Office Committee of Yuanmou county, Yuanmou, Yunnan 651300, China

Keywords:: dry-hot valley; native grass; soil erosion modulus; runoff generation; soil and water conservation

CLC:: S157.2

DOI:: -

Abstract:: Dominant native grasses were assembled for constructing communities in different slope runoff monitoring sites, and their effects and efficiencies on water and soil loss were examined under Yuanmou dry-hot valley conditions. The observation results from 2013 to 2015 showed that runoff generations and soil erosion modulus were positively correlated with rainfall(p < 0.05); soil and water losses were significantly different between constructed native grasses community sites and CK sites, runoff generations and soil erosion modulus increased with the rise of slope gradients across all communities and CK sites; in contract, water utilization efficiencies of constructed native grass communities reduced with the increase of site slope gradients, and rose with increase of community coverage. The above results suggested that planted native grass communities significantly reduced water and soil loss and improved the reutilization of rainfall, and the reduction of soil and water loss was more obvious with the increase of slope gradient, which reveled that it could be more efficient when those communities were built in steep sloping lands in hilly.

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