Nebkha morphological characteristics and soil nutrition content in three regions with different climates in North China

doi:10.7522/j.issn.1000-694X.2020.00133

Journal of Desert Research ›› 2021, Vol. 41 ›› Issue (2): 191-199.DOI: 10.7522/j.issn.1000-694X.2020.00133

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Nebkha morphological characteristics and soil nutrition content in three regions with different climates in North China

Weicheng Luo(), Wenzhi Zhao(), Heng Ren, Bing Liu

Linze Inland River Basin Research Station / Key Laboratory of Ecohydrology of Inland River Basin，Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，China

Received:2020-09-15 Revised:2020-12-30 Online:2021-03-20 Published:2021-03-26
Contact: Wenzhi Zhao

Abstract

Abstract:

Nebkhas， or vegetated sand dunes， are a common landscape in the transitional zone of oasis and desert in arid and semi-arid regions. And， nebkhas are critical in preventing desertification and biodiversity protection of oasis. This paper studied the differences of nebkhas morphology characteristics and soil nutrition content among three types of nebkhas （Tamarix chinensis， Nitraria sphaerocarpa and Caragana korshinskii） which from different regions. The results are as follows： The height， area and volume of T. chinensis nebkha were significantly higher than N. sphaerocarpa and C. korshinskii nebkhas. And the height， area and volume of N. sphaerocarpa nebkha were the smallest. The existence of both three types of shrubs were significantly increased soil organic matter， and made nebkhas into “fertile island”. Soil organic matter， total carbon， total nitrogen and total phosphorus of T. chinensis nebkha were all significantly higher than N. sphaerocarpa and C. korshinskii nebkhas. The mainly reason was that soil litter content of T. chinensis nebkha was the highest， and the growth habitof T. chinensis are vertical， dense， and multi-branching. Thus， theinterception and accumulation capability of T. chinensis nebkha is stronger than N. sphaerocarpa and C. korshinskii. In addition， the differences of sand source and meteorological condition among different regions may also lead to the differences of morphological characteristics and soil nutrition content of nebkhas.

Key words: nebkhas, shrub feature, nebkha morphology, soil nutrition content

CLC Number:

S158.3

Weicheng Luo, Wenzhi Zhao, Heng Ren, Bing Liu. Nebkha morphological characteristics and soil nutrition content in three regions with different climates in North China[J]. Journal of Desert Research, 2021, 41(2): 191-199.

Figures/Tables 7

References 43

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研究区域	灌丛类型	地理位置	纬度	经度	年降水量/mm	主要干扰
额济纳旗荒漠区	柽柳	巴丹吉林沙漠西缘	42°03′20.77″N	101°14′47.87″E	35	放牧、人工植被建设
临泽县荒漠绿洲区	泡泡刺	巴丹吉林沙漠西南缘	39°24′7.65″N	100°10′58.53″E	110	放牧、人工植被建设
松锦旗周边荒漠区	柠条锦鸡儿	库布齐沙漠东北缘	40°44′42.73″N	108°32′37.67″E	258	放牧

研究区域	灌丛类型	地理位置	纬度	经度	年降水量/mm	主要干扰
额济纳旗荒漠区	柽柳	巴丹吉林沙漠西缘	42°03′20.77″N	101°14′47.87″E	35	放牧、人工植被建设
临泽县荒漠绿洲区	泡泡刺	巴丹吉林沙漠西南缘	39°24′7.65″N	100°10′58.53″E	110	放牧、人工植被建设
松锦旗周边荒漠区	柠条锦鸡儿	库布齐沙漠东北缘	40°44′42.73″N	108°32′37.67″E	258	放牧

形态参数	柽柳	泡泡刺	柠条锦鸡儿
高度/m	2.05±0.93^a	1.57±0.08^b	1.33±0.21^b
长度/m	9.15±0.56^a	6.35±0.41^b	6.70±0.88^b
宽度/m	9.40±0.68^a	4.62±0.41^b	7.18±0.76^c
面积/m²	70.53±9.76^a	24.07±3.68^b	43.02±8.88^c
体积/m³	98.72±15.40^a	24.69±3.21^b	45.54±12.36^c
物种丰富度	4.17±0.48^a	2.33±0.42^b	6.75±0.53^c

形态参数	柽柳	泡泡刺	柠条锦鸡儿
高度/m	2.05±0.93^a	1.57±0.08^b	1.33±0.21^b
长度/m	9.15±0.56^a	6.35±0.41^b	6.70±0.88^b
宽度/m	9.40±0.68^a	4.62±0.41^b	7.18±0.76^c
面积/m²	70.53±9.76^a	24.07±3.68^b	43.02±8.88^c
体积/m³	98.72±15.40^a	24.69±3.21^b	45.54±12.36^c
物种丰富度	4.17±0.48^a	2.33±0.42^b	6.75±0.53^c

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Nebkha morphological characteristics and soil nutrition content in three regions with different climates in North China

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