Effect of Sand Burial Conditions and Water Conditions on Soil Seed Bank Under Closing Measures in Mountainous Region of North Hebei(PDF)
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
- Issue:
- 2016年03
- Page:
- 163-169
- Research Field:
- Publishing date:
Info
- Title:
- Effect of Sand Burial Conditions and Water Conditions on Soil Seed Bank Under Closing Measures in Mountainous Region of North Hebei
- Author(s):
- CHEN Ying1; 2; ZHU Kai1; LIU Lin3; XU Xuehua1; LI Yuling1
- （1.College of Foresty，Agricultural University of Hebei，Baoding，Hebei 071000；2.Langfang Water Supplies Bureau，Langfang，Hebei 065000；3.Luquan Branch of China Construction Bank，Luquan，Hebei 050200）
- Keywords:
- soil seed bank; water condition; sand burial condition; closing measures
- PACS:
- -
- DOI:
- 10.11937/bfyy.201603046
- Abstract:
- Blown-sand activity，soil drought and human disturbance are the main factors limiting the vagetation natural restoration of northern of Hebei sandy wasteland.In this paper，we compared the species composition and diversity of soil seed banks and studied the similarity between ground vegetation and soil seed banks at closed and unclosed mountainous region in north of Hebei，the natural reserve was used as control group.We combined field sampling with indoor seed germination test，and studied the moisture conditions of drought(D)，well water(W) and water (WL) and buried depth of 0.5 cm and 2.0 cm.The results showed that：W had the most species,the highest Shannon-Wiener index and Margalef index in both closed and unclosed regions.Natural reserve had higher species diversity index and more species than the other two regions under all water conditions.It indicated that water was the major limiting factor for soil seed bank germination in degraded sandy wasteland and closing measure had little influence on the germination of nature reserve.Species number and species composition were the same under both burial depths in both closed and unclosed regions.0.5 cm sand burial depth had significantly more species than 2.0 cm sand burial depth in natural reserve，and the majority plant species in natural reserve were perennial herbaceous plants，most of which were dicotyledons，shrubs were found occasionally.Neither shrubs nor woody plants were found in both closed and unclosed regions，indicating that sand burial condition had more influence on seed species diversity of soil seed banks in both closed and unclosed regions，and had less influence in natural reserve.The order of Sorensen similarity index in closed region and nature reserve were：W＞D＞WL，while unclosed region with W showed the lowest similarity with ground vegetation.Indicating that water condition had a greater influence on the similarity between seed bank and ground vegetation in closed region and nature reserve，and less influence in unclosed region.The Sorensen similarity index was low under all burial conditions，indicating that the species composition of soil seed bank and ground vegetation had a big difference and sand burial condition had a great influence on the Sorensen similarity index.Closed region had higher species diversity than unclosed region under W，indicating that the closing measure could improve species diversity when water condition was well；Sorensen similarity index of closed region，unclosed region and natural reserve were low under all water conditions，indicating that closing measure had little influence on the relationship between the species numbers of soil seed bank and ground vegetation.
Last Update: 2016-04-16