退耕植被演替过程中土壤团聚体与胶结物质的协同响应

来源 :西南林业大学学报(自然科学) | 被引量 : 5次 | 上传用户:smallfishyl
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
以陕西王茂沟流域为研究区,进行野外调查取样和测定,采用方差分析和相关性分析,研究了黄土丘陵区退耕植被演替过程中土壤团聚体稳定性与团聚体胶结物质间的协同响应关系。结果表明:退耕植被演替显著提高了>5 mm粒径团聚体的百分含量,降低了0.25~2 mm粒径团聚体的百分含量,显著增大了团聚体MWD。不同粒级团聚体SOC、EE-GRSP和T-GRSP含量均随植被演替呈现不同程度增加趋势,其稳定性的改善主要取决于>5 mm粒径团聚体SOC和<5 mm各粒径团聚体T-GRSP含量的提高。黄土丘陵区退耕植被演替过
其他文献
【正】 Excitation functions are measured for the products of <sup>55</sup>Co,<sup>56</sup>Co,<sup>57</sup>Co,<sup>58</sup>Co,<sub>52</sub>Mn and <sup>54</sup>Mn
This machine tool is produced by theQinchuan Machine Tool Works. It isused mainly for grinding cycloid gearsin the cycloidal speed reducer. The toothflank of th
期刊
The Xinxing Electronics Group was jointly established by several stateowned electronic enterprises lacking in technical base in Zibo, Shandong Province, in 1994
期刊
<正> 宽带骨干网的建设尚未尘埃落定,接入网和城域网之间的争斗又起烽烟。除了如长城宽带、北京蓝波等企业外,中国电信、中国网通等运骨干网的建设者也越来越多的加入到了骨
Situated on China’s eastern coast, Shandong Province is an important opening coastal province. Over the past 15 years, average gross product in the province in
如今,手机越来越成为市民不可缺少的通讯工具。但商务一族、传媒人员、机关人员等不少每天都要长时间接打电话的人,却因此诱发耳鸣甚至耳聋、听神经瘤等耳疾。北京三博复兴脑
To meet the requirements of a socialist market economy and overcome the inherent sharp contradictions of the former taxation system, China began reforming the s
期刊
相关领域的技术专家、著名IT企业首脑和技术精英等共聚、研讨“下一代网络”相关技术、应用以及服务,希望籍此使得中国IT相关企业,能够通过充分交流来辨析正在发生的历史变革
Zhangjiakou, a famous and historical, city in northwest Hebei Province, borders Beijing and Chengde in the east, Baoding in the south. Shanxi Province in the we
期刊
Harbin is the largest city in Northeast China, an economic centre of Northeast Asia with great potential. It is the hub of the Eurasia Continental Bridge and ai