{"id":79056,"date":"2026-02-28T21:41:07","date_gmt":"2026-02-28T13:41:07","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/79056.html"},"modified":"2026-02-28T21:41:07","modified_gmt":"2026-02-28T13:41:07","slug":"r%e8%af%ad%e8%a8%80%e4%b8%ad%e5%a6%82%e4%bd%95%e8%ae%a1%e7%ae%97%e5%8a%9f%e8%83%bd%e5%a4%9a%e6%a0%b7%e6%80%a7%e6%8c%87%e6%95%b0%ef%bc%88%e5%90%ab%e6%95%b0%e6%8d%ae%e6%a0%bc%e5%bc%8f%e6%95%b4%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/79056.html","title":{"rendered":"R\u8bed\u8a00\u4e2d\u5982\u4f55\u8ba1\u7b97\u529f\u80fd\u591a\u6837\u6027\u6307\u6570\uff08\u542b\u6570\u636e\u683c\u5f0f\u6574\u7406\uff09"},"content":{"rendered":"<p>\u4eca\u5929\u9047\u5230\u6709\u4eba\u54a8\u8be2FAD(Functional attribute diversity)\u5e94\u8be5\u600e\u4e48\u8ba1\u7b97&#xff0c;\u8bf4\u5728\u7f51\u4e0a\u67e5\u4e0d\u5230\u76f8\u5173\u8d44\u6599\u3002\u8fd9\u4e2a\u6307\u6570\u662fWalkeret et al.\u57281999\u5e74\u63d0\u51fa\u7684&#xff0c;\u5b83\u7684\u5b9a\u4e49\u4e5f\u975e\u5e38\u7b80\u5355&#xff1a; <span class=\"katex--display\"><span class=\"katex-display\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         F<\/p>\n<p>         A<\/p>\n<p>         D<\/p>\n<p>         &#061;<\/p>\n<p>          \u2211<\/p>\n<p>          i<\/p>\n<p>          S<\/p>\n<p>          \u2211<\/p>\n<p>          j<\/p>\n<p>          S<\/p>\n<p>          d<\/p>\n<p>           i<\/p>\n<p>           j<\/p>\n<p>         FAD&#061;\u2211_i^S\u2211_j^Sd_{ij } <\/p>\n<p>     <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6833em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.1389em\">F<\/span><span class=\"mord mathnormal\">A<\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0278em\">D<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><span class=\"mrel\">&#061;<\/span><span class=\"mspace\" style=\"margin-right: 0.2778em\"><\/span><\/span><span class=\"base\"><span class=\"strut\" style=\"height: 3.2421em;vertical-align: -1.4138em\"><\/span><span class=\"mop op-limits\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.8283em\"><span class=\"\" style=\"top: -1.8723em;margin-left: 0em\"><span class=\"pstrut\" style=\"height: 3.05em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\">i<\/span><\/span><\/span><span class=\"\" style=\"top: -3.05em\"><span class=\"pstrut\" style=\"height: 3.05em\"><\/span><span class=\"\"><span class=\"mop op-symbol large-op\">\u2211<\/span><\/span><\/span><span class=\"\" style=\"top: -4.3em;margin-left: 0em\"><span class=\"pstrut\" style=\"height: 3.05em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0576em\">S<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.2777em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mop op-limits\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.8283em\"><span class=\"\" style=\"top: -1.8723em;margin-left: 0em\"><span class=\"pstrut\" style=\"height: 3.05em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0572em\">j<\/span><\/span><\/span><span class=\"\" style=\"top: -3.05em\"><span class=\"pstrut\" style=\"height: 3.05em\"><\/span><span class=\"\"><span class=\"mop op-symbol large-op\">\u2211<\/span><\/span><\/span><span class=\"\" style=\"top: -4.3em;margin-left: 0em\"><span class=\"pstrut\" style=\"height: 3.05em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0576em\">S<\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 1.4138em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><span class=\"mspace\" style=\"margin-right: 0.1667em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\">d<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: 0em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0572em\">ij<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.2861em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span> \u5176\u4e2d<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>         d<\/p>\n<p>          i<\/p>\n<p>          j<\/p>\n<p>       d_{ij }<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.9805em;vertical-align: -0.2861em\"><\/span><span class=\"mord\"><span class=\"mord mathnormal\">d<\/span><span class=\"msupsub\"><span class=\"vlist-t vlist-t2\"><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.3117em\"><span class=\"\" style=\"top: -2.55em;margin-left: 0em;margin-right: 0.05em\"><span class=\"pstrut\" style=\"height: 2.7em\"><\/span><span class=\"sizing reset-size6 size3 mtight\"><span class=\"mord mtight\"><span class=\"mord mathnormal mtight\" style=\"margin-right: 0.0572em\">ij<\/span><\/span><\/span><\/span><\/span><span class=\"vlist-s\">\u200b<\/span><\/span><span class=\"vlist-r\"><span class=\"vlist\" style=\"height: 0.2861em\"><span class=\"\"><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u662f\u7269\u79cd<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        i<\/p>\n<p>       i<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.6595em\"><\/span><span class=\"mord mathnormal\">i<\/span><\/span><\/span><\/span><\/span>\u4e0e\u7269\u79cd<span class=\"katex--inline\"><span class=\"katex\"><span class=\"katex-mathml\"><\/p>\n<p>        j<\/p>\n<p>       j<\/p>\n<p>    <\/span><span class=\"katex-html\"><span class=\"base\"><span class=\"strut\" style=\"height: 0.854em;vertical-align: -0.1944em\"><\/span><span class=\"mord mathnormal\" style=\"margin-right: 0.0572em\">j<\/span><\/span><\/span><\/span><\/span>\u4e4b\u95f4\u7684\u529f\u80fd\u8ddd\u79bb\u3002\u7b80\u5355\u6765\u8bf4FAD\u5c31\u662f\u6240\u6709\u7269\u79cd\u961f\u4e4b\u95f4\u529f\u80fd\u8ddd\u79bb\u7684\u603b\u548c\u3002<\/p>\n<p>\u5728R\u4e2d\u7684\u8ba1\u7b97\u4e5f\u5341\u5206\u7b80\u5355&#xff0c;sum(dist(data))\u5c31\u53ef\u4ee5\u76f4\u63a5\u5f97\u51fa\u7ed3\u679c\u3002 \u8fd9\u4e2a\u6307\u6807\u4e0d\u4f1a\u8bb2\u7269\u79cd\u591a\u5ea6\u8003\u8651\u8fdb\u6765&#xff0c;\u6240\u4ee5\u5df2\u7ecf\u4e0d\u600e\u4e48\u5355\u62ce\u51fa\u6765\u7528\u4e86\u3002<\/p>\n<p>\u4e0b\u9762\u7ed3\u5408\u5176\u4ed6\u7684\u529f\u80fd\u591a\u6837\u6027\u6307\u6570\u8bb2\u4e00\u8bb2\u5728R\u4e2d\u5982\u4f55\u8ba1\u7b97\u529f\u80fd\u591a\u6837\u6027\u6307\u6570\u4ee5\u53ca\u6570\u636e\u5e94\u8be5\u6574\u7406\u6210\u4ec0\u4e48\u6837\u7684\u683c\u5f0f\u3002<\/p>\n<p>\u9996\u5148\u662f\u6570\u636e\u7684\u6574\u7406&#xff0c;\u6211\u4eec\u9700\u8981\u4e24\u7ec4\u6570\u636e&#xff0c;\u4e00\u7ec4\u662f\u529f\u80fd\u6027\u72b6&#xff0c;\u4e00\u7ec4\u662f\u7fa4\u843d\u7269\u79cd\u591a\u5ea6\u6570\u636e\u3002 \u529f\u80fd\u6027\u72b6\u6574\u7406\u6210\u884c\u662f\u7269\u79cd&#xff0c;\u5217\u662f\u529f\u80fd\u6027\u72b6&#xff0c;\u6570\u503c\u4e3a\u539f\u59cb\u6d4b\u91cf\u503c\u7684\u683c\u5f0f<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260228134106-69a2f07268988.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" width=\"250\" height=\"100\" \/> \u7fa4\u843d\u6570\u636e\u6574\u7406\u6210\u884c\u662f\u6837\u65b9&#xff0c;\u5217\u662f\u7269\u79cd&#xff0c;\u6570\u503c\u4e3a\u591a\u5ea6\u7684\u683c\u5f0f\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260228134106-69a2f07280120.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" width=\"300\" height=\"100\" \/><\/p>\n<p>\u968f\u540e\u5c06\u6570\u636e\u5bfc\u5165R\u4e2d<\/p>\n<p>com<span class=\"token operator\">&lt;-<\/span>read.csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;site-sp-abundance.csv&#034;<\/span><span class=\"token punctuation\">,<\/span>header <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">TRUE<\/span><span class=\"token punctuation\">,<\/span>row.names<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>trait<span class=\"token operator\">&lt;-<\/span>read.csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;trait.csv&#034;<\/span><span class=\"token punctuation\">,<\/span>header <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">TRUE<\/span><span class=\"token punctuation\">,<\/span>row.names <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>FAD\u7684\u8ba1\u7b97\u4e3a&#xff1a;<\/p>\n<p>FAD<span class=\"token operator\">&lt;-<\/span>sum<span class=\"token punctuation\">(<\/span>dist<span class=\"token punctuation\">(<\/span>trait<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u5982\u679c\u6027\u72b6\u6570\u636e\u6709\u5206\u7c7b\u53d8\u91cf&#xff0c;\u4e00\u5b9a\u8981\u63d0\u524d\u7528\u6570\u503c\u4ee3\u66ff\u5206\u7c7b\u6307\u6807\u3002<\/p>\n<p>\u529f\u80fd\u591a\u6837\u6027\u7684\u8ba1\u7b97\u901a\u8fc7FD\u5305\u5b8c\u6210\u3002<\/p>\n<p>\u6211\u4eec\u4f7f\u7528FD\u5305\u4e2d\u7684dbFD\u51fd\u6570\u7ed3\u5408\u7269\u79cd\u7684\u591a\u5ea6\u8ba1\u7b97\u529f\u80fd\u591a\u6837\u6027\u4e30\u5bcc\u5ea6&#xff08;Functional Richness, FRic&#xff09;&#xff0c;\u529f\u80fd\u591a\u6837\u6027\u5747\u5300\u5ea6&#xff08;Functional Evenness,FEve&#xff09;\u4ee5\u53ca\u529f\u80fd\u5206\u5f02\u5ea6&#xff08;Functional Divergence,FDiv&#xff09;\u4ee5\u53ca\u529f\u80fd\u79bb\u6563\u5ea6&#xff08;Rao\u2019s Quadratic Entropy,RaoQ&#xff09;\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260228134106-69a2f07294cba.png\" alt=\"dbFD\u51fd\u6570\u4ecb\u7ecd\" \/><\/p>\n<p>\u5728R\u4e2d\u8fd0\u884cdbFD\u51fd\u6570&#xff0c;\u5373\u53ef\u83b7\u5f97\u4ee5\u4e0a\u529f\u80fd\u591a\u6837\u6027\u6307\u6807<\/p>\n<p>library<span class=\"token punctuation\">(<\/span>FD<span class=\"token punctuation\">)<\/span><br \/>\ndbfd_result <span class=\"token operator\">&lt;-<\/span> dbFD<span class=\"token punctuation\">(<\/span>trait<span class=\"token punctuation\">,<\/span>com<span class=\"token punctuation\">)<\/span><br \/>\nwrite.csv<span class=\"token punctuation\">(<\/span>dbfd_result<span class=\"token punctuation\">,<\/span><span class=\"token string\">&#034;dbfd_result.csv&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u5929\u9047\u5230\u6709\u4eba\u54a8\u8be2FAD(Functional attribute diversity)\u5e94\u8be5\u600e\u4e48\u8ba1\u7b97&#xff0c;\u8bf4\u5728\u7f51\u4e0a\u67e5\u4e0d\u5230\u76f8\u5173\u8d44\u6599\u3002\u8fd9\u4e2a\u6307\u6570\u662fWalkeret et al.\u57281999\u5e74\u63d0\u51fa\u7684&#xff0c;\u5b83\u7684\u5b9a\u4e49\u4e5f\u975e\u5e38\u7b80\u5355&#xff1a; FAD\u2211iS\u2211jSdijFAD\u2211_i^S\u2211_j^Sd_{ij } FADi\u2211S\u200bj\u2211S\u200bdij\u200b \u5176\u4e2ddijd_{ij }dij\u200b\u662f\u7269\u79cdiii\u4e0e\u7269\u79cdjjj\u4e4b\u95f4\u7684\u529f\u80fd\u8ddd\u79bb\u3002\u7b80\u5355\u6765\u8bf4FAD\u5c31\u662f\u6240\u6709\u7269\u79cd\u961f\u4e4b\u95f4\u529f\u80fd\u8ddd\u79bb\u7684\u603b\u548c\u3002<br \/>\n\u5728R\u4e2d\u7684\u8ba1<\/p>\n","protected":false},"author":2,"featured_media":79053,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[799,190],"topic":[],"class_list":["post-79056","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-r","tag-190"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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